INDEX OF SPECIES. 



59 



Hemicardium 



biangulatum, 23, ^S, 75, 97, 106, 

 12S, 201. 



graiufeium, 23. 



medium, 38, 201. 



obovale, 155. 

 Hemifusus 



Belclieri, 60. 

 Heterodonax 



bimaculatus, 12, 27, 38, 105, 

 112, 126, 151. 



vars. 23. 



Pacificus, 78. 

 Hiatella 



ohlonga, 221. 

 Hiatula 



CO in pacta, 151. 



Nuttallii, 74. 

 Hima 



(l»>cussata, P 497. 

 Hinnites 



Californiensis, 13. 



crassus, 81. 



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

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

 193, O 233, 290, 312, 



0350,0351- 

 Nicklinianus, 13. 

 Nuttalli, 193. 

 Poulsoni, 8, 13, 131, 193, 



233, 290. 

 Hipponyx 



autiquatus, 27, 108, 140, 194, 



255, 324, 363, 365, 



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

 australis, O 236, 255, P 299, 



P 538, R 3. 



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

 195, 255, 275, 324, 

 366, P 299, R 3, R 4. 



barbatus, var. costellatus, R 4. 



cranioides, 114, 239. 



crispus, P 299, R 4. 



efiFodiens, R 5. 



foliaceus, 239, 255, P 296, 

 P 546, R 3. 



Hipponyx 



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

 O 184, 193, 200, 230, 

 255, 275, 282, 353, 

 360, 361, 366, P 299, 

 R4, Rs- 



mitralis, P 297. 



initrula, 226, 324, 363, 



P 297, R 3. 

 Panamensis, 255, 275, 



324, 363, P 297, R 3. 

 planatus, 140, 255, 284, 



O 324, P 298. 

 radiatus, 194, 184, 200, 



0230,0255,0275, P 299, R 4. 

 senatus, 27, 98, 140, 195, 256, 



226, 236, O 239, 255, 



324, 364, P 296, P 297, 



P 300, P 549, R 3, R 5- 

 subrufus, 37, 194, 282, 230, 



275, 363, R 4. 

 tessellatus, P 90, P 549. 

 tuberculatus, R 4. 

 tuuiens, 23, 27, 140, 282. 

 Homalopoma 



sautjuineuiii, 23, 74, 1 13. 

 Hyala 



rotundata, 104, 217. 

 Hyalaea 



tridentata, 132. 

 Hydrobia 



compacta, 104, 217. 



stagualis, P 361. 



ulvse, 20, 142, 257, 327, 



366, P 361. 



lanacus 



Lessonii, 2, P 280. 

 squama, 2, P 280. 

 unguiculus, P 281. 

 unguiformis, P 284. 

 lanthina 



bifida, P 185. 



communis, 74, 366, P 1S6. 

 decollata, 52, 107, 251, 316, 

 364, P 187. 



