Index. 



635 



Arachnactis brachiolata, 525. 

 Archaeoplax signifera, 584. 

 Archiocidaris, 221, 223. 



Agassizi, 234. 



Arcyptera, 462. 



'■ gracilis, 463. 



liiieata, 462. 



platyptera, 463. 



Argynnis, 618. 



Aplirodite, 620. 



Atlantis, 620. 



Boisduvalii, 618. 



cliariclea, 618. 



Jlontiiius, 618, 626. 



Arion, 6, 31. 



empiricorum, 31. 



foliolatiis, 6, 31. 



hortensis, 31. 



Arionidaj, 154. 



Aspidium Kennerlyi, 513. 



Asplenium elongata, 511. 



Assiminida;, 154. 



Athyris, 221. 



^^ crassicardinalis, 219, 229, 235. 



incrassatus, 219, 233. 



Aulopora, 222. 



Auricula, 171. 



bidens, 157, 160. 



bidentata, 157, 171. 



biplicata, 157, 171. 



cinculata, 161, 171. 



coniformis, 163, 166, 171. 



cornea, 157, 161, 171. 



denticulata, 172. 



flava, 166. 



Floridiana, 165, 172. 



heteroclita, 176. 



Jaumei, 157, 160, 172. 



leucodonta, 169. 



monile, 166. 



mvosotis, 172. 



uitens, 169, 172. 



obliqua, 168, 172. 



oliva, 161, 172. 



ovula, 163, 169, 172. 



pusilla, 169, 172. 



Sayii, 172, 177. 



stenostoma, 161, 172. 



Auriculacea, 26, 152. 

 Auriculea, 171. 

 Autolytus, 390, 404. 



cornutus, 390, 404, 405; Em- 



bryology of, 384. 

 : longosetosus, 404. 



prolifer, 404. 



Schultzii, 404. 



Avicula, 221. 



circulus 219, 234. 



Aviculopecteu, 221. 



Bacteria femorata, 424. 

 Sayi, 423. 



Baculites, 511. 

 Bacunculus femoratus, 424. 



Sayi, 423. 



Baile_v, Loring W. New Species of Mi- 

 croscopical Organisms, 329. 

 Batrachidea, 474, 478. 



carinata, 479. 



cristata, 478. 



Bellerophon, 221. 



Beluga borealis, description of, 603. 



Biddulphia, 349. 



Baileyi, 335, 336, 346. 



hemitropa, 344, 352. 



pulcliella, 349. 



radiatus, 352. 



tenuis, 335, 346. 



tridentata, 346. 



trinacria, 338, 346. 



Biloculina serrata, 350. 



Binney, W. G. A Supplement to the 

 Terrestrial Mollusks of the United 

 States, &c., 1. 



Blatta bicolor, 417. 



domingensis, 417. 



parallela, 418. 



pennsylvanica, 417. 



rufescens, 417. 



Blattarite, 416. 



Blauneria, 175. 



heteroclita, 177. 



pellucida, 138, 175. 



Brachiopoda, 221, 222; Description of 



seven new species of, 226. 

 Bradybffina pisum, 50. 

 Brvozoa, 222. 

 Bulimus, 24, 124, 125, 191. 



acicuia, 137. 



alternatus, 126, 128. 



Binneyanus, 128. 



Californicus, 24. 



chordatus, 25. 



confinis, 130, 131. 



coniformis, 163. 



dealbatus, 126, 130. 



decollatus, 114, 134. 



Dormani, 132. 



elatus, 24. 



excelsus, 24. 



exiguus, 137, 178. 



fallax, 136. 



fasciatus, 137, 138. 



Floridianus, 133, 134. 



Gossei, 135, 137. 



gracillimus, 134, 138. 



Grunei, 132. 



harpa, 135, 147. 



hordeanus, 145. 



hortensis, 134. 



Humboldti, 25. 



Kieneri, 135, 137. 



lactarius, 126. 



Laurentii, 25. 



