326 PROCEEDINGS OF THE NATIONAX. MUSEUM vol. 86 



a somewhat feeble obsoletely reticulated aspect. The peristome is 

 thickened and the inner lip conspicuously double. 



The type, U.S.N.M. no. 493008, has 3.3 whorls remaining and 

 measures: Length, 12.2 mm; greater diameter, 7.4 mm; lesser diam- 

 eter, 6.5 mm. 



CHONDROPOMA (CHONDROPOMA) POEYANUM POEYANUM (Orbigny) 



Plate 30, Fir.UKE 6 



1*^42. CycJostoma poci/antim Okbigny, in Sagra's Histoire phj'sique, politique et 



uatiirelle de rile de Cuba, vol. 1, p. 264, pi. 22, figs. 24-27. 

 1851. Chondi-opoijia pocyanum Pfeiffer, Zeitsclir. Malak., 1851, p. 172 (in part). 

 1856. CJiondropoma tenuiliratum Pfeiffeb, Malakozool. Blatter, vol. 3, pp. 48-49. 



This subspecies comes from the immediate vicinity of Habana, 

 being particularly abundant about the coastal ridge between Cabanas 

 and Cojimar- 



The typical form is more inclined to a cylindro-conic shape than 

 the two other subspecies, which have more inflated whorls. Here we 

 find the range of variation from the simple to the double lip in every 

 gathering, which makes it necessary to fuse tenuilirata with this 

 subspecies. 



The specimen described and figured, U.S.N.M. no. 104483, has 

 4.5 whorls remaining and measures : Length, 12.6 mm ; greater diam- 

 eter, 7.2 mm; lesser diameter, 6.0 mm. 



CHONDROPOMA (CHONDROPOMA) POEYANUM OCCIDENTALE, new subspecies 



Plate 30, Figure 7 



This race occupies the west range of the species. We have it from 

 Cabanas Light. The shell is thin and shining, and the spiral sculp- 

 ture is enfeebled, giving the axial sculpture greater prominence by 

 contrast. The whorls are inflated, in this respect resembling C. {O 

 poeyanuiTh jibacoense^ but here the shell is much thinner and the 

 peristome much less thickened and less conspicuously double on the 

 inner lip. 



The type, U.S.N.M. no. 367791, comes from Cabanas Light. It has 

 3.3 whorls remaining and measures : Length, 13.3 mm ; greater diam- 

 eter, 7.8 mm ; lesser diameter, 6.3 mm. 



CHONDROPOMA (CHONDROPOMA) LEMBEYI, new species 



Plate 30, Figure 8 



The truncated shell is elongate-ovate. The first of the remaining 

 whorls is pale brown, the rest flesh-color, marked by interrupted 

 spiral lines of brown; the elements making up these bands are ar- 

 ranged in both axial and spiral series and not infrequently become 



