Since 1922, more than 2300 varieties of cultivated rice were widely colleected in the rice growing countries in the world. They were grown on the field of the Experimental Farm of the Kyushu Imperial University under the managements of the Plant Breeding Institute. Although many of the tropical or subtropical varieties were unable to produce seeds on account of the unfavorable climatoligical conditions, pedigree cultures of more than 1000 varieties have been carried on every year. During the three successive seasons from 1938 to 1940, observations were made with 1089 varieties on the distribution of pigments in the plant, and the results obtained are presented in this paper.
The varieties were classified into four main types by the colour tone, that is colourless or green type, red coloured type, purple coloured type and the other miscellaneous coloured type. The number of varieties belonging to each type respectively amounted to 749, 160, 146, and 43.
Three coloured types excepting the first were then subdivided into classes according to the coloured parts or the mode of the distribution of colour. Thus the red type were divided into 17, the purple type into 40 and the last type into 5 classes.
Grouping into nonglutinous, glutinous and mutant varieties, the number of varieties belonging to each classes was summarised for each countries.
The author discussed on the occurence of such special classes as found in particular countries and the common ones of wide distribution from the standpoint of the geographical differentiation of the cultivated rice varieties.

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1. In this report two subtypes of succinea, succinea-7 (Figs. 1-5) and succinea-8 (Figs. 6-8), and three subtypes of axyridis, axyridis-4 (Figs. 9-11), axyridis-5 (Figs. 12-14) and axyridis-6 (Figs. 15, 16), are dealt with. Each of these subtypes is due to a factor (p⁷=factor for succinea-7, p⁸=factor for succinea-8, P^A-4=factor for axyridis-4, P^A-5=factor for axuridis-5 and P^A-6=factor for axyridis- 6) belonging to the same allelomorphic series as conspicua (P^C), gutta (P^G), distincta (P^D), transversifascia (P^T), spectabilis (P^S), rostrata (P^R), axyridis-1 (P^A-1), axuridis-2 (P^A-2), axyridis-3 (P^A-3), forficula (P^F), aulica-1 (P^Au-1), aulica-2 (P^Au-2), succinea-1 (p¹), succinea-2 (p²), succinea-3 (p³), succinea-4 (p⁴), succinea-5 (p⁵) and succinea-6 (p⁶).
2. The homozygoue of succinea-8 is missing. This gene apparently has a lethal effect in the homozygous state, or else it is closely linked with a lethal gene.
3. Eight subtypes can be distinguished among succinea, which are characterized by the mode of appearance, disappearance or confluence of individual spots.
4. Six subtypes can be distinguished among axyridis bred at 30°C; they are characterized by the configuration of individual orange spots.

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Es sind bisher nur sehr wenige zytologische Untersuchungen über die Vorgänge der Bastardbefruchtung bei Urodelen bekannt und die Kenntnisse darüber bleiben somit noch lückenhaft, was mich veranlasste, meine eigenen diesbezüglichen Befunde mitzuteilen.
Die Befruchtung und die Kernteilung der früheren Furchungsstadien der mit Pseudosalamandra (=Hynobius) kimurai-Spermien besamten Eier von Hynobius nebulosus fanden im Wasser von 12.5°-15°C statt, wobei die zweite, Richtungszelle etwa 2 Stunden nach der künstlichen Besamung ausgestossen wurde.
Ein oder mehrere Samenfäden pflegten an beliebigen Stellen eines Eies durch die Dotterhaut hindurch einzudringen. Etwa 3/4 Stunden nach der Besamung konnte man schon mit unbewaffnetem Auge an der Oberfläche des Eies punktförmige Eintrittsstellen der Samenfäden beobachten. Mikroskopisch stellte man fest, dass an diesen Stellen sofort nach dem Eindringen des Samenfadens eine trichterförmige Eiplasmaansammlung, “Empfängniskegel”. entstanden ist. Ungefähr 1 Stunde nach der Besamung drang der ganze Samenfaden ins Ei hinein, und sein Kopf begann 3-4 Stunden nach der Besamung sich in einen Samenkern umzuwandeln.
Während der weiteren 3 Stunden wanderten der männliche und der weibliche Vorkern bereits eine beträchtliche Strecke gegen das Eizentrum hin und wiesen dabei auch ein ganz bedeutendes Wachstum auf. der Weg, auf dem der männliche Vorkern dem weiblichen entgegen voreilte, war durch einen Streifen von Pigmentgranula gekennzeichnet.
Es gelang mir nicht, die beiden Vorkerne durch ihr Aussehen von einander zu unterscheiden, denn sie waren immer fast gleich gross (Diameter von etwa 0.045mm), gleich stark gefärbt und auch in ihrer Struktur vollkommen unterschiedlos.
Etwa 7 Stunden nach der Besamung waren die beiden Vorkerne um etwa 1/9-3/9 des Eiradius ins Eiinnere vorgedrungen und es erfolgte dort die Kopulation der beiden Vorkerne. Es entstand dadurch zwar ein vollkommen einheitlicher Furchungskern; eine Verschmelzung der väterlichen und der mütterlichen Kernsubstanz kam jedoch während 3-4 Stunden noch nicht zustande, weil die Kernmembran der beiden Vorkerne noch bis zur Ausbildung der Furchungsspindel ungelöst zurückgeblieben war. 11 Stunden nach der Besamung begann die Teilung des Furchungskerns, und erst 4 Stunden später wurde die erste Furche sichtbar.
In der Periode der 1.-3. Furchung war noch die Selbständigkeit der väterlichen und mütterlichen Vorkernelemente in den Furchungskernen deutlich nachzuweisen, wie Smith (1919) an Cryptobranchus allegheniensis und Makino (1934) an Hynobius retardatus beobachtet haben.
Bei den Mitosen der früheren Furchungen wurde die öfteren zu beobachtende Ausschaltung einzelener Kern- und Chromosomenbestandteile von mir nicht beobachtet, sondern die Karyogamie erfolgte bei dieser Artbastardierung genau so wie bei der Nichtartbastardierung, d. h. die beiden artfremden Chromosomengruppen konnten sich bei der Kernteilung normal in koordinierter Weise verhalten.

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Seven strains of Trichogramma, coming from different localities, were reared on eggs of Ephestia cartella, and their genetical behaviours were studied. The followings are the summary of our experiments.
1. Of the seven strains used, three were dark brown, two brown and two were pale yellow. Virgin females of all these strains produced males parthenogenetically.
2. The chromosomes are 10 in female and 5 in male, without any distinction either in number or in shape according to strains. One diploid male were observed in the IS (yellow) strain.
3. Cross breeding between the same colour strains was possible in any combination.
4. No cross between different colour strains was possible, except the one between IS (yellow) _??_ and BK (brown) _??_, where a small number of yellowish, sterile daughters appeared.
5. A male with vestigial antennae was found in the IS strain, but was sterile.
6. A vermilion-coloured eye mutant appeared in the BK strain. This character was completely recessive to the wild-type eye colour. In its fertility and vitality, however, the mutant was practically the same as the wild type.
7. Occasionally individuals with fused marginal cilia of hind wing appeared, but in no case was such abnormality inherited.
8. Inbreeding, X-ray-, colchicines-, or centrifugal treatment has no effect in inducing new mutation so far as our experiments go.

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The present paper deals with the chromosome numbers in the male complex of the following four species of fresh-water teleost fishes belonging to the Cyprinidae; Zacco temminkii (Temminck et Schlegel), Zacco platypus (Temminck et Schlegel), Pungtungia hilgendorfi (Ishikawa) and Phoxinus percnurus sachalinensis (Berg). The karyotypes of the former three species are very alike with each other and nearly identical in every respect of morphological characters. No numerical and morphological differences of chromosomes were found among these three species, as is clearly understood by reference to the accompanying figures (Figs. 1-6). The number of chromosomes was found to be uniformly 50 (2n) in the spermatogonial complex, of which at least two pairs are syntelomitic V-shape, while the remaining 23 pairs are orthotelomitic and simple rod-shape forming a well-graded series. From this evidence the supposition is possible that the haploid number is undoubtedly 25 in these species. In Phoxinus percnurus sachalinensis the condition is quite different. The haploid number observed in the primary and secondary spermatocytes was proved to be 27, the number being two more than that in the former three forms (Figs. 7-10). The diploid number is supposed, therefore, to be 54 in this species. The evidence obtained seems to show that the complement of this species contain at least four pairs of syntelomitic V-shaped chromosomes.
The following table shows the numerical relation of the chromosomes in the eypriniid fishes so far studied.

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