CHLOROSTOMA. 191 



gin is simple, and at its junction with the cohmieHa tliere is a den- 

 ticle, terminating the ridge which bounds the umbilicus. The 

 throat has the appearance of being corrugated, but is smooth. 

 The color is a dirty pale green, with broad purple-red stripes 

 above, the base brownish, with the lirse articulated with white and 

 purple-broAvn. The columella is greenish, and the aperture has 

 greenish nacre. Alt. 10, diam. 14 mill. (Phdippl.) 



Habitat unkitown. 



Distinguished from T. viridulus by the much smaller size, more 

 depressed form, simple basal lip, and the green umbilicus-bour.ding 

 lobe of the columella, a feature approaching T. excavatus Lam. 

 (Phil) 



T. omphalium Phil., Zeitschr. f. Mai., 1848, p. 110; Conchyl. 

 Cab., p. 270, t. 39, f. 16. 



C. GRUNERi Philippi. PL 61, figs. 1, 2. 



Shell small, umbilicate, depressed, transversely striate above, 

 smooth beneath ; Avhite and scarlet spotted, shining ; last whorl 

 roundsd, encircled at the periphery with two more elevated lines; 

 umbilicus similarly encircled ; aperture suborbicular, throat silvery, 

 lip lightly sulcate within. (Phil.) 



This small species, notable for its beautiful red color, is very much 

 depressed, and consists of 5 whorls which rapidly widen. The upper 

 ones are but slightly convex, the last nearly cylindrical. The upper 

 surface is transversely [i. e. spirally] striate but shining, the base 

 smooth. Around the circumference of the last whorl there are two 

 elevated stronger lines or lirulfe, reminding one of a similar form- 

 ation in T. maculostriatus. The umbilicus is pretty broad, and 

 would pass imperceptibly into the base were it not bounded by two 

 rounded lirje close to one another. These do not terminate in denti- 

 cles. The aperture is circular inside ; the outer lip has little Yirvo 

 within ; the columella is not excavated, but is produced in a little 

 continuation, partly surrounding the umbilicus. On a white ground 

 there are bright red spots, or the shell is white and red marbled ; the 

 transverse lines are often white and red articulated. 



Alt. 6, diam 9 J mill. (Philippi.) 



Antilles. 



T. (/rimer i Phil., Zeitschr. f. Mai., 1848, p. 107 ; Conchyl. Cab., 

 p. 183, t. 28, f 13. 



