170 CERITHIOPSIS. 



C. HORRIDA, Jeffreys. PL 36, fig. 44. 



Apex blunt, smooth, next whorl with a few longitudinal ribs, 

 normal whorls as in C. tubercularis, base concave, encircled by a 

 slight ridge ; color pale brownish yellow. Length, 9 mill. 



Mediterranean ; Madeira* 



C. GEMMULIFERUM, E. A. Smith. PI. 35, fig. 33. 



Whorls 11, the first three smooth, the others with three rows of 

 granules, the infrasutural series small ; light brown. 



Length, 4 mill. 



Whydah, W. Africa. 



C. GREENII, C. B. Ad. PI. 35, fig. 36. 



Swollen in the middle, w r ith subulate spire, whorls brown with 

 deep suture, and three rows of granules, base convex, with a few 

 spiral striae. Length, 4-5 mill. 



Massachusetts to Florida. 



Dr. Jeffreys considered this = C. tubercularis, Mtg., but I think 

 its relationship is closer to C. minima, Brusina. I am not prepared 

 to pronounce upon their identity. 



C. PUNCTATUM, Linn. PL 35, figs. 34, 35. 



Whorls fiat, longitudinally ribbed, ribs cut into three rows of 

 granules by spiral sculpture, the upper and lower rows more promi- 

 nent, the middle one often reduced to a mere line, minutely or 

 scarcely granular, and nearer the upper than the lower row, suture 

 deeply excavated, body whorl with the base concave, smooth, 

 encircled by a pair of cord-like ridges ; light or dark brown, usually 

 darker brown in the suture. Length, 12 mill. 



Massachusetts to Florida ; West Indies. 



This species is better know T ii to American conchologists as (7. 

 Emersonii, C. B. Ad. (fig. 35), but was previously described from 

 accidentally occurring European specimens as C. subulatum, 

 Montagu, and C. elegans, Blainv. Philippi was the first to identify 

 it with C.punctatum, Linn., the description of which suits it well. 



C. FLAVUM, C. B. Ad. PL 35, fig. 37. 



Bright yellowish brown, with three spiral carinse, and about 26 

 less prominent longitudinal ridges, the intersections feebly nodulous, 

 base bounded by an additional slightly nodulous ridge ; whorls 9, 

 slightly convex, thin, with distinct suture, base flattened; canal 

 short, very wide. Length, 5 mill. 



Jamaica and St. Thomas, W. L 



