The variations of internal and external morphology and body shape between and within three populations of Helobdella stagnates (Linnaeus, 1758) in northern Honshu, Japan, were examined. The results suggest that (1) the location of internal organs relative to the segmentation is not informative for Helobdella taxonomy, (2) body shape may be useful as a species-level taxonomic character for properly fixed specimens, and (3) a purportedly cosmopolitan species, H. stagnalis may need to be separated into more than one species with restricted distributional ranges.
A pycnogonid specimen of the genus Rhopalorhynchus, collected from a sponge in shallow waters off the east coast of Sabah, is described as a new species, R. cinclus, showing a number of features unique for the genus, notably the anterior placement of the dorsal proboscis tooth, the presence of small latero-ventral proboscis teeth, the presence of a small main claw in a longitarsal species, a relatively short fifth palp article, and a simple distal oviger morphology (not subchelate).
Indochinese calliphorid flies (91 species including one undetermined sp.) are reviewed. Lists of new localities, distributions, and ecological data are also given. Two new species, Verticia indochinica sp. nov. and V. guatei sp. nov., are described and illustrated. Thirty-nine species are recorded for the first time from the area of Vietnam, Laos, and Cambodia. Keys are provided for the identification of 91 species recorded from the area, excluding the following seven nominal taxa in need of revision : Phumosia violacea (Seguy, 1925), Isomyia viridana (Townsend, 1917), I. cybele (Seguy, 1949), I. didieri (Seguy, 1949), I. inops (Seguy, 1949), I. proxima. (Seguy, 1946), and Metallea minuta Seguy, 1946. One new synonymy is established, based on type-examination : Bengalia xanthopyga Senior-White, 1924 (=B. asymmetria Kurahashi and Tumrasvin, 1979, syn. nov.).
This paper describes Recent cyclostome bryozoans of the families Densiporidae and Lichenoporidae in the New Zealand region. The Densiporidae are recognised as a family with interior-walled autozooids, exterior-walled brood-chambers, and kenozooids lacking diaphragms. In New Zealand, the family comprises five species of Favosipora, of which four are new (F. candida, F. marmorosa, F. rosea, F. tincta). The generic status of Favosipora is clarified, and its scope expanded to include nine species, of which only one extends into the Northern Hemisphere. Four new combinations are introduced : Favosipora holdsworthii (Busk, 1875), F. nanozoifera (Moyano, 1982), F. otagoensis (Taylor, Schembri and Cook, 1989), and F. watersi (Borg, 1944). New Zealand Lichenoporidae presently comprise five species of Disporella-two new (D. humilis, D. sacculus), and one new species of Doliocoitis (D. cyanea). Disporella buski Harmer, 1915 and D. gordoni Taylor, Schembri and Cook, 1989 are synonymised with D. pristis (MacGillivray, 1884). Sabri's (1988) synonymising of Disporella novaezelandiae (Busk, 1875) with D. novaehollandiae (d'Orbigny, 1853) is accepted.