205 

 Terebellum — continued. 



fusiforme. . spire extremely obtuse, opening shorter than the 

 shell — 2t inches. 



Oliva. 



canalifera. . callus of the columella having a canal. 

 mitreola. . columella striated. 

 Laumontiana. . columella biplicated. 



plicaria. . long, spire pointed, rather short ; columella longi- 

 tudinally plaited — 1 inch. 

 clavata. . spire prominently pointed, columella with numerous 



striae — f inch 



Ancilla. 



buccinoides. . margaritaceous. 



suhulata. . spire elongated. 



oZii'MZa. . unidentated at the base. 



canalifera. . canal between the right lip and the spire. 



glandiformis . . subventricose, rather pointed at the summit, 



callous in the lower part, sutures of the whirls concealed 



— 2 inches. 



Voluta. 



harpa. . longitudinal ribs with two spines at their tops, five 



folds on the columella — 3| inches. 

 spinosa*. . subcostated ; short, pointed spinous spire ; four or 



five folds — H inch. 

 miisicalis. . longitudinal ribs with one spine, four large folds — 



3 inches. 

 muricina. . ribbed and spinous in the upper part, smooth and 



caudated in the lower, deeply grooved between the four 



columellar folds — 3^ inches long. 

 costaria. . elongated, fusiform, subcaudated, ribs plain, longi- 

 tudinal — 2i inches. 

 lyra. . spire short ; plain longitudinal ribs, denticulated towards 



the apex — 2 inches. 

 bicorona. . ribbed longitudinally, no transverse striae ; turns of 



the spire bicoronated — 2 inches. 

 crenulataf. . ribs crenatedly granulated — If inch. 

 harpula. . finely ribbed, the ribs smooth, whirls subcanaliculated, 



two very strong folds — 1| inch. 

 labrella. . ovate, subventricose, wreaths sharply carinated, spire 



denticulated — If inch. 

 depressa. . ribbed upwards, base transversely grooved, spire 



subcoronetted, columella flat — about l^ inch. 

 variculosa. . with a marginal and sometimes a dorsal varix ; 



four slight folds — about f of an inch, 

 mitreola. . lip obsoletely bidentated. 



* Strombus spinosus— Brand, Foss. No. 65. 

 t Murex suspensus — Brand, Foss. No. 70. 



