CHLOROSTOMA. 193 



oblique irregular squamose lines ; aperture rounded-rhombic colu- 

 mella marked with a granule outside. (Phil.) 



This species is very distinct in sculpture. The 6 whorls are 

 slightly convex, and have about 9 impressed spiral lines, which are 

 so intersected by irregular impressed longitudinal lines, that the 

 result is an irregular network, very difficult to render in the illustra- 

 tion. The aperture has nothing distinctive ; the inner lip is smooth 

 inside. The columellar margin has a nacreous depression below, and 

 over it a white, blunt outward-projecting tooth. The umbilicus is 

 narrow, almost cylindrical, and is bounded by a rather acute angle ; 

 within this angle is a slight ridge, which ends in the denticle of the 

 columella. The color is a dirty flesh-tint; aperture and umbilical 

 region not colored; the former has an inferior kind of nacre. 



Alt. 12, diam. 15* mill. (PldUppi.) 



Brazil. 



T. corrugatm KOCH in PHILIPPI, Abbild., i, Trochu*, t. 2, f. 7; and 

 PHIL. Conchyl. Cab., p. 157, t. 25, f. 9. 



Unfigured Chlorostoma and Omphalius. 



C. CASTANEUM A. Adams. C. testa oblique conica, umbilicata, 

 castanea ; anfractibus planis, longitudinaliter obsolete nodoso-pli- 

 catis et oblique striatis, pen ultimo infra marginato, ultimo acut- 

 angulo, basi concavo, pallide fusca, lineis viridi-fuscls radiatim picta ; 

 umbilico infundibuliformi. perspective, intus albo, linea elevata 

 cincto ; apertura subrhomboidea ; columella supra sinuata, basi 

 dente terminata. (A. Ad.*) 



Habitat unknown. 



P.Z.S., 1851, p. 182. 



C. TURBINATUM A. Adams. C. testa turbinata, profunde umbili- 

 cata, nigra, spira obtusa, longitudinaliter subplicata, transversim 

 sulcosa; anfractu ultimo rotundato, regione umbilicali partim callo 

 lutescente obtecta ; columella antice bituberculata ; labro nigro 



marginato. (A. Ad.) 



Habitat unknown. 



L. c., p. 182. SMITH, Ann. and Mag, N. H., 1875, p. 112. 



Mr. E. A. Smith has indentified this species with specimens re- 

 ceived by him from Toba, S. Niphon, Japan. With it he unites 

 the Clilorostoma rugatum of Gould, observing that the latter differs 

 only in being more finely lirated on the base. 

 13 



