186 
SUMMARY OF CURRENT RESEARCHES RELATING TO 
Ccelentera. 
New Alcyonium from Annam.- -Sydney J. Hickson {Bull. Soc. 
Zool. France , 1919, 44, 411). Description of Alcyonium icrempfi 
sp. n., a brown encrusting colony, with lnainilla-like lobes, with spicules 
in the coenenchyma and in the anthocodia in the form of double asters 
O’l mm. in length. J. A. T. 
Alcyonaria in Cambridge Museum.— Sydney J. Hickson ( Proc . 
Cambridge Phil. Soc., 1921, 20, 366-73, 1 fig.). Descriptions of some 
interesting specimens : — Clavularia dura sp. n., from off Adelaide, with 
the walls of the stolon and calices extremely hard ; Sarcodictyon catenata 
Forbes, a form hitherto recorded from the British area only, now from 
off Adelaide ; Pseudocladochonus hicksoni Verslujs, from near Tokyo, 
previously recorded from the Moluccas, a very remarkable Telestid ; 
Leptogorgia sp., a specimen collected by Darwin in 1835 ; Cavernularia 
ehuni Kiikenthal and Broch, washed ashore at Sarawak ; and Caver- 
nularia damvinii sp. n., from Darwin’s “Beagle” collection, with 
characteristic rachis spicules like mammalian metacarpal bones. 
J. A. T. 
Secondary Sex Characters in Plumularids. — M. Bedot {Revue 
Suisse Zool., 1922, 29, 147-66). In some Plumularids there is a 
transformation of hydroclads into phylactocarps, believed to protect the 
gonangia. Bedot discusses these in various types and shows that in 
many cases their protective role is dubious or unreal. He proposes to 
substitute for the word phylactocarps the word metaclad. He regards 
them as secondary sex characters in some species of Aglaophenia and 
Thecocarpus. In other words they are transformed hydroclads, showing 
sex dimorphism, but having no definite function. J. A. T. 
Protozoa. 
Chemical Composition of Spore-envelope in Nosema apis. — 
Adrienne Koehler {Zool. Anzeig ., 1921, 53, 85-7). Hitherto there 
has been no definite information in regard to the nature of the shell or 
envelope of the spore in this parasite of the bee. Very little is known 
indeed of the nature of the spore-envelope in general. By careful 
technique it has been found possible to prove that the component 
substance is cliitin. J. A. T. 
New G-regarine in Sand-hopper. — R. Poisson {Comptes Rendus 
Soc . Biol., 1920, 53, 1396-8). A description of Cephaloidophora brasili 
sp. n. from the alimentary canal of Orchestia littorea, which also contains 
Didymophyes longissima. The new form is intracellular to begin with, 
in the cells of the midgut epithelium. It becomes free in the lumen, 
singly or in syzygous couples. There are occasionally chains of three 
or four. J. A. T. 
New Ciliate in Larvae of Stegomyia. — D. Keilin ( Parasitology , 
1921, 13, 216-24, 6 figs.). A description of Lambornella stegomyiae g. efe 
sp. n., which seems to be the first recorded instance of a Ciliate parasitic 
