ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 669 



the male is his habit of attaching himself to the ventral surface of the 

 female. A careful description of both sexes is given, and the species is 

 distinguished from G. coralliodytes Heller. 



Malacostraca of the Gulf of Odessa.* — M. Kalichewsky gives an 

 account of the higher Crustacea of the Gulf of Odessa. The report, 

 which is in Russian, deals with thirty-seven species, including Amphithoe 

 buczinsJcii sp. n., one of the Podoceridae. 



Development and Systematic Position of Nebalia.| — Margaret 

 Robinson has studied a series of stages of Nebalia. She concludes that 

 the history of development confirms Claus's view as to the Malacostracan 

 position of this form. One feature in the development of Nebalia in 

 favour of this position to which attention is drawn, is the sharpness of 

 definition with which the embryonic stages are marked off from one 

 another. Nebalia appears to be most nearly related to Mysis ; this view 

 is supported by the fact that organs which are similar in the adult are 

 alike also in their development. For example, the brood pouches in 

 the two animals are formed in the same way by spiny outgrowths on 

 the coxopodites of the thoracic legs. Other points in common are the 

 peculiar form of gastrulation, the development of the endoderm, the 

 subsequent formation of the midgut by circumcrescence, and the develop- 

 ment of the liver lobes, heart, and brain. It seems not improbable that 

 Nebalia is the most ancient living Crustacean at present known. 



New Operculate Cirriped.J — A. Gruvel describes Pijrgopsis annan- 

 dalei g. et sp. n., a new Indian type allied to Pyrgoma, but with a mem- 

 branous base (without calcareous envelope) and with a stalk suggestive 

 of the pedunculate forms. 



Hermaphroditism of Male Apus.§ — N. von Zograf has found 

 distinct ova lying free in the testes of a male Lepidurus product us. 

 Similar phenomena havo been recorded by Nebesky for Orchestia cavimana 

 and by La Valette St. George for Astacus. H. M. Bernard has noted 

 physiological as well as morphological hermaphroditism in Lepidurus 

 glacialis. 



Parasitic Copepod in Amphiura squamata.|| — E. Herouard has 

 found in the incubatory sac of this Ophiuroid a remarkable female 

 Copepod whose appendages are in part modified into long bow-like 

 structures. These help to dilate the sac. Herouard found 1-4 pigmy 

 males of triangular form fixed by hooks to the abdomen of the female. 

 The female resembles Philichthys scien® Richardi, but the male is very 

 different, being triangular and unsegmented instead of being rectilinear 

 and distinctly segmented. But the author thinks this new endoparasite 

 may be named Philichthys amphiurce sp. n. 



New Genus of Gymnoplea from Natal.H— A. W. Cooper describes 

 Adiaptomus natalensis (g. et sp. n.) whose most distinctive character 



* Mem. Soc. Nat. Nuov. Russie, xxix. (1906) pp. 1-34 (2 pis.), 

 t Quart. Joum. Micr. Sci. 1. (1906) pp. 383-433 (6 pis.). 

 % Comptes Rendus, cxlii. (1906) pp. 1558-9. 

 § Zool. Anzeig., xxx. (1906) pp. 563-7 (3 tigs.). 

 I| Comptes Rendus, cxlii. (1906) pp. 1287-9 (3 figs.). 

 4 Annals Natal Government Museum, i. (1906) pp. 97-104 (1 pi.). 



Dec. 19th. 1906 2 y 



