128 CEEITHIUM. 



whoi'l ; white, mottled with chestnut and ornamented by punctured 

 lines, the large tubercles l)lack tipped. Length, 1 in. 

 West Indies (Morch, Sowb., etc.) ; West Coast of N. Amer. (Car- 

 penter, Adams, etc.). 



This species I have not seen, but from the figure it appears to be 

 very close to, perhaps a spinose variety of the West Indian C. 

 ehnrneum, Brug. Morch included it in his "West Indian catalogue 

 and refers it to the MS. name C. AntiUaram, Dunker. On the 

 other hand. Carpenter includes it among his Mazatlan shells and 

 considers C. fameJicum, A.A., ivn. unfigured species from Panama, a 

 synonym; he has described a var. mediokeve. 



C LiTTERATUM, Bom. PI. 22, figs. 63 64. 



Shell with close granular, spiral stri?e, narrowly shouldered by a 

 row of tubercles ; white, the interstices of the granules chestnut or 

 chocolate spotted. Length, 1-1"5 in. 



West Indies, Florida. 



It is C. angustum, Anton. 



C. MusicuM, Sowb. PI. 22, fig. 65. 



Rudely plicate, forming a concave shoulder on each whorl ; white, 

 with music-like chocolate lines and spots. Length, 1 in. 



Habitat unkno^vn. 



C. SEMiFERRUGiNEUM, Lam. PI. 22, figs. 66, 67. 



Spirally, granosely striated, with a pair of stronger tuberculated 

 riblets in the middle' of the body whorl, and a still stronger sub- 

 sutural row, extending to the spire whorls; yellowish white, irregu- 

 larly maculated and spotted with orange, chestnut or chocolate 

 color. Length, 1-1 '5 in. 



West Indies. 



C. pictum. Wood (fig. 67), is a synonym. 



C. ATRATUM, Born. PL 22, figs. 68-70. 



Shell with a sutural row of small nodules, succeeded by a row of 

 larger ones, and below it, on the body whorl, about four rows of 

 slight granules, between each row several close incised spiral lines, 

 body whorl with a varix opposite the aperture ; greyish, more or less 

 clouded with chocolate, often almost entirely covered by varying 

 shades of the latter; when the shell is dark the aperture becomes 

 violaceous-blue. Length, 1-1-5 in. 



West Indies, Florida. 



