HELIX. 97 



H. BOOTHIANA, Pfr. PL 19, fig. 16. 



Narrowly umbilicated, hyaline, very minutely striated ; whorls 5, 

 convex. Diam. 5*67 mill. 



Cuba. 



H. Lavalleana, d'Orb. (figures, but not description), is a synonym. 



Yar. VITRINA, Adams. 



Larger. Diam. 8 mill. 



Jamaica. 



H. MUSICOLA, Shuttleworth. PI. 8, fig. 66. 



Narrowly, subcovered umbilicated, very thinly, obliquely, sharply 

 costulate, the interstices striulate, chestnut corneous, epidermis 

 deciduous ; whorls 4i, convex, the last rounded. Diam. 9 mill. 



Porto Rico. 



A larger variety has a narrow white peripheral band. 



Diam. 11 mill. 



H. EUCLASTA, Shuttleworth. PI. 8, fig. 65. 



Very narrowly umbilicated, thin, waxy, with close, hair-like 

 striae, brownish corneous, suture impressed ; whorls 4, scarcely 

 convex, moderately increasing, the last not descending, periphery 

 obsoletely angulated, subexcavated around the umbilicus. 



Diam. 12*5 mill. 



St. Thomas, Cuba. 

 H. Swifti, Pfr., is a synonym. 



A variety, with the spire a little more elevated, occurs in Porto 

 Rico. 



H. MONTETAURINA, Pfr. PI. 19, figs. 17-19. 



Narrowly umbilicated, thin, striulate, pellucid, whitish hyaline, 

 suture subchanneled ; whorls 6i, very narrow, convex, the last not 



descending, base more convex. Diam. 4'67 mill. 



Cuba. 



H. ELATIOR, Weinland and Martens. PI. 19, figs. 20-22. 



Narrowly umbilicated, somewhat roughly striulate, corneous 

 hyaline; whorls 5J, convex, slowly increasing, the last a little 



turgid, not descending. Diam. 5 mill. 



Haiti. 



H. ANGUSTISPIRA. Adams. PI. 19, fig. 23. 



Narrowly umbilicated, thin, smoothish, diaphanous, corneous 

 white; whorls 5, convex, very narrow, the last not descending in 

 front, compressed on the sides. Diam. 3'67 mill. 



Jamaica. 

 1 



