CUBAN SUBFAMILY CHONDROPOMINAE TORRE AND BARTSCH 351 



The type, U.S.N.M. no. 468970, comes from Punta de Sabanilla 

 and has a little less than 4 whorls remaining ; it measures : Lengthy 

 14.3 mm ; greater diameter, 9.0 mm ; lesser diameter, 7.8 mm. 



CHONDROPOMA (CHONDROPOMA) OBESUM HERSHEI, t»cw subspecies 



Plate 32, Figure 8 



This subspecies we have seen from Santa Cruz del Norte, Boca de 

 Jaruco, and Boca de Canasi. It is a small pale-orange race and at 

 times has a subperipheral brown band; in size it is even a little 

 smaller than C. {€.) ohesum p almas ol ens e, from which the difference 

 in color will at once distinguish it. 



The type, U.S.N.IM. no. 493173, comes from Santa Cruz del Norte. 

 It has 4 whorls remaining and measures: Length, 11.0 mm; greater 

 diameter, 6.6 mm; lesser diameter, 5.5 mm. 



CHONDROPOMA (CHONDROPOMA) OBESUM OBESUM (Menke) 



Plate 32, Figure 11 



1830. TrtmcaieJla obcsa Menke, Synopsis methodica niolluscorum 



ed. 2. 



p. 137. 



This race occupies the shoreline immediately east of Matanzas Bay 

 and extends to the Canimar River. It approaches most nearly G. 

 (0.) obesum siihohemm but is readily distinguished from that by its 

 much paler color. 



The specimen figured, U.S.N.I^I. no. 493162, has a little more than 

 3 whorls remaining and measures : Length, 13.7 mm ; greater diame- 

 ter, 9.1 mm ; lesser diameter, 7.3 mm. 



A series of 68 specimens give the following summary measure- 

 ments : 



CHONDROPOMA (CHONDROPOMA) MOESTUM (Shuttleworth) Pfeiffcr 



Truncated shell ovate, rather thin, varying in color from isabeliine 

 to pale horn-color, unicolor or marked with interrupted spiral bands 

 of brown. The elements composing these are frequently also ar- 

 ranged in axial series. In the typical race the shell is unicolor, with 

 bluish lead color, veinlike axial streaks. Nuclear whorls 2, darker 

 than the postnuclear turns, forming a rather pointed apex, having 

 the whorls inflated and strongly rounded. The postnuclear whorls 



