HISPANIOLAN AND BAHAMAN ANNULARIIDAE 



87 



Ten topotypes (U.S.N.M. No. 355339), collected at the same time, 

 yield the following additional measurements : 



U.S.N.M. No. 402075 contains 18 specimens collected by Orcutt at 

 Mount Traverse between Fonds Verettes and Saltrou. 



HI8PANIPOMA QUATERNATUM CABABETENSE, new subspecies 



Plate 14, Figure 2 



This subspecies was collected by Mr. and Mrs. E. C. Leonard on the 

 summit of Morne Rouge, Cabaret, Moustique Bay, on the northwest 

 coast of the island. It is a pale race of elongate-ovate outline with rather 

 strong sculpture and very conspicuous tufts at the summit. 



In the type (U.S.N.M. No. 504018), which has 4 whorls remaining, 

 there are 103 axial riblets on the last whorl, 11 spiral threads on this 

 turn between the summit and the periphery, and 9 on the base and 9 on 

 the umbilical wall. It measures: Height, 13.8 mm.; greater diameter, 

 8.0 mm. ; lesser diameter, 6.7 mm. 



This race is most nearly related to its neighbor, Hispanipoma quater- 

 natum charmettense, from which it can at once be distinguished by its 

 much more elongate form. 



HISPANIPOMA. QUATEBNATUM CHABMETTEN8E, new subspecies 



Plate 14, Figure 10 



This subspecies was collected by Henderson and Simpson at Aux 

 Charmettes, near Cap-Haitien. It is easily distinguished from the others 

 by its short-ovate outline. 



The type (U.S.N.M. No. 355331) has 132 axial riblets on the last 

 turn, 1 1 spiral threads between the summit and the periphery of the same 

 whorl, 10 spiral threads on the base, and 3 heavy ones on the outside of 

 the umbilical wall and a number of obsolete threads farther in. 



ORCUTTIPOMA, new genus 



Small rhytidopomid shells varying in outline from elongate-conic to 

 ovate. The whorls are marked by slender sublamellar axial ribs, which 

 may become expanded into auricles at the summit. These ribs may be 

 straight, wavy, or even scalloped. The spaces between the axial ribs are 

 marked by numerous very fine, closely spaced spiral Unes. A series of 

 scallops arranged in spiral order may be present or absent on the outer 

 portion of the umbilicus. Aperture varying from ovate to almost cir- 



