436 ZOOLOGY. 



EdrioplMalma. 



Delage (Yves). Contributions h I'cStude de I'appareil circulatotre des Crnstac^s 

 Eclriopkthalmes marins. Arch. Zool. Exp&iment, t. 9, pp. 1-144. 



E. AmpMpoda. 



Ulianin (B.). Zur Entwickelungsgeschichte der Amphipoden. Zeitschr.f.iviss. Zool., 

 V. 35, pp. 440-460. 



E. Isopoda. 



Harger (Oscar). Keport on the Marine Isopoda of New England and adjacent waters. 



Beport U. S. Fish Commission for 1878, pp. 297-462, 12 pi. 

 Kossmann (R.). Studien uberEopyriden. I. Gigantioue Moebii uud AUgemeines Uber 



die Mnndwerkzeuge der Bopyriden. II. Bopyrina Virbii, Beitriige zur Kenntniss 



der Anatomie und Metamorphose der Bopyriden. Zeitschr.f.wiss.Zool.,y.'S5,-p^. 



652-680. 

 Miers (Edw. J.). Revision of the Idoteidae, a family of sessile-eyed Crustacea. Journ. 



Linn. Soc. London, Zool., v. 16, pp. 1-88, pi. 1-3. 



Decapoda. 



Edwards (Alphouse MiLne). Description de quelques Cru8tac6s macroures provenant 



des grandes profondeurs de la mer des Antilles. (Suite.) Ann.Scienc.Nat.,{&,) 



Zool.,\.\\. (16 pp.) 

 Packard (A. S., jr.). On a Cray-fish (Cambarus primaevns) from the lower Tertiary 



beds of Western Wyoming. Bull. U. S. Geogr. and Geolog. Surv. Territ, v. 6, pp. 



391-397. 



Beep -sea Crustaceans. 



One of the most interesting as well as important results of the 

 <leep-sea investigations in recent years has been the discovery of the 

 richness of the Crustacean fauna at great depths. The Decapods ob- 

 tained by the United Siates Coast-Survey ship Blake in the Caribbean 

 Sea and Gulf of Mexico have been reported on by Prof. A. Milne Ed- 

 wards, of Paris, and the revelations have been most interesting as well as 

 unexpected. At those depths which were regarded by naturalists of 

 the past generation as devoid of life, numerous remarkable forms, pre- 

 viously wholly unknown, were discovered. The bracliyurans— true 

 crabs — occur but sparingly at great depths, but even of them species 

 extend downward as low as 400 fathoms, in which zone a form allied 

 to the genus Gonoplax is represented. It is blind, and has been named 

 by Mr. Edwards, Batliyplax. But it is the Anomurous and Macrurous 

 Decapods that are especially abundant in the deep sea. Of the family 

 of Pagurida; — hermit crabs — numerous forms were secured which are 

 interesting not only in themselves, but on account of the light they 

 cast on the morphology of the group, and the '' intermediate " types they 

 furnish. One, for example — Pylocheles Agassizii — has a regularly annu- 

 lated abdomen terminated by a symmetrical fin instead of the usual 

 soft " tail," and thus recalls the Thalassinidae. Others, on the contrary— 

 Spiropaguriis and Catapagitrus — have very small and sub-spiral abdo- 



