s 54 
TABLE 
S, 
Sigaretus 9 
III, 254 
Silicaria, 
V, i 5 7 
Solen , 
111,7 
Spirula , 
V, 192 
Spondylus , 
II, 5 i 5 
Stomatia, 
III, 255 
Strombus* 
T, 
IV, 244 
Tellina, 
III, 16 
Terebellum , 
V, 71 
Terebra, 
V,11 
Terebratula, 
II , 222 
Teredo , 
II , 201 
Testacella , 
III , 258 
Tridacna * 
ni, 91 
Trigonia , 
iii, 118 
Trochus, 
IV, i 4 i 
Turbo , 
IV, 121 
Turrilites , 
V, 187 
Turritella 0 
V. 
IV, 77 
Tenus, 
III, 59 
Yolvaria , 
IV, 62 
Yoluta, 
V, 29 
^Tulsella, 
II ,291 
