DE. G. S. BEABT ON CEYLON ENTOMOSTRACA. 293 



Pig. 15. One of the cocoons, showing a protruding larva which is undergoing 

 ecdysis. Part of the old skin (.r) is retained above the tail. X 3 

 diam. 

 m, mouth ; sp, spines ; bo, buccal cup ; br, buccal ring ; /, funnel ; db, dental 

 bristles (position of ) ; ph, pharynx; rf, radial fibres; ab, anterior bulb; jpb, 

 posterior bulb ; oA^, chitinous plates ; cht, chitinous cylinder ; est, chyle stomach; 

 I, lumen of mid gut ; a, anus ; op, anal prominence ; i, intestine ; r, rectum ; 

 gstc, gastro-intestinal gland-cells ; mb, muscular bands ; mc, muscle-cells ; c, 

 corpuscles ; sp, spicules ; h, hood ; rl, right lobe ; U, left lobe ; thl, third or 

 middle lobe ; ar, anterior ray ; air, antero-lateral ray ; mr, middle ray ; plr, 

 postero-lateral ray ; pr, posterior ray ; v, vulva ; vg, vagina ; e, eggs ; int, in- 

 tegument ; cu, cuticle ; d, dermis ; st, stria ; cgc, colossal gland-cell ; cii, cell- 

 nucleus ; u, uterus ; iih, uterine horns ; ovt, ovarian tube. 



Notes on Entomostraea collected by Mr. A. Haly in Ceylon. 

 By G-EORGE Stewaedson Beadt, M.D., E.E.S., T^.L.S., 



C'.M.Z.S. 



[Read 17th December, 1885.] 



(Plates XXXVII.-XL.) 



The Entomostraea here described belong to two sets of gather- 

 ings, one from fresh, the other from salt, water. The freshwater 

 species were all taken at Colombo, but of the exact localities no 

 record has been forwarded to me. The marine species, described 

 in Part II. of this paper, were dredged in a depth of 2 fathoms 

 off Calpentyn, in the G-ulf of Manaar. Eor all of them I am 

 indebted to the kindness of Mr. A. Haly, of the Colombo 

 Museum. 



Of the freshwater species, especially the Copepoda and Clado- 

 cera, the chief interest lies in their very near approach to well- 

 known European species, — all the genera being represented in 

 Northern Europe by species very closely resembling those of 

 Ceylon. Amongst the Ostracoda is a curious form, for which I 

 have thought it right to propose a new generic name, Cyprinotus. 

 And, lastly, I have beeu able to add a little to the descriptions 

 already given by Dr. Baird of two species, Cypris cylindrica 

 (G. Malcolmsoni) and C. {Glilamydothecd) subglobosa. 



The marine species are scarcely of so much interest. They 

 include no new genus, but several new species are described, and 

 some which have hitherto been only imperfectly known are, I 

 think, placed on a more secure footing. 



