ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 185 



e. Crustacea. 



Observations on Homarus europaeus.* — Dr. Hans Przibram has kept 

 a number of lobsters iu the aquaria of the Trieste zoological station, for 

 the purpose of making observations on regeneration, and gives some 

 notes in regard to habits. As was observed by Herrick in the case of 

 the American lobster, the animals excavated for themselves holes in the 

 sand. Much difficulty was at first found in getting the lobsters to feed, 

 eventually they were supplied with Lamellibranchs (Cardium, Scrobicu- 

 laria, Mytilus) which they took greedily, using the knobbed cheliped to 

 crush the shells. The other — the toothed — cheliped was employed as a 

 grasping organ, and appears to carry sense-organs. Tables are given 

 of the variations in weight of the captive forms, and of the changes in 

 dimensions which follow the moult. 



Occurrence of Squilla desmaresti in North Sea. f— Prof. F. Jeffrey 

 Bell has received a specimen of this species dredged in the North Sea. 

 There seems no previous record of this or any other species of Squilla 

 in that area. 



In a subsequent note J Prof. Bell acknowledges receipt of a specimen 

 of this Stomatopod from off Selsea Bay. 



New Gammarus.§ — Dr. A. Garbini describes Gammarus tetracanthus 

 sp. n. from Lake Miiggel. It is readily defined by the presence of a 

 dorsal spinous prolongation on the last thoracic and first three abdominal 

 segments. Thus there is the appearance of a dorsal saw with four teeth. 

 The author writes G. tetrachantus, but tetracanthus would be more in 

 accordance with usage. 



Copepods of Faroe Channel and Shetlands.|| — Dr. B. N. Wolfenden 

 has added considerably to I. C. Thompson's list of Dr. Fowler's collec- 

 tion of Copepods from these waters. Six new species are described. 



Structure of Lepeophtheirus and Lernaea.1T — Andrew Scott describes 

 the structure and life-history of these two fish parasites, as types of the 

 two families Caligidse and LernaBidae. In regard to the first-named 

 form, he finds no evidence that the males and immature females inflict 

 injury upon the fish, no blood being usually to be seen in the alimentary 

 canal. On the other hand, the mature females, which live on or under 

 the fins, seem to cause a considerable amount of laceration. The para- 

 sites only attack healthy fish, and leave the body should the fish become 

 weak and emaciated. In Lernsea branchialis the parasitic habit is much 

 more firmly established, and tbe adults are incapable of life if separated 

 from their host. The paper is illustrated by a number of figures. 



Affinities of Uronectes. ** — Dr. W. J. Caiman replies to Prof. 

 Fritsch's rejection of the view that this fossil Crustacean genus is allied 

 to the living Tasmanian genus Anaspides. Fritsch rejects the view solely 



* Zool. Anzeig., xxv. (1902) pp. 76-82 (1 fig.). 



t Journ. Mar. Biol. Ass., vi. (1902; pp. 387-8. 



% Nature, lxv. (1902) p. 366. 



§ Zool. Anzeig., xxv. (1902) pp. 153-4 (1 pi.). 



II Journ. Mar. Biol. Ass., vi. (1901) pp. 361-72 (2 pis. and chart). 

 % Proc. Trans. Liverpool. Biol. Soc, xv. (1901) pp. 181-241 (5 pis.). 

 ** Zool. Anzeig., xxv. (1902) pp. 65-6. 



