358 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 85 



same color characterizes the base of the tentacles." The largest speci- 

 men has 3.5 whorls remaining and measures: Length, 12.3 mm; 

 greater diameter, 7.2 mm ; lesser diameter, 5.8 mm. 



CHONDROPOMA (CHONDROPOMA) APPENDICU LATUM, new species 



Shell when perfect elongate-ovate, when truncated ovate, varying 

 in ground color from flesh-color to pale buff, marked with interrupted 

 spiral bands of brown whose elements are also arranged in axial 

 series. Nuclear whorls 2, forming a subcylindric apex, strongly in- 

 flated and rounded, smooth except the last portion of the last turn, 

 which shows the beginning of the postnuclear sculpture. Postnuclear 

 whorls narrowly shouldered at the sunnnit, marked on the early 

 turns by very numerous, closely spaced, hairlike, retractively slant- 

 ing riblets, which become broader as the shell advances in growth 

 but are never verj^ strongly pronounced. Several of them, however, 

 may fuse at the summit, or they may singly expand into conspicuous 

 white denticles. The spiral sculpture consists of low, poorly de- 

 veloped cords, which are not so wide as the spaces that separate 

 them. The junctions of the axial ribs and spiral cords produce feeble 

 nodules. The whole sculpture of the spire presents an obsolete effect. 

 Periphery well rounded. Base rather long, well rounded and marked 

 like the spire. The umbilical wall is also marked by spiral threads 

 and the feeble continuation of the axial ribs. Aperture broadly 

 ovate; peristome double, the outer and inner quite indistinct on 

 the basal and outer lip, but separated by an impressed line on the 

 inner lip and parietal wall. The two form a conspicuous auricle 

 at the posterior angle. Operculum thin, paucispiral, with sub- 

 marginal nucleus covered with a thin deposit of calcareous granules. 



This species is found about Gibara, Oriente Province, where two 

 races are present. 



KEY TO THE SUBSPECIES OF CHONDROPOMA (CHONDROPOMA) APPENDICULATUM 



Spiral threads of last whorl 14 subappendiculatum 



Spiral threads of last whorl 17 appendiculatum 



CHONDROPOMA (CHONDROPOMA) APPENDICULATUM APPENDICULATUM. new 



subspecies 



Plate 35, Figure 7 



This race, which was collected by Gonzales near Gibara, is the 

 larger of the two races and has the sculpture much less strongly 

 developed than the smaller race. It is also somewhat paler, with 

 the interrupted spiral lines more conspicuous. 



The type, U.S.N.M. no. 468978, has 3.3 whorls and measures: 

 Length, 16.4 mm ; greater diameter, 10.1 mm ; lesser diameter, 7.8 mm. 



