CEROSTOMA. 113 



M. GOULDI, A. Adams. 



Ovate fusiform, fuscous, sparsely maculated with chestnut ; 

 spire acute, whorls flattened and somewhat shouldered ; trans- 

 versely lirate, the lines unequal ; varices shortly foliated, folia- 

 tions each ending in a posterior recurved spine ; aperture ovate, 

 closed, the lip margin broadly fimbriated ; canal straight, closed, 

 longer than usual in the group. 



Tsu-Sima, Japan. 



No dimensions given ; not figured. 



M. CENTRIFUGA, Hinds. PI. 34, fig. 377. 

 Light brown. Length, 1*75 inches. 



W. C. of Veragua, N. Grenada ; 



dredged in 52 fathoms, sandy floor. 



M. EURYPTERON, Reeve. PI. 34, figs. 374, 379. 



Light yellow. Length, 2 inches. 



Japan. 



M. expansus, Sowb. (fig. 379), supposed to come from China, 

 is evidently the same species. 



M. TRIALATUS, Sowb. PL 34, figs. 372, 375 ; pi. 35, fig. 387. 



Decidedly too close to M. eurypteron. Light yellow, usually 

 banded with a darker color, The want of a tooth on the lip, 

 the usually smaller size, and the strong development of the 

 single node between the varices suffice to distinguish it from M. 

 foliatus. Length, 2'5-3'25 inches. 



Todas Santos Bay, L. California (H. Hemphill). 



M. Galifornicus, Hinds (figs. 375, 387), is a synonym. 



This shell is wrongly referred to Muricidea by Carpenter and 

 others ; it has three varices, and its relationships are certainly 

 with Gerostoma. Carpenter in his Mazatlan Catalogue describes 

 M. ? erinaceoides var. indentata, which I think may be a synonym 

 of M. Calif ornicus. His variety has three varices, whilst the 

 true M. erinaceoides (= lugubris, Brod.) has six. 



M. FOLIATUS, Martyn. PI. 34, figs. 370, 371, 373. 



White, usually banded with light chestnut. Length, 2-3 

 inches. 



Sitka to Santa Barbara, OaL, Asia f 



15 



