Balanophyllia socialis, viii. 308, 333, 337, 338, 342. 
Balearica pavonina, vi. 511. 
Balicassius furcatus, ix. 180. 
—— philippensis, ix. 180. 
Balistes forcipatus, ii. 193. 
frenatus, vi. 396, 490. 
— lunulatus, ii. 193. 
—— niger, vi. 396. 
vetula, vi. 396. 
Barasingha Deer in the Society’s Gardens, list of, 
vii. 347. 
Barbary Ape, x. 58. 
Barbus Ihudree, ii. 357. 
kolus, ii. 357. 
mussullah, ii. 356. 
Basiana abyssinica, ix. 596. 
bilineata, ix. 595. 
canescens, ix. 581. 
cervind, ix. 596. 
deucalion, ix. 595, 
excusta, ix. 595, 644. 
—— phalaris, ix. 596, 640. 
postica, ix. 596. 
pudorina, ix, 596. 
semifervens, ix. 596. 
—— submarginalis, ix. 594. 
suffusa, ix. 594. 
superba, ix. 582. 
Basileornis celebensis, vil. 77. 
corythaix, vill. 77. 
Basiothea idricus, ix. 552, 553. 
Bat, remarkable species of Pteropine, ii. 31-38. 
Bathycyathus atlanticus, viii. 306, 318, 337, 339, 
343 ; x. 239, 248. 
— chilensis, viii. 318. 
— minor, x. 236, 239, 245, 248, 249. 
sowerbyi, vill. 318. 
Batrachia, on the structure of the heart in the 
Perennibranchiate, 1. 213-220. 
Batrachus liberiensis, vi. 435. 
pacifici, Vi. 383, 388, 435. 
surinamensis, vi. 388. 
Baza magnirostris, viii. 36 ; ix. 143, 249, 
reinwardtit, vill. 36. 
Bear, Great Cave-, x. 63. 
. See Ursus. 
Bearded Titmouse, x. 285. 
Trans. Zoou. Soc. Inprx, Vors. I.—X. 
17 
Belone gracilis, iii. 13. 
graii, i. 367. 
vulgaris, ii. 182, 188, 367 ; ii. 13. 
Belonesox belizanus, vi. 394, 404. 
Beluga, vi. 96, 97, 98, 114, 115, 329, 330, 333, 
361. 
leucas, vi. 340, 
Berardius arnouwi, x. 416, 429. 
, description of the skeleton of, viii. 
217-233. 
—— ——.,, notice of, stranded on the sea-beach, 
near New Brighton, Canterbury, New Zealand, 
viii. 214, 
hectori, viii. 211; x. 417. 
Bernicla brenta, vi. 119, 123. 
cyanoptera, Vii. 329. 
ruficollis, vi. 375. 
Beroe pileus, on the nervous system of, i. 9-12. 
ovatus, 1. 11. 
Beryx decadactylus, ti. 175 ; iii. 1, 
—— ruber, ii. 174. 
splendens, ii. 174, 200; iii. 2. 
Bird, Didine, of the island of Bourbon, vii. 
373. 
Birds, comparison of powder-patches in various 
genera of, vii. 479, 484. 
, fossil, from the Zebbug Cave, Malta, vii. 119- 
124, 501, 502, 505, 506, 517, 518. 
, observations on the laws which appear to in- 
fluence the assumption and changes of plumage 
i, loos 
, table of Indian genera of, found in Celebes, 
viii. 24. 
, table showing the Australian genera of, found 
in Celebes, vii. 25. 
—, table showing the genera of, represented in 
Celebes which likewise occur both within and 
beyond the limits of the Indian region, viii. 25, 
——,, table showing the genera of, found in Celebes, 
which are also common to the Indian and Aus- 
tralian regions, vill. 25. 
, table showing the principal Austro-Malayan 
or Papuan genera of, which do not oceur in 
Celebes, viii. 29. 
, table showing the principal Indian genera of, 
which are wanting in Celebes, viii. 27. 
Bison bonassus, x. 140. 
E 
