HISPANIOLAN AND BAHAMAN ANNULARIIDAE 199 



moderately long, well rounded, and marked by the continuations of the 

 axial ribs and eight spiral threads of about the same strength as those 

 on the spire. The narrow open umbilicus shows the continuation of the 

 axial ribs and three spiral threads. The last whorl is solute for about 

 one-tenth of a turn and shows a decided carina at the posterior angle; 

 peristome double on the inner lip and parietal wall where it is narrowly 

 expanded. On the outer lip the two become fused. Operculum a simple 

 paucispiral chondroid plate. 



The type (U.S.N.M. No. 536738) has 3.3 whorls remaining and meas- 

 ures: Length, 14. i mm.; greater diameter, 7.0 mm.; lesser diameter, 

 6.0 mm. 



U.S.N.M. No. 57314 contains 2 topotypes from the same source. 



This species is easily differentiated from those farther south by its 

 more flattened whorls and detailed sculpture. 



The three shells upon which this species is based came from Rowell, 

 through the R. E. C. Stearns Collection to the U.S. National Museum. 

 The label accompanying them in Dr. Dall's handwriting says Great 

 Inagua. They were labeled Chondropoma bryanti Pfeiffer and were so 

 listed in the publications of Dall, Henderson, and Henderson and 

 Bartsch. They are not Ctenopoma bryanti Pfeiffer, which is a Colo- 

 nina. They belong to that part of Chondropoma (Chondropomorus) 

 that embraces C. antigucnse from Antigua, C. ignaeum from Anguilla, 

 and C. pupaeforme from St. Martin. They are, therefore, a long dis- 

 tance from their relatives. A careful comparison with the species men- 

 tioned above proclaims their distinctness and strengthens the case against 

 a possible wrong locality designation. 



On the other hand, we failed to find the species in Inagua during our 

 careful collecting in that island in 1930. 



CHONDROPOMA (CHONDROPOMORUS) CANESCENS NASSAUENSE, new subspecies 



Plate 32, Figure 9 



Shell elongate-conic, of pinkish flesh-colored ground color, clouded 

 with various markings and marblings of different shades of brown, the 

 most conspicuous of which are obhque, more or less rectangular spots, 

 which slant protractively from the summit, and a series of very large 

 dark brown spots a little below the periphery. In addition to these, there 

 are smaller spots arranged in both axial and spiral series on the spire 

 and base. Aperture pale brown within, showing the brown color mark- 

 ings, the large subperipheral dots forming a continuous band on the 

 inside, which extends over both the outer and inner lip. Early whorls 

 decollated; the later somewhat inflated, well rounded, marked by sub- 

 obsolete, somewhat retractively curved axial riblets, which are gathered 

 together into rather broad, short tufts at the summit, the spaces between 

 them being narrower than the tufts. The spiral sculpture consists of 

 low, weakly developed, spiral threads, which scarcely render their junc- 



