520 



Ammonites, subplanicosta, 26. 

 Ammonites, Cretaceous, 365. 

 Jurassic, 236, 365. 

 new genera of, 225. 

 Amorpha canescens, 74. 

 f ruticosa, 74. 

 microphylla, 74. 

 Ampelis cedroruna, 54, 440. 



garrulus, 440. 

 Ampelopsis quinquefolia, 73. 

 Amphora, 182. 

 Anallomes, 261. 



maranona, 262. 

 unipunctata, 262. 

 Anas boschas, 66, 343, 348, 36, 447. 



obscura, 447. 

 Ancylocheilus subarquatus, 446. 

 Androgynoceras appressum, 27. 

 hybridum, 27. 

 Androsace septentrionalis, 79. 

 Anemone Nutalliana, 71. 

 patens, 71. 

 pennsylvanica, 71. 

 Angulatidae, 15. 

 Annual Meeting, 1. 



Reports, 1, 12. 

 Anser caerulescens, 452. 

 Gambellii, 447. 

 hyperboreus, 447. 

 Antennaria dioica, 78. 

 Anthus ludovicianus, 50, 439. 

 Antilocapra americana, 40. 

 Antrostomus Nuttallii, 62, 354, 361. 



vociferus, 443. 

 Aphelocoma californica, 360. 



floridana, 360. 

 Aphryssa Butleri, 208. 

 Neleis, 209. 

 Aphyllon fasciculatum, 79. 

 Aplatacris, 271. 



colorata, 271. 

 Aplopappus Nuttalli, 77. 



spinulosa,' 77. 

 Aplysina, 205. 



aerophoba, 205. 

 aurea, 205. 

 cellulosa, 205. 

 gigantea, 205. 

 prcetexta, 205. 

 Aplysinse, 204. 

 Apocynum androsaemifolium, 81 . 



cannabinum, 81. 

 Aptenodytes patagonica, 94. 

 Aquila canadensis, 445. 

 chrysaetos, 65. 

 Area Harttii, 248. 

 Orestis, 247. 

 Archaeology of Kentucky and Indiana, 



314. 

 Archibuteo ferrugineus, 65. 

 lagopus, 445. 

 Sancti-johannis, 445. 

 Arctic Circle, possible causes of a Warm 



Climate within, 332. 



Ardea herodias, 446, 67. 



Pealii, 205. 



rufa, 205. 



rufescens, 205. 



Ardetta exilis, 447. 



Argynnis Edwardsii, 88. 



Argynnis nevadensis, 87. 

 Arietidae, 225. 

 Arnica angustifolia, 78. 

 Arnioceras ceras, 366. 



miserabilis 367. 

 Arphia conspersa, 514. 

 luteola, 515. 

 simplex, 514. 

 Arquatella maritima, 446. 

 Artemesia canadensis, 78. 



dracunculoides, 78. 

 Ludoviciana, 78. 

 Artenjin "Well, Boston, waters of, 486. 

 Arve nis albopunctatus, 283. 

 Arvicola riparius, 42. 

 Ascidia, larvae of, 130. 

 Aspidonectes spinifer, 69. 

 Aster falcatus, 77. 

 lsevis, 77. 

 multifiorus, 77. 

 oblongus, 76. 

 tenuifolius, 77. 

 Astragalus aboriginus, 74. 

 adsurgens, 74. 

 bisulcatus, 74. 

 lotiflorus, 73. 

 Nuttallianus, 74. 

 plattensis, 74. 

 racemosus, 74. 

 Astroma hastata, 266. 

 Astur atricapillus, 444. 

 Asyndesmus torquatus, 362. 

 Athol, Mass., granite from, 181. 

 Athya americana, 448. 

 vallisneria, 448. 

 Atkinson, F. P., Bequest of, 182. 

 Atrytoma Logan, 91. 

 Austin, E. P., see Spbague. 

 Avicula, sp., 367, 371. 



Bacteria exigua, 278. 



nigripes, 278. 

 Bascanion flaviventris, 69. 

 Basilarchia Disippe, 87. 



Weidemeyeri, 87. 

 Belocephalus, 458. 



subapterus, 459. 

 Bermuda Tripoli, on the discovery of, 



127, 422. 

 Bernicla brenta, 447. 



canadensis, 447. 

 Hutchinsii, 447. 

 leucopsis, 452. 

 nigricans, 447. 

 Biddulphia Baileyi, 182. 

 Blabera armigera, 280. 

 Bliss, Richard, Jr. Structure of the 



fin in certain groups of fishes, 386. 

 Bolina fasciolaris, 213, 220. 

 jucunda, 212. 

 pallescens, 213. 

 Bonasa/umbellus, 445. 

 Boracic Acid in mineral waters, 428. 

 Bos americanus, 39. 

 Boston and Narragansett Bays, 488. 

 Botaurus lentiginosus, 446. 



minor, 348, 352. 

 Boutelona curtipendula, 85. 

 oligostacha, 85. 



