503 



Day, 31 ; observations on some Bri- 

 tish, by F. Day, 310. 



Fish, affections of, 33, 41, 42; anger 

 displayed, 42, 46 ; change colour of, 

 33 ; commensalism of, 51 ; courage 

 of, 40 ; Cuvier on intellig. of, 31 ; 

 destroy fry, (ftnote) 39; egg-hatching, 

 41 ; eggs, care of, 38; exhibit contempt, 

 57 ; fear shown, 47 ; fights of, 44 ; 

 follow ships, 56 ; friendship of, 50 ; 

 go on land, 55 ; intelligence, 46, 53 ; 

 join in attack, 55 ; nest-building of, 

 33-38 ; sounds emitted by, 49; spawn- 

 ing of, 40, 41. 



Flustra serrulata, 234. 



Flustridee (Arctic), 234. 



Forel on ants, 185. 



Formica cinerea, 174, 175, 386 ; flava, 

 387 ; fusca, 170, 174, 175, 364, 369, 

 385 ; rufa, 179 ; sanguinea, 175. 



Fossarus, 87, 98 ; Adansoni, 98 ; cereus, 

 97. 



Fossil Walrus, tusks of, 144. 



Gamasinge, classified by charac, 301 ; 

 conclusions regarding, 308 ; food of, 

 298, 300 ; predatory habits of, 299. 



, observations on the life-histories 



of, by A. D. Michael, 297. 



Gamasus coleoptratorum, 299, 306, 

 and observ. on, 303 ; crassipes, 302, 

 and observ. on, 305 ; marginatus, 

 307, 309 ; nemorensis, 302 ; testudi- 

 narius, 299. 



Gammarus locusta, 68. 



Gasteropoda, on the classification of, 

 by Dr. J. D. Macdonald, Part I., 161; 

 Part II., 241. 



dioecia, 243 ; tables classif. of, 



243. 



moncecia, 163 ; tab. divis. of, 



163. 



, representative relationships of, 



161 ; shell-charac. of, 162. 

 Gasterosteus aculeatus, (ftnote) 34, 39, 



44 ; pungitius, 36, 40 ; spinachia, 



37. 

 Gastrophilus elephantis, 333. 

 Geddes, P., Crustaceans coll. by, at 



Vera Cruz, 85. 

 Genota, subg. Pleurotoma, 388, 404. 

 Geotrupes stercorarius, 15, 18, 301, 



304. 

 Gibbula, subg. Trochus, 90. 

 Girasia, 292. 

 Glands in maxillae of Tegenaria domes- 



tica, 155. 

 Glenocrinus, 189. 

 Glenotremites, 189, 191. 

 Glyciphagus, 308. 



Godwin- Austen, Lieut.-Col. H. H., on 



Durgella and its anatomy, 291. 

 Goerius olens, 19. 

 Gooroo mas, 43. 

 Gould on ants, 182. 

 Gouramy, 33. 

 Greenland Crustacea, 59. 

 Gymnolaemata (Chal. Exped.), 342. 

 Gymnotus electricans, 46. 



Haddon, A. C, on Extinct Land- 

 Tortoises of Mauritius and Rodriguez, 

 58. 



Hsematomyzus, 333. 



Hair of Sloths, struct, and green colour 

 of, 337. 



Halichondria infrequens, 478 ; nigri- 

 cans, 478 ; pulchella, 478. 



Hammond, A., on the Thorax of Blow- 

 fly, 9. 



, consid. segm. of Insects, 15 ; 



analog, of segm. in divers insects, 16. 



Hardback fish, 35. 



Hassar fish, 35. 



Haustator, 218. 



Hebridal Argentine, F. Day on, 78. 



Hela, 96. 



Heliastes lepidurus, 48. 



Helicarion Bensoni, 296 ; bicarinatus, 

 296; gutta, 296; incertus, 296; 

 praestans, 292 ; tigrinus, 296. 



Helix Schrammi, 95. 



Hemeschara Landsborovii ?, 238 ; sin- 

 eera, var. inermis, 237. 



Hemiactis, 245. 



Hemipholis, 73 ; new form described, 

 138 ; Wallichii, 143. 



Herdman, W. A., on British Tunicata, 

 with Descript. of new Sp. — I. Asci- 

 diidee, 274. 



, on Yariation in Branchial Sac of 



Ascidians, 329. 



Hertha mystica, 213. 



Heteroglossa, term applied to certain 

 Gasteropods, 242. 



Heterophrosynidte (Chall. Exped.), 87. 



Heteropoda, Dr. Macdonald's arrang. 

 of, 162. 



Hippocampus, 41. 



Hippolyte groenlandica, 62 ; Lilljeborgi, 

 62 ; polaris, 62 ; securifrons, 62 ; 

 spinis, 61. 



Holocanthus tricolor, 317. 



Homopus, 333. 



Honey-ant (Camponotus inflatus), 185. 



Huber's exp. on ants, 182. 



Hyalonema?, 452. 



Hyas coarctatus, 60. 



Hydroid Medusa, new freshwater form 

 of, Prof. G. J. Allman on, 131. 



