HISPANIOLAN AND BAHAMAN ANNULARIIDAE 77 



This species appears to be distributed over the coastal region of south- 

 western Haiti. I am recognizing three subspecies, which the following 

 key and descriptions will help to differentiate : 



KBY TO THE SUBSPECIES OF CROSSEPOMA BMILIANUM 



Shell stout gibbosum 



Shell not stout. 



Tufts at the summit very strong emiiianum 



Tufts at the summit not very strong insulanum 



CROSSEPOBIA E]VUL,IANUM GIBBOSUM. new subspecies 



Plate 13, Figure 8 



This subspecies appears confined to the coast of the south side of the 

 south peninsula where it extends from Damassins to Port Salut. 



The type (U.S.N.M. No. 536863) was collected by C. R. Orcutt on a 

 hill north of Coteaux east of the river. This subspecies is easily differ- 

 entiated from the other two by its much more gibbose form and by 

 having the axial ribs finer and less expanded at their outer edge. In 

 the type, which has 4.8 whorls remaining, there are 167 ribs upon the 

 last turn and 3 obsolete spiral cords on the outer edge of the umbilical 

 wall. The type measures: Height, 17.0 mm.; greater diameter, lo.o mm. ; 

 lesser diameter, 8.0 mm. 



U.S.N.M. No. 404032 contains 83 topotypes from the same source. 



U.S.N.M. No. 404900 contains 7 specimens collected by Orcutt at 

 Coteaux 



U.S.N.M. No. 404826 contains 21 specimens collected by Orcutt west 

 of Carpentier. 



U.S.N.M. No. 404096 contains 3 specimens collected by Orcutt on the 

 first hill east of Damassins. 



U.S.N.M. No. 404127 contains 7 specimens collected by Orcutt on 

 a hillside south of the road west of Coteaux. 



U.S.N.M. No. 403952 contains 6 specimens collected by Orcutt east 

 of Riviere de I'Anse a Drick. 



U.S.N.M. No. 403984 contains 14 specimens collected by Orcutt at 

 Point Sable west of Port Salut. 



U.S.N.M. No. 404761 contains 2 specimens collected by Orcutt on a 

 hill north of Port a Piment. 



U.S.N.M. No. 402331 contains 91 specimens collected by Orcutt on 

 the road between L'Acul and Port Salut. 



U.S.N.M. No. 403740 contains 28 specimens collected by Orcutt at 

 Port Salut. 



U.S.N.M. No. 402121 contains 26 specimens collected by Orcutt on 

 the north side of the Riviere du Port Salut near the mouth. 



U.S.N.M. No, 402159 contains i specimen collected at Acuzoo Village 

 south of the Riviere de I'Acul. 



U.S.N.M. No. 403962 contains 4 specimens collected at Anse a Drick. 



