186 STROMBINA. 



C. MACULOSA, Sowb. PI. 60, fig. 97. 



Whorls tubercularly coronated ; white reticulated with chest- 

 nut. Length, 1 inch. 



West Coast of Central America to Cape St. Lucas. 



C. ELEGANS, Sowb. PI. 60, fig. 98. 



Shell regularly and somewhat closely longitudinally ribbed, 

 with revolving striae towards the base ; yellowish white, longi- 

 tudinally marked with chestnut zigzag lines ; aperture white, 

 outer lip strongly dentate within. Length, 1/5 inches. 



Guacomayo, W. Co. Central America, in sandy mud. 



C. TURRITA, Sowb. PL 60, figs. 99, 100. 



Shell smooth ; yellowish white, closely reticulated with chest- 

 nut, articulated at the suture ; aperture whitish, without teeth. 

 Length, 35 mill. 



West Coast of Central America, in coarse gravel and sand 



at 10 fathoms (Cuming). 



Sowerby has figured a pale variety of this species (fig. 100), 

 in which the color-markings are sharply angular. 



C. ANGULARIS, Sowb. PI. 60, fig. 1. 



Whorls with strong longitudinal ribs, the last one with an 

 angulated periphery, below which the ribs become obsolete and 

 are replaced by revolving striae ; aperture strongly dentate 

 within ; yellowish white, stained with chestnut. Length, 32 mill. 



Panama. 



Described from a single specimen obtained by Mr. Cuming. 

 I suspect that several of the species of this group will prove to 

 be mere variations of a single type when a sufficient series has 

 been obtained to study them properly. 



C. SUBULATA, Sowb. PL 60, fig. 2. 



Whorls with a narrow shoulder defined by a carina, covered 

 by revolving striae; lip externally thickened, strongly and 

 numerously dentate within ; epidermis yellowish, stained with 

 light chestnut. Length, 1-5 inches. Habitat unknown. 



Described many years ago from a single specimen and yet 

 remaining unique. The carina indicates abnormal growth. The 

 specific name is preoccupied by Duclos for a species which he 

 figured without description and which has not been subsequently 

 identified. 



