HISPANIOLAN AND BAHAMAN ANNULARIIDAE 



229 



very closely spaced axial ribs, 64 occur on the first, 104 on the second, 

 140 on the third, and 124 on the fourth in the type. 



The type (U.S.N.M. No. 355523) was collected by C. C. Allen at 

 Spanish Wells, Eleuthera, Bahamas. It has a little more than 3 whorls 

 remaining and measures : Length, 12.0 mm. ; greater diameter, 6.6 mm. ; 

 lesser diameter, 5.2 mm, 



A series of 17 topotypes from the same source (U.S.N.M. No. 347566) 

 yield the following average measurements : 



This subspecies in size and in the closeness of ribbing closely re- 

 sembles O. (O.) e. eleutheraensis. It is at once distinguished from that 

 by its pale coloration. 



U.S.N.M. No. 468122 contains 10 specimens collected by C. C. Allen 

 at Royal Island, Eleuthera. 



OPISTHOSIPHON (OPISTHOSIPHON) EI.EUTHEBAENSIS ELEUTHERAENSIS, 



new subspecies 



Plate 36, Figure 15 



In this race the shell is rose-colored, with inconspicuous spiral bands 

 of brown; the denticles at the summit are flesh-colored and stand in 

 remarkable contrast to the rest of the coloration. The peristome is flesh- 

 colored with a rosy tinge, which is also the color of the interior of the 

 aperture. Postnuclear whorls strongly rounded. The type has 82 axial 

 riblets on the first of the remaining turns, 140 on the second, and 126 

 on the last. 



The type (U.S.N.M. No. 355440) was collected by C. C. Allen on 

 Eleuthera Island, Bahamas. It has a little over 3 whorls and measures: 

 Length, 11.7 mm.; greater diameter, 6.6 mm.; lesser diameter, 5.4 mm. 



Four topot3^pes (U.S.N.M. No. 366201) yield the following additional 

 measurements : 



The bright rose color will at once distinguish this from O. (0.) e. 

 pallidus. 



