CUBAN SUBFAMILY CHONDROPOMINAE TORRE AND BARTSCH 319 



pletely covers, and frequently also the area adjacent to the umbili- 

 cus ; on the parietal wall it extends over the preceding turn to which 

 it is adnate. Inner peristome exserted, slightly reflected. Breathing 

 pore on the parietal wall near the posterior angle of the aperture a 

 little behind the peristome. Operculum with the nucleus halfway 

 between marginal and central, the outside covered with a rather 

 thick deposit of calcareous granules. 



This species ranges through the mountains north of Candelaria to 

 Cuzco. 



The animal of C. {C .) ottonis ottonis has the body flesh-color, 

 with smoky suffusion; the eye stalks are coral-red. 



KEY TO THE SUBSPECIES OF CHONDROTHYRELLA (CHONDROTHYRELLA) OTTONIS 



Peristome with radiating lines of brown ottonis 



Peristome without radiating lines of brown riohondensis 



CHONDROTHYRELLA (CHONDROTHYRELLA) OTTONIS OTTONIS (Pfeiffer) 



Plate 26, Figure 5 

 1846. Cyclostoma ottonis Pfeiffer, Zeitschr. Malak., vol. 3, p. 45. 



This subspecies is very abundant along the stone fences and lime- 

 stone exposures about Taburete, La Tumba, and Soton. It is 

 elongate-ovate, dark in color with feeble brown radiations on the 

 outer peristome. 



It differs from C. (C) ottonis riohondensis in having the whorls 

 much less inflated and possessing the radiation of the outer peristome. 



The figured specimen, U.S.X.M. no. 499591, was collected by 

 Bartsch at Taburete. It has 4.7 whorls remaining and measures: 

 Length, 18.0 mm; greater diameter, 12.0 mm; lesser diameter, 

 8.5 mm. 



CHONDROTHYKELLA (CHONDROTHYRELLA) OTTONIS RIOHONDENSIS, new subspecies 



Plate 26, Figube 4 



This race extends through the mountains from Rio Hondo north- 

 ward through Pena Blanca and El Mulo. It varies somewhat in 

 color but is usually paler than the typical race, with the whorls much 

 more inflated and the peristome white without radiation. 



The type, U.S.N.M. no. 493004, comes from Rio Hondo. It has 

 4.9 whorls remaining and measures: Length, 18.3 mm; greater 

 diameter, 12.9 mm; lesser diameter, 9.3 imn. 



CHONDROTHYRELLA (CHONDROTHYRELLA) CUZCOENSIS, new species 



Shell varying in shape from ovate to broadly ovate and in color 

 from flesh-color to brown, unicolor or interruptedly spirally lined 

 with brown ; peristome white or faintly rayed with brown. Nuclear 



