402 PROCEEDINGS OF THE NATIONAL. MUSEUM vol. 85 



are rather distantly spaced, and the tubercles of the last whorl con- 

 sequently have a decidedly strong aspect. 



The type, U.S.N.M. no. 367827, has a little more than 4 whorls 

 remaining and measures; Length, 15.6 mm; greater diameter, 11.0 

 mm ; lesser diameter, 8,4 mm, 



CHONDROTHYRIUM VIOLACEUM MONTANEI, new subspecies 



Plate 28, Figure 20 



This race was collected by Hermanos Leon and Roca at Rosa de 

 Gavilanes in the Sierra de Cabillete. It is a large race of elongate- 

 ovate outline, of yellowish buff ground color, with slender, well- 

 marked, interrupted spiral bands of brown whose elements are also 

 arranged in axial series. In the strength of the color marking 

 this race approximates C . violaceum vigiaense but is readily distin- 

 guished from this by its much more elongate form and much paler 

 coloration. 



The type, U.S.N.M. no, 367823, has 4 whorls remaining and meas- 

 ures: Length, 20.8 mm; greater diameter, 12.9 mm; lesser diameter, 

 10.5 mm. 



CHONDROTHYRIUM VIOLACEUM ROCAI, new subspecies 

 Plate 28, Figuee 5 



This race comes from the valley of the Rio Caracusey, Sancti 

 Spiritus, It is a small race of ovate outline, having the interrupted 

 spiral bands of brown very feeble, in which it agrees with C. viola- 

 ceum maguasense, from which, however, its much more inflated whorls 

 and coarser tubercles will readily distinguish it. The coloration is 

 dark and the outer lip very strong. 



The type, U.S.N.M, no. 367830, has 4.1 whorls remaining and meas- 

 ures: Length, 11.7 mm; greater diameter, 8.2 mm; lesser diameter, 

 6.5 mm. 



CHONDROTHYRIUM VIOLACEUM BANAOENSE, new subspecies 



Plate 28, Figure J8 



This large race comes from Banao southwest of Sancti Spiritus, 

 It has fine axial riblets of elongate-ovate outline, with the interior 

 brown and the lip white. It resembles C. violaceum ignotum but is 

 at once distinguished from it by its large size and darker interior 

 coloration. 



The type, U.S.N.M. no. 367831, has 5 whorls remaining and meas- 

 ures: Length, 20.1 mm; greater diameter, 14.1 mm; lesser diameter, 

 10.7 mm. 



