INDEX TO VOL. XVI. 



Abastor erythrogrammus, 307. 

 Acidalia albogilvaria, 194. 

 cacuminaria, 195. 

 rubrolinearia, 28. 

 subalbaria, 28. 

 Acronycta albarufa, 239. 

 Uthospila, 240. 

 dactylina, 239. 

 Actiturius batramius, 320, 324. 

 Actodromus Bouapartei, 330. 

 maculatus, 320. 

 minutilla, 330. 

 iEgialitis melodus, 330. 



semipalmatus, 330. i 

 vociferus, 324. 

 ^giothus linaria, 308, 329. 

 JSschna Abboti, 350. 

 antilope, 354. 

 furcillata, 351. 

 heros, 351. 

 janata, 356. 

 quadriguttata, 351. 

 virens, 351. 

 Agassiz, Prof. Louis. Tributes to, 



193, 210, 211, 225. 

 Agelahis phoeniceiis, 323. 

 Agrion spec, 365. 



hastatum, 364. 

 positum, 364. 

 Kamburi, 364. 

 signatum, 365. 

 Aix sponsa, 319, 323, 325. 

 Allen, J. A. Metamorphism of Lig- 

 nite beds in Dakota and Montana, 

 246 ; geographical variation in North 

 American squirrels, 276. 

 Amber in North America, 296. 

 Ameiva 6-lineata, 307. 

 Ammonites, 166. 

 Ampelis cedrorum, 321, 328. 

 Anarta melanopa, 244. 



quadritunata, 244. 

 eubfuscula, 244. 

 Anas Brewer i, 263. 



boschas, 264, 319, 325, 331. 

 maxima, 263. 

 obscura, 331. 

 Anax Junius, 350. 



longipes, 350. 

 Ancistrodon piscivorus, 306. 

 Anisopteryx pometaria, 163, 204. 

 vernata, 204. 



Annual Meeting, 1. 



Reports, 1, 10. 

 Anser albatus, 331. 



caerulescens, 331. 

 Gambeli, 331. 

 hyperboreus, 331. 

 Anterior, 63. 



unicincta, 63. 

 Anthus ludovicianus, 321, 328. 

 Antrostomus carolinensis, 308, 314, 327 



vociferus, 314, 320, 327. 

 Aquila audax, 70. 

 Bonelli, 70. 

 canadensis, 321, 329. 

 chrysastus, 70. 

 naevia, 70. 

 naevioides, 70. 

 pennata, 71. 

 vulturina, 70. 

 Archibuteo lagopus, 72. 



sancijohannis, 329. 

 Arctomys caligatus, 294. 

 flaviventer, 294. 

 monax, 294. 

 Ardea herodias, 314, 327. 

 Ardetta exilis, 327. 

 Argia bipunctalata, 364. 

 fumipennis, 364. 

 tibialis, 364. 

 Argynnis polaris, 365. 

 Arietidae, evolution of, 166. 

 Arizona, on some birds of, 106. 

 Arnioceras, 167. 

 Ashantees, 335. 

 Asteroceras, 169. 

 Astur atricapillus, 309, 329. 

 Asturina nitida, 308. 



plagiata, 107, 308, 327. 

 Atwood, Capt. N. E. On New Eng- 

 land Fishes, 377. 

 Austin, E. P. List of Mt. Washington 



Coleoptera, 265. 

 Aythya americana, 319, 331. 

 valisneria, 331. 



Baza lophotes, 53. 

 Bdellostoma, 156. 



cirrhatum, 160. 



polytrema, 160. 

 Bignonia capreolata, 306. 

 Blue Kidge, crystalline rocks of, 115. 

 Bonasa umbellus, 324. 



(377) 



