HISPANIOLAN AND BAHAMAN ANNULARIIDAE 



KEY TO THE SUBSPECIES OP CROSSEPOMA JACMELENSE 



81 



Shell cylindroconic jacmelense 



Shell broadly elongate-conic cayesense 



CROSSEPOMA JACMKLENSi: JACM£LENSB, new subspecies 



Plate 14, Figure 14 



This subspecies comes from Jacmel, Haiti, on the south coast of the 

 island across the south peninsula from Port-au-Prince. 



The type (U.S.N.M. No. 355354) has lost the early whorls; the 4.4 

 remaining measure : Height, 14.8 mm. ; greater diameter, 7.0 mm. ; 

 lesser diameter, 6.0 mm. The last whorl bears 117 axial riblets and has 

 four spiral threads on the umbilical wall. 



This subspecies is easily distinguished from Crossepoma jacmelense 

 cayesense by its cylindroconic shape, by having the axial ribs more dis- 

 tantly spaced, and by having the last whorl much more solute and the 

 peristome less expanded. 



U.S.N.M. No. 162928 contains 39 topotypes, 20 of which yield the 

 following average measurements : 



CKOSSEPOMA J.ACBTErENSE CAYESENSE, new subspecies 



Plate 14, Figure 15 



This subspecies ranges from Port a Piment, Haiti, eastward along 

 the south coast to Aquin, We also have a number of dead specimens 

 from lie a Vache, which I am unable to differentiate from the main- 

 island form. 



The type (U.S.N.M. No. 504028), collected by C.R. Orcutt from near 

 Les Cayes, is a complete specimen having y.y whorls and 192 axial ribs 

 on the last turn and 4 spiral threads in the umbilicus. It measures: 

 Height, 19.0 mm.; greater diameter, 9.3 mm.; lesser diameter, 7.3 mm. 



It differs markedly from Crossepoma jacmelense jacmelense in being 

 much broader and in having a much larger number of ribs. 



U.S.N.M. No. 403344 contains 1,331 topotypes from the same source. 



U.S.N.M. No. 401756 contains 102 specimens collected by Orcutt on 

 the road from Les Cayes to Laborde. 



U.S.N.M. No. 404130 contains 23 specimens collected by Orcutt on 

 a hill near and west of Metesignix, east of Port a Piment. 



U.S.N.M. 404724 contains 8 specimens collected by Orcutt in the 

 ravine west of Metesignix. 



