74 



BULLETIN 192, UNITED STATES NATIONAL MUSEUM 



The typical subspecies ranges from Pestel, on the north coast of the 

 southern peninsula, west to Anse du Clerc. Its much smaller size, less 

 developed tufting at the summit, and much stronger and more distantly 

 spaced axial ribs will readily distinguish it from P. u. cayemitensis. 



The specimen described and figured is one of 34 (U.S.N.M. No, 

 355166) collected by John B. Henderson and the author at the type 

 locality, Jeremie, Haiti. It has 8.4 whorls and measures: Length, 

 10.8 mm.; greater diameter, 4.2 mm.; lesser diameter, 3.3 mm. There 

 are 70 axial riblets on the last whorl. 



A hundred specimens yield the following comparative measurements : 



U.S.N.M. No. 425689 contains 3 cotypes received from Weinland. 



U.S.N.M. No, 380323 contains i specimen collected by Eyerdam at 

 Pestel. 



U.S.N.M. No. 355179 contains 4 specimens collected by Henderson 

 and Bartsch at Corail. 



U.S.N.M. No. 355176 contains 4 specimens collected by Henderson 

 and Bartsch on top of the range at Roseau. 



U.S.N.M. No. 355175 contains 29 specimens collected by Henderson 

 and Bartsch at Roseau, 



U,S.N.M. No. 355174 contains 24 specimens collected by Henderson 

 and Bartsch at Abricots, Vv^est of Jeremie. 



U.S.N.M. No, 355177 contains 14 specimens collected by Henderson 

 and Bartsch at Jeremie. 



U.S.N.M. No. 162956 contains 32 specimens collected by Henderson 

 and Simpson at Jeremie. 



U.S.N.M. No. 355168 contains i specimen collected by Henderson 

 and Bartsch on the second ridge west of Jeremie. 



U.S.N.M, No. 355169 contains 5 specimens collected by Henderson 

 and Bartsch on the shore cliffs at Jeremie. 



U.S.N.M, No. 355171 contains 2y specimens collected by Henderson 

 and Bartsch at Debarras. 



U.S.N.M. No. 355172 contains 4 specimens collected by Henderson 

 and Bartsch 5 miles west of Jeremie. 



U.S.N.M, No. 355173 contains 10 specimens collected by Henderson 

 and Bartsch at Anse a Cochon. 



U.S.N.M, No, 403057 contains 17 specimens collected by Orcutt near 

 the sea west of Jeremie. 



