INDEX OF SPECIES. 



59 



Hemicardium 



biangulatum, 23, 38, 75, 97, 106, 

 128, 201. 



granifeinm, 23. 



medium, 38, 201. 



obovale, 155. 

 Hemifusus 



Belcheri, 60. 

 Heterodonax 



bimaoulatus, 12, 27, 38, 105, 

 112, 126, 151. 



^—^^ vars, 23. 



Pacificus, 78. 

 Hiatella 



oblonga, 221. . 

 Hiatula 



coinpacta, 151. 



Nuttallli, 74. 

 Hima 



decussata, P 497. 

 Hinnites 



Californiensis, 13. 



crassus, 81. 



giganteus, 8, 13, 14, 20, 22, 25, 

 26, 81, 131, 151, 169, 164, 

 193, 233, 290, 312, 



350, o 351- 



Nieklinianus, 13. 



Nuttalli, 193. 



Poulsoni, 8, 13, 131, 193, 

 233, 290. 

 Hipponyx 



antiquatus, 27, 108, 140, 194, 

 O 255, 324, 363, 365, 

 P 296, P 297, P 298, R 3. 



australis, 236, 255, P 299, 



P S3S, R 3- 

 barbatus, 24, 37, 108, 140, 194, 



19s, O 25s, 275, 324, 



366, P 299, R 3, R 4. 

 barbatus, var. eostellatus, R 4. 

 cranioides, 114, 239. 

 criapus, P 299, R 4. 

 effodiens, R 5. 

 foliaceus, 239, 255, P 296, 



P 546, R 3- 



Hippotyx 



Grayanus, 24, 27, 37, 108, 194, 

 184, 193, 200, 230, 

 2S5, 275, 282, 353, 

 360, 361, 366, P 299, 



R4, RS- 

 mitralis, P 297. 

 mitrula, 226, 324, 363, 



P 297, R 3. 

 Panamensia, 255, 275, 



324, 363, P 297, R 3. 

 planatus, 140, 255, 284, 



324, P 298. 

 radiatus, 194, 184, 200, 



O230, 0255,0 275, P 299, R 4. 

 serratus, 27, 98, 140, 195, 256, 



O 226, 236, 239, 255, 



324, 364, P 296, P 297, 



P 300, P 549, R 3, R 5. 

 snbrufus, 37, 194, 282, 230, 



275, 363, R 4. 

 tessellatus, P 90, P 549. 

 tuberculatus, R 4. 

 turaens, 23, 27, 140, 282. 

 Homalopoma 



sanguineum, 23, 74, 113. 

 Hyala 



rotundata, 104, 217. 

 Hyalasa 



tiidentata, 132. 

 Hydrobia 



compacta, 104, 217. 



Btagnalis, P 361. 



ulvje, 20, 142, 257, 327, 



366, P 361. 



lanacus 



Lessonii, 2, P 280. 

 squama, 2, P 280. 

 unguiculus, P 281. 

 unguiforrais, P 284. 

 lanthina 



bifida, P 185. 



coramuuis, 74, 366, P 186. 

 deoollata, 52, 107, 251, 316, 

 364, P 187. 



