HISPANIOLAN AND BAHAMAN ANNULARDDAE 213 



CHONDROPO>IA (CHONDKOPOMA) HJAI.JIARSONI HJAXMABSONI Pfeiffer 



Plate 34, Figure 3 



1858. Chondropoma hjalmarsoni Pfeiffer, Malak. Blatter, vol. 5, p. 143, pi. 2, 

 figs. 9-12. 



This race was described from Turks Island and is distinguished 

 from the other two here recognized by being smaller with the whorls 

 more inflated and the banding more inclined toward forming axial zones. 

 The granulations at the summit are also more feeble than in Chondro- 

 poma (Chondropoma) hjalmarsoni gossypiniim. 



The specimen described and figured (U.S.N.M. No. ii743) has 3.5 

 whorls remaining and measures: Length, 13.0 mm.; greater diameter, 

 8.2 mm. ; lesser diameter, 6.7 mm. It was received from Thomas Bland. 



U.S.N.M. No, 391928 contains 3 specimens collected by Bartsch. 



U.S.N.M. No. 362839 contains 3 specimens intercepted by the Federal 

 Horticultural Board at Philadelphia in soil about cactus plants from 

 Turks Island. 



CHONDROPOMA (CHONDROPOMA) PL.ANICOL,tJM, new species 



Plate 34, Figure 7 



Shell of medium size, elongate-ovate, the ground color wax-yellow, 

 marked with several rows of interrupted spiral bands of brown; the 

 elements composing these bands are also in axial series and show plainly 

 within the aperture and on the edge of the peristome. Nuclear whorls 

 almost 2, inflated, strongly rounded, minutely granulose, the last portion 

 of the last turn showing a few axial hairlines. Postnuclear whorls in- 

 flated, moderately strongly rounded, and marked by low depressed spiral 

 threads, of which 14 occur between the summit and the suture. In 

 addition to this, there are fine lines of growth that hardly merit the 

 name of riblets, although they are fairly regular. Suture strongly con- 

 stricted, but not channeled. Periphery inflated, strongly rounded. Base 

 short, inflated, strongly rounded, narrowly openly umbilicated and marked 

 by spiral threads like those on the spire, but these become a little more 

 definitely spaced and stronger toward the umbilicus. Aperture ovate. 

 Peristome double; the outer forming a strong auricle at the posterior 

 angle; the inner appressed to the outer, coextensive on the outer and 

 basal lip and separated by a mere line on the inner and parietal wall 

 and the posterior angle. Operculum typically chondropomoid. 



The type (U.S.N.M. No. 469129) I collected on the western of the two 

 Plana Islands. It has 3.5 whorls remaining and measures: Length, 

 14.3 mm.; greater diameter, 9.0 mm.; lesser diameter, 7.1 mm. 



U.S.N.M. No. 391755 contains 60 topotypes from the same source. 



U.S.N.M. No. 390887 contains 18 specimens collected by Bartsch on 

 the east side of the western Plana Island. 



