444 



INDEX TO VOL. XIX. 



AcARi, on the development of, in 

 potatoes, 71. 



iEgosoma, new species of, 413. 



^thina, new species of, 177. 



Agaricus vaginatus, on fecundation 

 in, 73. 



Agassiz, A., on the young stages of a 

 few Annelids, 203, 242. 



Alder, J., notice of the late, 143. 



Alepisaurus, on the identity of, with 

 Plagyodus, 185. 



Alindria, new species of, 334. 



Amecera, characters of the genus, 162. 



Amphicrossus, new species of, 177. 



Amphioxus lanceolatus, on the deve- 

 lopment of, 69. 



Anadebis, description of the new ge- 

 nus, 50. 



Ancyloceras, new species of, 356. 



Annelids, on the young stages of a 

 few, 203, 242. 



Anthers, on the nature of, 228. 



Antilocapridaj, on the systematic po- 

 sition of the, 58. 



Aphides, on the reproduction of the, 

 360, 367. 



Apus cancriformis, new locality for, 

 376. 



Argulus, on a new species of, 45. 



Argynnina, description of the genus, 

 165. 



Argyroneta aquatica, on the habits 

 of, 283. 



Arhina, new species of, 179. 



Arius, new species of, 429, 441. 



Artema convexa, new localities for, 

 394. 



Assiminea, new species of, 381. 



Axyra, new species of, 171. 



Balbiani, M., on the reproduction of 

 the Aphides, 367. 



Balistes, new species of, 442. 



Bate, C. S., on the dentition of the 

 common mole, 377- 



Batrachus, new species of, 441. 



Baudelot, E., on the cephalic disk of 

 the Remora, 375. 



Belemnitella, new species of, 356. 



Bereodes, description of the new ge- 

 nus, 400. 



Bigsby's, Dr. J. J., brief account of 

 the ' Thesaurus Siluricus,' 289. 



Birds, new, 184, 369. 



Bixorestes, characters of the new ge- 

 nus, 315. 



Blackwall, J., on the falces and 

 maxillae of spiders, 258; on new 

 species of East-Indian spiders, 387. 



Blanford, W. T., on the genus Plec- 

 tostoraa, and on the animal of 

 Diplommatina, 305; on new species 

 of Assiminea, 381. 



Book, new : — 'Moore's Cybele Hi- 

 bernica, 286. 



Bornet, E., on the fecundation of the 

 Florideae, 35. 



Bothrideres, new species of, 337. 



Branchipus stagnalis, new locality 

 for, 376. 



Brodie, Rev. P. B., on the lower Lias 

 at Barrow-on-Soar, and on the re- 

 mains of insects at Barrow, 31. 



Brototyche, characters of the new ge- 

 nus, 317. 



Butler, A. G., on a new genus of 

 Diurnal Lepidoptera, 49; on the 

 variation of Cyllo Leda, 51 ; on 

 some new genera of Satyridae, 124, 

 161. 



Campanulariae, on the contractile 

 substance and intimate structure 

 of the, 54. 



Caranx, new species of, 441. 



Carpenter, Dr. W. B., on the perforate 

 structure of the shell of Spirifer 

 cuspidatus, 29. 



Caterpillars, on the eyes of, 61. 



Cells, on the formation of, in animal 

 bodies, 140. 



Centipede, on Pauropus, a new type 

 of, 8. 



Cerambycidae, new genera of, 307. 



Ceratrichodes, description of the new 

 genus, 6S. 



Chondodendron, observations on the 

 genus, 187. 



