CUBAN SUBFAMILY CHOXDEOPOMIXAE — TORRE AXD BARTSCH 385 



this respect it differs radically from Chondropoma {Chondro- 

 povmrtes) in^adians. which is ever ready to move. 



This species comes from El Palenque and the adjacent limestone 

 blocks, and extends west to Canasi. "We are recoofnizinof two sub- 

 species. 



KEY TO THE SUBSPECIES OF CHONDROPOMA (CHONDROPOMARTES) PRESASIANUM 



Shell small, pale and slender canasiense 



Shell moderately larger, darker, and stouter presasianum 



CHONDROPOMA (CHONDROPOMARTES) PRESASL\NUM CANASIENSE, new subspecies 



Plate 37, Figi-re 5 



This race comes from near Canasi. west of Matanzas. It is smaller, 

 slenderer, and paler than C. (C.) presasianum presasianum. 



The type, U.S.N.M. no. 367754, was collected by Arango. It has 

 4.8 whorls remaining and measures: Length, 14.4 mm; greater di- 

 ameter, 10.0 mm: lesser diameter, 7.0 mm, 



CHONDROPOMA (CH0NDR0P0>L\RTES) PRESASIANUM PRESASIANUM (Gundlach) 



Pfeiffer 



Plate 37. Figure 4 



1863. Chondropoma presasianum (Gu>'pl.\ch) PrEiFFER, Malakozool. Blatter, 

 vol. 10, p. ISS. 



This, the typical race, occupies the main range of El Palencpae as 

 well as some of the limestone blocks that have become separated 

 from it by erosion. It is larger, stouter, and darker than C. (C.) 

 presasianum canasiense. 



The specimen figured, U.S.X.M. no. 499603, comes from the Elena 

 Farm, El Palencj[ue. It has 5.2 whorls remaining and measures : 

 Length, 18.0 mm; greater diameter, 12.8 mm; lesser diameter, 7.5 

 mm. 



CHONDROPOMA (CHONDROPOMARTES) PORTUANDOI, new species 



Plate 37, Figuee 3 



Shell elongate-conic, early whorls dark, the rest pale yellow with 

 broad interrupted spiral bands of brown; peristome is very darkly 

 and conspicuously rayed. Xuclear v.horls 2.2, decidedly inflated and 

 strongly rounded, forming a blunt apex. Postnuclear whorls 

 marked by slender, slightly retractively curved axial and spiral 

 threads, the latter a little stronger than the axial; the jmiction of 

 the two forms low feeble hollow spines. Suture moderately con- 

 stricted. Periphery inflated, well rounded. Base short, inflated, 

 strongly rounded, openl}- umbilicated, and marked by the continua- 



66S79— 38 13 



