Japanese RHYNCHITIDAE are systematically reviewed and revised. Four tribes, 17 genera and 62
species are recognized. Original and additional descriptions are given, with illustration sof and keys to
their taxa. The generic and subgeneric names of Voss' system are reviewed from the viewpoint of
nomenclature. At the species level ,12 new species Auletobius planifron sN,otocyrtus caeligenus ,Involvulus
flavus, I. subtilis, I. comix, I. aes, I. lupulus, Deporaus tigris, D. insularis, D. eumegacephalus, D.
septemtrionalis and D. rhynchitoides are described and 1 species Engnamptus sauteri are newly recorded
from Japan. Six species and subspecies names Auletes carvus, A. testaceus and A. irkutensis japonicus,
Auletobius okinatuaensis ,Aderorhinus pedicellari snigricolli sand Rhynchites cupreus purpuleoviolaceu sare
synonymized under Auletobius puberulus ,A. jumigatus, A. uniformis ,Ad. crioceroide sand I. cylindricollis,
respectively. One new name Deporaus vossi is given as the replacement name of the primally junior
homonym D. pallidiventris Voss, 1957 (nec Voss, 1924).
Generic and subgeneric classificatio nis revised in the following points. The genus Notocyrtus is revived
as an independent genus including subgenera Notocyrtus s. str. ,Exochorrhynchites and Heterorhynchites.
Clinorhynckites and Habrorhynchites are newly treated as each independent genera. Caenorhinus is newly
treated as a valid subgenus of the genus Deporaus. The genera Neocoenorrhinus and Piazorhynckites are
newly synonymized under Notocyrtus and Agilaus, respectively, in generic and subgeneric rank. A
subgeneric name, Aphlorhynehites subgen. nov., is established for the 8th subgenus of the genus
Rhynchites in Voss' system, which was incorrectly called as Haplorhynchites. Haplorhynchites is treated as
an independent genus, following Ter-Minassian (1950). Consequently the following names are newly
combined : Notocyrtus sanguinipennis, N. interruptus, N. assimilis and Haplorhynchites funebris.
Phylogenetic relationships of Japanese species are considered. Existing taxa in the system are
reevaluated on the basis of estimated phylogeny.
A cursorial description is given of the cranial morphology of Stegodon orientalis Owen, 1870, based on
materials collected by W. Granger during 1920-1921 from Yanjingou, Sichuan, China. The cranial vault
of S. orientalis shows enigmatic autapomorphies such as loss of the crista nuchae, a pair of prominent
domes on the vertex and a shallow groove on the forehead. Beside these enigmatic characteristics, the
cranial morphology, the forehead in particular, closely resembles that of S. trigonocephalus and S.
ganesa, suggesting a sister-group relationship for S. orientalis and the S. trigonocephalus group
(sensu Saegusa, in print)
Field experiments were conducted at the Yodogawa river in Osaka Pref. in 1988 and 1989 to clarify
the effects of different frequency cutting on growth and species composition of the Solidago altissima
community. Six plots differing in cutting frequency were examined. This community was retrogressive
at three or more cuttings per year. As cutting frequency increased, not only did the number of component
species increase, the number and percentage of annual plants per plot increased also. The percentage of
annual plants attained 50 percent or more in plots cut three times or more. Seasonal succession was
recognized in the floristic composition of this community, whose spring aspect was characterized by
winter annual plants, the autumn aspect being characterized by summer annual plants. Though winter
annual plants grew in the non-cut plot, summer annual plants did not.
Corm meristematic tissue of Arisaema yamatense Nakai was cultured on Murashige & Skoog media
(Murashige and Skoog, 1962) supplemented with 3% sucrose and growth regulators (NAA, Kinetin,
2,4-D, and BA) in several combinations. Developed corm-like tissues were subcultured. These
corm-like tissues differentiated to primordial stems and roots and they grew to stems and roots. This
redifferentiation ability has been maintained for two years.
The Kanyo Formation, distributed in the southern Kwanto Mountains, is the uppermost
lithostratigraphic unit of the Middle Carboniferous to Lower Jurassic Nishitama Group. In north of
Itsukaichi, this formation intercalates a remarkable intraformational conglomerate containing clasts of
pebble- to boulder-size acidic to intermediate igneous rocks and prolific sedimentary rocks. The
limestone clasts yield Moscovian to early Artinskian foraminifers, mostly of fusulinaceans. This paper
describes the stratigraphy of this formation in north of Itsukaichi and two fusulinaceans: Biwaella
omiensis Morikawa and Isomi and Biwaella sp. among the 52 listed foraminiferal species.