92 



BULLETIN 192, UNITED STATES NATIONAL MUSEUM 



U.S.N. M. No. 403865 contains 6 specimens collected by Orcutt at the 

 west end of the mangrove swamp. 



U.S.N.M. No. 403848 contains 25 specimens collected by Orcutt on 

 the bluff near Cape Raquettes. 



U.S.N.M. No. 401826 contains 17 specimens collected by Orcutt west 

 of Garde d'Haiti Station. 



U.S.N.M. No. 401848 contains 4 specimens collected by Orcutt at 

 Tarco on the northwest side of lie a Vache. 



U.S.N.M. No. 401892 contains 2 specimens collected by Orcutt at 

 Soulette Bay, lie a Vache. 



OBCUTTIPOMA BOL,r,EI FAtTXCAPENSE, new subspecies 



Plate 14, Figure 5 



This subspecies extends from Abricots to Faux Cap, that is, the north- 

 western part of the south peninsula. Its small size will at once distinguish 

 it from the others. 



The type (U.S.N.M. No. 504003) comes from Abricots. It is a com- 

 plete specimen having 6.1 whorls and measures: Height, 5.8 mm.; 

 greater diameter, 3.0 mm. ; lesser diameter, 2.3 mm. The last whorl bears 

 54 axial ribs, each of which has four scallops between summit and 

 suture. On the base the scallops are obsolete but there are two faint ones 

 on the outer edge of the umbilical wall. 



U.S.N.M, No. 401623 contains 4 topotypes. 



U.S.N.M. No. 401637 contains 16 specimens collected by Orcutt at 

 Faux Cap. 



OBCUTTIPOMA BOLI.EI BI>ANCHABDI, new snbspeeies 



Plate 14, Figure 7 



This subspecies John B. Henderson and I collected near Petionville, 

 and Orcutt obtained it on the estate of the Haitian Sugar Co. north of 

 Port-au-Prince. It has the axial ribs strongly lamellar, but moderately 

 scalloped ; in fact, so little are the scallops differentiated on the last turn 

 that one cannot definitely determine them. There are, however, two 

 feeble ones on the outer edge of the umbilicus. 



The type (U.S.N.M. No. 355943), which comes from Petionville, has 

 4.6 whorls, the last of which bears 46 axial ribs. It measures: Height, 

 7.5 mm. ; greater diameter, 4.2 mm. ; lesser diameter, 3.2 mm. 



Fifteen topotypes (U.S.N.M. No. 3559-^) yield the following aver- 

 age data : 



