288 



INDEX OF GENERA AND STECIES. 



Lucina subcireularis, 243. 



tetrica, 100. 

 LUNATIA, 77, 114, 222, 259. 



avellana, 222. 



Conradiana, 222. - 



Hornii, 222. 



Lewisii, 77. 



nuciformis, 222. 



Oregonensis, 114. 



Pedernalis, 259. 



Shumardiana, 222. 

 Luponia, 78, 163, 225. 



Bayerquei, 163, 225. 



spadicea, 78. 

 LUTRARIA, 91, 95, 117, 236. 



capax, 91. 



maxima, 91. 



Nuttallii, 91. 



transmontana, 117. 



Traskii, 56, 95. 



truncata, 236. 

 LUTRICOLA, 92. 



alta, 92. 



viridotincta, 92. 

 LYSIS, 229/, 



duplicosta, 229. 



MACH^ERA, 89. ^ 



patula, 89. 

 MACOMA, 93, 118. 



arctata, 118. 



calcarea, 124. 



edulis, 93. 



expansa, 93. 



inconspicua, 94, 124. 



inquiiiata, 93. 



dacoma nasuta, 93. 



Ocoyana, 118. 



Pedroana, 94, 124. 



yoldiformis, 93. 

 ACTRA, 91, 117, 179, 236. 



albaria, 91. 



Ashburnerii, 180, 236. 



Diegoana, 91. 



falcata, 92. 



Gabiotensis, 117. 



Gibbsana, 236. 



maxima, 91. 



planulata, 91. 



tenuissima, 179, 236. 

 MANGELIA, 73. 



variegata, 73. 



VTARGARITA, 85. 



acuticostata, 85. 



salmonea, 85, 123. 

 MARGARITELLA, 172, 229. 



angulata, 172, 229. 



crenulata, 229. 



globosa, 229. 

 MARGINELLA, 76. 



Jewettii, 76. 

 MARTESIA, 175, 233. 



clausa, 175, 233. 

 MEEKIA, 248. 



navis, 248. 



radiata, 248. 



solla, 248. 

 MEGISTOSTOMA, 232. 



striata, 232. 

 MELANIA, 13, 80. 



Taylori, 13, 80. 

 MELEAGRINA, 192, 246. 



antiqua, 192, 246. 



