17 



Ardetta, IV, 194. 



exilis, IV, 194. 

 arenaria, Calidris, IV, 196. 

 arenarius, Elymus, I, 52. 

 Arenetra, III, 138, 139t. 



nigrita. III, ISSf. 

 arenosa, Tetris, I, 69. 

 areolata, Rana, V, 22, 23. 

 arge, Notropis, IE, 60. 

 argentatus, Larus, IV, 202. 

 argenteu?, Ammoccetes, II, 70. 



Ichthyomyzon, I, 52, II, 70. 

 Argyreus atronasus, VI, 75*. 



nasutus, VI, 75*. 

 argyritis, Hybognathus, I, 45, II, 56, 



79*, 85*. 

 Argyrosomus, I, 44. 



cisco, I, 44. 



clupeiformis, I, 44, II, 54. 



hoyi, I, 44, II, 54. 



nigripinnis, I, 44, II, 54. 

 ariomma, Cliola, II, 60. 



Episema, II, 60. 

 aristosa, Coreopsis, II, 7. 

 Aristus bucephalus. III, 150*. 

 Arma, 11, 77t. 



Aniiy-wonu, III, 14, 84, 139t. 

 arnyi, Diadophis, V, 35, 

 aromatica, Rhus, I, 28, 31. 

 Aromochelys, V, 53. 



carinatus, V, 53. 



odoratus, V, 53. 

 Arphia sanguinaria, I, 63. 



sulphurea, I, 63. 



tenebrosa, I, 63. 



xanthoptera, I, 63. 

 Arquatella, IV, 195. 



maritima, IV, 195. 

 artedi, Coregonus, II, 54. 

 artemisiiefolia. Ambrosia, I, 57, III, 150t. 

 Arthonia, II, 32. 

 Arthoniei, II, 32. 

 asclepiadis, Siphonophora, II, 7. 

 Asclepias cornuti, II, 7. 

 Ascomycetes, VI, 60t, 63t. 

 Asellidfe, I, 21. 



Asellus, I, 11, 17, 21, II, 75t, 77t, 87t, 

 90, III, 30t, 36t, 37t, 41t, 43t, 

 50t, 52t, 53t, 54t, 55t, 65f, 67t, 

 68t, 93f. 



aquaticus, I, 11, 12. 



brevicauda, 1,8, 10, 11, 22. 



communis, I, 8, 10, I[, 88. 



Description of a new species of, 

 II, 90-92. 



intermedius, I, 10, 22, II, 87t, 92. 



microcephalus, I, 11. 



militaris, II, 87t, 90. 



stygius, I, 11, 22. 

 Asimina, I, 27, 28, 29, 30, 31. 

 Asio, IV, 187. 



accipitrinus, IV, 187. 



americanus, IV, 187. 

 asio. Scops, IV, 187, 191. 

 asper, Aspidonectes, V, 52. 

 Aepidoglossa subangulata, VI, 57f. 

 Aspidonectes, V, 51, 52. 



asper, V, 52. 



ferox, V, 52. 



nuclialis, V, 52. 



spinifer, V, 52. 

 asprellus, Pleurolepis, 11, 38, III, 22*. 

 asprigenis, Pcecilichthys, II, 41, 75*, 



84*, III, 23*. 

 Astacidse, I, 18. 

 Asterella, II, 25. 

 Aster puniceus, I, 59. 

 Astomum, II, 19. 

 Astragalinus, IV, 178. 



tristis, IV, 178, VI, 11*. 

 Astur, IV, 189. 



atricapillus, IV, 189. 

 Asturina, IV, 189. 



plagiata, IV, 169, 189. 



nitida, var. plagiata, IV, 189. 

 Atsenius, III, 143t. 

 ater, Molothrus, IV, 182, VI, 13*, 29*, 



31*, 32*. 

 Atherinidaj, I, 42, II, 51, 78*, 85*, VI, 



65*, 69*. 

 atherinoides, Minnilus, VI, 86*, 94*. 



Notropis, II, 60, 80*, 85*. 

 atlanis, Caloptenus, I, 68. 

 atmodes, Heterodon, V, 44. 

 atrarius, Amiurus, I, 50, II, 67. 

 atrata, Catharista, IV, 190. 

 atricapillus, Astur, IV, 189. 



Parus, IV, 172, VI, 8*, 28*. 30*, 

 31*. 

 Atrichium, II, 21. 

 atricilla, Larus, IV, 202. 

 atripes, Lythrurus, II, 59. 



