XX Y1I1 



Lincta, 84. 



VENUS. 

 Verrucosa, 85. 

 Cassina, 86. 

 Reflexa (Distinct, 86), 

 Cancellata, 87. 

 Subcordata, 87. 

 Granulata, 88. 

 Fasciata, 88. 

 Dysera, 89. 

 Laminosa, 89. 

 Gallina, 89. 

 Pallida, 90. 

 Ot>ata, 90. 

 Substriata, 91. 

 ^e<z, 91. 

 Sarniensis, 91. 

 Sinuosa, 9 1 . 

 y^/raz, 92. 

 Firginea, 92. 

 Nitens,93 

 Decussala, 93. 

 Pullastra, 94. 



CARDWM. 



Aeuleatum, 95. 

 Tuber culatum, 95. 

 Echinatum t 96. 

 Obovale, 96. 

 Nodosum, 96. 

 Exigwim, 97. 

 <Me, 97. 

 Fasciatum, 98. 

 Medium, 98 (gr). 

 Serratum, 99. 

 Laevigatum, 99. 



ISOCARDIA. 

 Cor, 100. 



(BYSSO- 

 ARCA). 

 Noa, 101. 

 Fusca, 101. 

 Tetragona, 102. 

 Reticulata (Barbata, 



102). 

 Lactea, 102. 



(</) Most rare. Erroneously in text :< not rare." 



