500 



Aphrocallistes Bocagei, 325, 327, 328 ; 

 on a form from the coast of Spain, 

 320. 



Aplysia dactylomela, Notes on, by Gr. 

 E. Dobson, 159 ; lingual ribbon of, 

 159. 



Aptychus, 189. 



Arctic Expedition, Crustacea of, 59 ; 

 Polyzoa of, 231. 



Argentina Cuvieri, 78, 82 ; decagon, 

 78, 83 ; hebridica, 78, 80 ; lioglossa, 

 84; silus, 78, 81, and descrip. of, 

 334; sphyrama, 78, 82, 84, (ftnote) 

 334; the food of, 336 ; Yarrelli, 78. 



Argentina silus, occurrence of, on shore 

 of Moray Firth, by T. Edward, 334. 



Argentine, on the Hebridal, by F. Day, 

 78. 



Ariina, 38. 



Arms Commersonii, 39 ; fissus, 39. 



Ascaris lonchoptera, 333. 



Ascidia (anat. of), 275 ; aspersa, 281, 

 332; depressa, 286; exigua, 288; 

 fusiformis, 278 ; lata, 277 ; muri- 

 cata, 285; obliqua, 286; Patoni, 

 284 ; plebeia, 287, 331 ; scabra, 284, 

 289, 330 ; triangularis, 283 ; trun- 

 cata, 280 ; virginea, 279, 330. 



Ascidians, individual variation in the 

 branchial sac of, by W. A. Herdman, 

 329. 



Ascidiida?, remarks on, 274. 



Ascopodaria, n. gen. Polyzoa (Bust, 

 MS.), 2. 



Aspredo, 39. 



Assagena phalerata, 152. 



Atherina Yarrelli, 82. 



Atta testaceo-pilosa, exp. on, 168- 



Atylus carinatus, 68. 



Audouin on segments of insects, 9, 17. 



Aulodictyon, 328. 



Auxis vulgaris, 311. 



Axinellidse (Fam. Sponges), 493. 



Bagrus, 45. 



Balanus crenatus, 73 ; porcatus, 73. 



Balistes, 45. 



Barbus, 42. 



Bee, structure thorax of, 19. 



Bela expansa, 449. 



Bell, Prof. F. Jeffrey, on an abnormal 



Amblypneustes formosus, 126. 

 , on retention of sur-anal plate in 



Echinometra, 318. 

 Belone vulgaris, 48. 

 Bert, Paul, exp. on Daphnia, 376. 

 Bicellariidas (Arctic), 233. 

 Bittium, subg. Cerithium, 99, 123, 227. 

 Blatta orientalis, 9 ; homologues of 



wings on prothorax of, 9. 



Blow-fly, A. Hammond on thorax of, 9. 

 Borsonia, subg. Pleurotoma, 473. 

 Bourgueticrinus, 211, 212. 

 Bowerbankia arctica, 241 ; gracilis, 241. 

 Braclypus castaneiceps, structure hair 



of, 337, 339. 

 Branchial sac of Ascidians, variation 



in, 329. 

 Brancbinecta arctica, 60, 70. 

 Branchipus stagnalis, 71. 

 British Fishes, observ. on, by F. Day, 



310. 

 British Tunicata, W. A. BZerdman on, 



276. 

 Bugula fruticosa, 233, 241 ; Murray- 

 ana, 233. 

 Bullhead, 35. 



Burmeister on humeri of insects, 11. 

 Busk, Gr., Descrip. Cat. sp. of Celle- 



pora of ' Challenger ' Exped., 341. 

 , on Chitinous org. of Cheilosto- 



mata and Cellepora, 357. 

 , on Polyzoa of N. Polar Exped., 



231. 

 Butler, A. Gr., on- new Moth (fam. 



Liparidse) from Madagascar, 84. 



Cainocrinus, 210. 



Caligus curtus, 67, 71. 



Callichthys asper, 35 ; punctatus, 35. 



CampbeU, F. M., on glands in maxillge 

 of Tegenaria domestica, 155. 



• , on stridulating-org. of Steatoda 



guttata and Linyphia tenebricola, 

 152. 



Camponotus inflatus, 185, 186. 



Caprella septentrionalis, 69. 



Caranax hippos, 49. 



Carassius auratus, 41. 



Carpais, 301. 



Carpenter, P. Herbert, on Solanocrinus, 

 and its relations to recent Comatulse, 

 187. 



Cassidaria, 146. 



Cassidea (Chall. Exp.), 245. 



Cellepora, 343 ; albirostris, 343, 344, 

 345, 346 ; ansata, 356 ; apiculata, 

 343, 344, 345 ; bicornis, 354 ; bi- 

 denticulata, 356 ; bilabiata, 355 ; 

 bispinata, 345, 347 ; canaliculata, 

 356; cervicornis, 237, 238; co- 

 lumnaris, 343, 344, 348 ; conica, 

 355 ; coronopus, 239 ; cylindriformis, 

 351 ; Eatonensis, 351, 352, var. ma- 

 gehensis, 342; hastigera, 343, 344; 

 honolulensis, 343, 344, 348; im- 

 bellis, 343, 349 ; Jacksoniensis, 351 ; 

 magellensis, 352; mamillata, 347, 

 354 ; nodulosa, 343, 344, 345 ; ovalis, 

 352 ; polymorpha, 353, var. a. dis- 



