MUSEUM OF CpMPARATIVE ZOOLOGY. 93 



Siliquaria, 80, 100, 127, 220, 450, 805 fms. 



Solariidae, (sp.) 101, 119, 128, 292 fms. 



" (another sp.) 80 - 805 fms. 



n Tellina, 30, 54, 72, 80, 84, 111, 229, 805 fms. 



n Terebratula, TOO, 101, 119, 175, 270, 292 fms. 



n Terebratulina, 30, 80, 100, 101, 115, 119, 127, 220, 240, 270, 292, 450, 471, 



539, 640, 805 fms. 

 n Toraatella, 111, 310, 450, 805 fms. 

 Trivia, 100, 119, 287, 640 fms. 

 " (another sp.) 80, 175, 805 fms. 

 " (another sp.) 80, 177, 640, 805 fms. 

 Trochidce. 



n Gibbula, 54, 80, 100, 220, 805 fms. 



n Calliostoma, 70, 80, 100, 128, 805 fms. 

 Typhis, 127, 158, 182, 175, 1002 fms. 

 n Utriculus, 100, 220, 450 fms. 

 n Vermetus, 37, 80, 95, 100, 805 fms. 

 X Yoldia, 182, 190, 450, 805, 1568 fms. 



Ten distinctively tropical genera with fourteen species. 



Five distinctively arctic genera with six species. 



Twenty-eight uncharacteristic (or generally temperate-region) genera with 

 thirty-one species. 



Total species ranging from litoral to abyssal fauna, and which may be con- 

 fidently quoted, fifty-one, of forty-three genera. 



February 5, 1880. 



