SYSTEMATIC INDEX. 



11 



80. T«llina Fabula. Streaked-shelled Telliua, 



FAMILY IX. SOLENINA, 



26. SOLEN. SOLEN, 



81. Solen Siliqua. Razor-case Solen, 



82. Solen Ensis. Sabre-case Solen, 



83. Solen pellucidus. Pellucid Solen, 



27. PSAMMOBIA. PSAMMOBIA, . 



84. Psammobia Feroensis. Feroese Psammobia, 



28. Saxicava. Saxicava, 



85. Saxicava ragosa. "Wrinkled Saxicava, . 



86. Saxicava arctica. Arctic Saxicava, 



FAMILY X. MACTRINA, 



29. Mactra. Mactra, 



87. Mactra stultorum. Simpleton's Mactra, 



88. Mactra solida. Thick-shelled Mactra, . 



89. Mactra elliptica. Elliptical Macti-a, 



90. Mactra suotruncata. Small Triangular Mactra, 



30. GOODALLIA. GOODALLIA, 



91. Goodallia triangularis. Denticulate Goodallia, 



92. G oodallia minutissima. Edentulate Goodallia, 



31. LUTRARIA. LUTRARIA, 



93. Lutraria elliptica. Elliptical Lutraria, . 



94. Lutrai-ia Listen. Lister's Lutraria, 



32. Amphidesma. Amphibesma, 



9.5. Amphidesma album. White Amphidesma, 



96. Amphidesma tenue. Triangular Amphidesma, 



97. Amphidesma prismaticum. Iridescent Amphidesma, 



32. Anatixa. Anatixa, 



98. Anatina prsetenuis. Delicate Anatina, 



99. Anatina tmncata. Truncated Anatina, 



34. Thracia. Thracia, 



100. Thracia declivis. Sloping Thracia, 



101. Thracia pubescens. Roughish Thracia, 



35. Ervilia. Ervilia, 



102. Ervilia pellucida. Pellucid Ervilia, 



FAMILY XI. MYIXA, 



36. Mta. Gaper, 



103. Mya truncata. Abrupt Gaper, 



104. Mya arenaria. Sand Gaper, 



105. Mya ovalis. Oval Gaper, 



37. Lyonsia. Ltonsia, 



106. Lyonsia Norwegica, Pearly Lyonsia, 



38. Sphenia. Sphenia, 



107. Sphenia Swainsonii. Swainson's Sphenia, 

 i08~ Sphenia costulata. Ribbed Sphenia, 



Pages 

 216, 280 



216, 281 

 216, 281 

 216, 282 

 216, 282 

 216, 283 



216, 283 

 216,284 



217,284 

 217,285 



217, 285 



217, 286 

 217,287 

 217,287 

 217,288 

 217, 288 



217, 289 



218, 289 



218, 289 

 218, 290 



218, 290 

 218, 291 

 218, 291 



218, 292 

 218,292 

 218, 293 



218, 294 



219, 294 

 219, 294 

 219, 295 



219, 295 

 219, 296 

 219, 296 



341 



341 



219, 297 



219, 297 



220, 298 

 220, 298 

 220, 299 



220, 299 

 220, 300 

 220, 300 

 220, 301 

 220, 301 



