190 BUIXETIN 192, UNITED STATES NATIONAL MUSEUM 



CHONDROPOMA (CHONDBOPS) INAGUICOI.UM, new species 



Plate 33, Figure 2 



Truncated shell pupoid ; if complete, elongate-conic. The ground color 

 varies considerably, but in the main it is flesh-colored, with a broad 

 supraperipheral spiral band of brown which usually takes in the space 

 between the peripheral keel and the one posterior to it, as well as the 

 space anterior to the peripheral keel. Aperture flesh-color. Nuclear 

 whorls almost 2, inflated, minutely granulose, forming a blunt apex. The 

 first of the postnuclear turns is marked by exceedingly slender, retrac- 

 tive curved axial threads, which are very closely approximated. The suc- 

 ceeding whorls are characterized by similar axial sculpture, the threads 

 being about as wide as the spaces that separate them, and large numbers 

 of them become fused near the summit to form cusps. The spiral sculp- 

 ture consists of three strong, almost lamellar, cords, which are equal in 

 strength and spacing. The first is as far anterior to the summit as the 

 third is posterior to the periphery. Base short, perforated, marked by 

 four strong spiral cords and the continuation of the axial riblets, which 

 extend into the umbilicus. Aperture oval. Peristome double, decidedly 

 thickened, and reflected; the inner adnate to the outer. Operculum typi- 

 cally chondropsid. 



The type (U.S.N.M. No. 469144) was collected by Bartsch on the 

 west coast of Great Inagua south of Northeast Point and east of the 

 salt lagoon. It has 4.3 whorls remaining and measures: Length, 

 10.6 mm. ; greater diameter, 5.4 mm. ; lesser diameter, 4.7 mm. 



We also collected it at many other stations on Great Inagua and also 

 at a number of stations on Little Inagua. The little Inagua material we 

 are unable to differentiate from that of Great Inagua. 



U.S.N.M. No. 392163 contains 96 topotypes from the same source. 



U.S.N.M. No. 393353 contains 187 specimens collected by Bartsch 

 halfway between Palmetto and Carmichael Points, Great Inagua. 



U.S.N.M. No. 391069 contains 54 specimens collected by Bartsch at 

 North East Point, Great Inagua. 



U.S.N.M. No. 392173 contains 8 specimens collected by Bartsch on 

 the embayment at the center of Ocean Bight, Great Inagua. 



U.S.N.M. No. 390590 contains 7 specimens collected by Bartsch at 

 Man O' War Bay about i mile north of Midi Point, Great Inagua. 



U.S.N.M. No. 390933 contains 1314 specimens collected by Bartsch 

 on Little Inagua. 



CHONDKOPOMA (CHONDBOPS) BACONI, new species 



Truncated shell cylindroconic, pupoid, varying in color from flesh- 

 color to horn-color to brown, unicolor, axially streaked or spirally inter- 

 ruptedly or continuously banded. Nuclear whorls forming a conspicuous 

 truncated mammillated apex of almost two whorls, which are inflated 

 and finely granulose, followed by a turn or more which has fine, closely 



