MACROCERAMUS, CUBA. 141 



usually blue-black and maculate. Last whorl rounded, not 

 distinctly carinate. Peristome not expanded or but feebly 

 so, the columellar margin in a plane with the outer lip. Pro- 

 toconch of 21/3 smooth whorls, frequently deciduous in the 

 adult stage. 



A group of closely related forms confined, so far as is 

 known, to the province of Santiago. Sculpture is inconstant 

 in many of the species, both ribbed and smoothish forms 

 occurring together. Most of those known are from the 

 southern coast. 



Hardly differing from the Haitian group of M. Tdatteanus, 

 except in wanting a subperipheral band; but this is occa- 

 sionally absent in Haitian species. 



23. M. CLAUDENS ' Gundl.' Pfr. PL 21, figs. 21-26. 



Shell rimate, ovate-turrite, solid, smoothish, under a lens 

 showing some faint growth-lines and often a close malleation. 

 Bluish or fleshy-white, typically marked with irregular, more 

 or less interrupted tawny streaks; several of the early whorls 

 bluish and finely striate. Whorls about 11 in perfect, 8-9 in 

 truncate shells, the first 2% smooth, white with a brownish 

 top, globose. Last whorl rounded. Aperture vertical, oval, 

 dark within, the peristome whitish, very slightly expanded, 

 obtuse; parietal callous thin. 



Length 17, diam. 6.2 mm. (truncate). 



Length 15.5, diam. 6 mm. (entire). 



Length 14, diam. 6 mm. (truncate). 



Eastern Cuba: Caimanera (type loc.), Yateras and Ocujal, 

 in the dist. of Guantanamo, on shrubs (Gundlach). 



M. claudens Gundl. mss., PFR., Malak. BL, vi, 1859, p. 93; 

 Novit. Conch., p. 388, pi. 89, f. 34-39; Monogr., vi, p. 35L-- 

 ARANGO, Fauna, p. 85. 



A large, solid, high-conic species, with the last whorl wider 

 than in the related forms. There are several color-forms, as 

 follows: (1) Bluish- white, with scattered blue-gray dots and 

 streaks (figs. 23, 24). (2) Larger, 18-21 mm. long, with 

 some black-brown stripes among the tawny ones (figs. 25, 26). 



