388 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 85 



CHONDROPOMA (CHONDROPOMARTES) IRRADIANS IRRADIANS (Shuttleworth) Pfeiffer 



Plate 37, Figure 1 



of 



1852. CJwndropoma irrodians (Shvttleworth) Pfeiffek, Catalogue 

 I'lianoropneumona ... in the British Museum, p. 209. 



1854. Chondroponui irradians Pfeiffer. Martiui-Chemnitz Conchylieu Cabinet, 

 vol. 1, sect. 19, p. 273. pi. 37, figs. 9-10. 



The typical form of this species was collected by Rugel at Loma 

 Qitintinal, near Matanzas. and by him sent to Shuttleworth, who in 

 turn sent a letter to Pfeiffer, who published Shuttleworth's descrip- 

 tion as cited above. We have four specimens also collected by Rugel. 

 one of which we figure, which indicate plainly that this is the small 

 dark race which extends from Quintinal southwestward through the 

 limestone block terminating at Vista Alegre. 



Figure 101. — Disiribution of tlie subspecies of CJiondropoma {Chondropoitinrtes) irradiatis: 

 (1) irradians; (2) figuroensc ; (3) pancnse ; (4) palenquense; (5) camaroneuse ; 

 (6) candicans. 



The small size and dark color are its distinguishing features. 



The specimen figured, U.S.N.M. no. 493126, has a little more than 

 5 whorls remaining and measures : Length, 13.8 mm ; greater diameter, 

 9.0 mm ; lesser diameter, 6.0 mm. 



CHONDROPOMA (CHONDROPOMARTES) IRRADIANS FIGUROENSE, new subspecies 



Plate 36, Figure 3 



This is the brilliantly colored race occupying the Abra de Figuroa. 

 It is a little larger than the typical race and much more brightly 

 colored. 



