290 



THE VOYAGE OF H.M.S. CHALLENGER. 



Ascidiie Simplices, 25, 28, 38, 40, 42, 49, 57, 58. 



Sociales, 28, 57. 

 Ascidiidas, 29, 31, 34, 35, 38, 41, 49, 50, 57, 58, 60, 



84, 182, 187, 262, 269. 

 Ascidina?, 185. 



Ascidiopsis, YerriU, 196, 200. 

 Ascidium, Easter, 5, 6, 197. 

 Ascopera, Herdm., 59, 60, 61, 75, 262, 275. 



giganfea, Herdm., 45, 62, 66, 67, 70, 251, 



256, 275, 276 (PI. i., PI. ii. figs. 1-4 ; PI. 

 iii. figs. 3-5). 



pedunculate, Herdm., 62, 64, 65, 251, 256, 

 275 (PI. ii. fig. 5 ; PI. iii. figs. 1, 2). 

 Atria, 32, 39, 40. 

 Atrium, 39. 

 Audouin, 7. 

 Baster, 5, 197. 



Bathyoncus,-n. gen., 129, 148, 149, 150, 165, 270, 282. 

 mirabilis, n. sp., 165, 250, 256, 266, 277 

 (PI. xxiv. figs. 8-12). 

 Bladder cells, 28. 

 Blood, 53. 



Blood corpuscles, 53. 

 Blood-vessels, 29, 32, 52, 279. 



Boltenia, Sav., 5, 6, 83, 84, 85, 86, 91, 134, 230, 265, 

 270. 

 bolteni, Linn., 90. 

 clavata, 90. 

 coarcta, Gould, 88. 

 elegans, Herdm., 86, 249, 255, 277 (PI. vii. 



figs. 1-5). 

 gibbosa, Heller, 90. 

 legumen, Less., 88, 254, 258, 259. 

 ovifera, Sav., 86, 87. 

 pachydermatina, Herdm., 45, 84, 89, 252, 



257, 267 (PL vii. figs. 6-S). 

 pedunculata, M.-Edw., 90. 

 perlata, Suhni, MS., 115, 117. 



Bolteninre, 30, 41, 46, 83, 84, 128, 130, 148, 183, 262, 



265, 270, 278. 

 Botryllidc-e, 25. 

 Botrylloides, 48. 



BotryUus, 5, 6, 39, 41, 48, 51, 52, 53, 56. 

 Branchial sac, 31, 45, 51, 277, 283. 



siphon, 32. 

 Brooks, 55. 

 Ciesira, 59, 148. 



ficus, 60. 



parasitica, 60. 



7» llucida, 60. 



Capillaries, 217. 

 Carus, C. G., 6, 134. 

 Chamisso, 6. 

 Chandelon, 49. 



Chelyosoma, 7, 31, 34, 38, 183, 184, 185, 186, 284. 

 Chevreulius, 8. 

 Ciliated arcs, 36. 



Ciona, Fleni., 31, 35, 38, 39, 46, 51, 57, 183, 184, 

 185, 197, 233, 237, 238, 240, 266, 270, 

 283, 284. 

 canina, O. F. Miill., 234. 

 fnscicularis, Han., 234. 

 flemingi, Herdm., 235, 237, 249, 255 (PI. 



xxxiv. figs. 7-10). 

 intestinalis, Fleni., 234, 235, 237, 238. 

 savignyi, n. sp., 236, 253, 258 (PI. xxxv. figs. 



' 1, 2). 

 tenella, Verrill, 234. 

 Circulation, direction of, 51. 

 Classification, 25. 



Clavelina, Sav., 6, 31, 35, 46, 49, 51, 54, 55, 197, 231, 

 239, 240, 245, 266, 284. 

 enormis, Herdm., 247, 250, 255 (PL xxxv. 



figs. 3-5). 

 lex>adiformis, 247. 



oblonga, Herdm., 246, 248, 249, 255 (PL 

 xxxv. figs. 6-10). 

 Clavelinidse, 31, 35, 38, 41, 46, 57, 58, 182, 184, 234, 



237, 239, 262, 266, 269, 284. 

 Cloaca, 39. 

 Connectives, 39. 



Corella, 34, 38, 46, 51, 137, 1S3, 184, 185, 186, 187, 

 188, 189, 193, 195, 197, 234, 266, 270, 

 283. 

 eumyota, 190. 

 japonica, Herdm., 190, 192, 253, 258 (PL 



xx vi.). 

 larvceformis, 190, 191. 

 minuta, 190, 191. 

 ovata, 190. 



parallelogramma, 38, 190, 191, 192, 193,196, 

 283. 

 Corellinae, 185. 



Corynascidia, 34, 38, 183, 184, 185, 186, 230, 266, 

 270, 282, 283. 

 svhmi, 186, 250, 254, 258, 279 (PL 



XXV.) 



Course of intestine, 283. 

 Crenella, 220. 

 Ctenkella, 9, 59, 61. 



