CUBAN ANNULARIIDAE TORRE AND BARTSCH 299 



which 72 occur on the first, 12S on the second, 180 on the third, and 

 248 on the last. The spiral sculpture is also rather strong. On the 

 first turn, however, it is obsolete; 4 spu-al threads are present on the 

 second, 10 on the third, and 11 on the last between summit and 

 suture. The junction of the spiral threads and axial ribs renders the 

 latter wavy and slightly nodulose. Suture strongly constricted. 

 Periphery inflated, well rounded. Base short, inflated, well rounded, 

 marked by the continuation of the axial ribs and by 8 spiral threads, 

 which grow consecutively stronger from the periphery to the umbilicus ; 

 withm the umbilicus 9 additional weak spiral threads are present. 

 Aperture circular; peristome double, the inner slightly exserted; the 

 outer broadly expanded, considerably more so on the inner and the 

 parietal wall, strongly plicate on the middle of the inner lip, and re- 

 flected as a broad flap over the umbilicus, which it does not completely 

 cover. Operculum t3^picall5^ annularid. 



The type, U.S.N.M. No. 356263, comes from Mogote de la Jagua, 

 Pinar del Rio. It has 6.2 whorls and measures: Length, 15.4 mm.; 

 greater diameter, 10.7 mm.; lesser diameter, 8.3 mm. 



The peculiar folding — plication — of the inner lip of the outer 

 peristome readily distinguishes this from the other species. 



ANNULARIA (ANNULAROPS) BLAINI ([Gundlach] Pfeiffer) 



Shell broadly ovate, varying greatly in size in the two races. The 

 color shades from flesh color through yellowish to pale reddish, usually 

 darkest on the early turns. Nuclear whorls decollated in all our 

 specimens. Postnuclear whorls inflated, strongly rounded, marked 

 by closely spaced, somewhat wavy, sublamellar axial riblets, which 

 vary considerably in strength in the two races; the axial riblets are 

 more strongly developed at the summit, where they project as feeble 

 auricles. The spiral sculpture is also variable in the two races; it is 

 poorly expressed in A. (A.) blaini cumbrensis, while in A. (A.) blaini 

 blaini it consists of low, rounded cords. Suture strongly constricted. 

 Periphery inflated, well rounded. Base short, well rounded, marked 

 by the continuation of the axial riblets and by spiral cords, the latter 

 are also weaker in A, {A.) blaini cumbrensis. Aperture circular; 

 peristome double, the inner slightly exserted; the outer broadly ex- 

 panded on the inner lip and parietal wall, and less so on the outer and 

 basal lip, somewhat infolded on the middle of the mner lip. Umbilicus 

 partly hidden by the reflected peristome, but showing the spiral cords 

 on the umbilical wall. Operculum typically annularid. 



This species ranges through the mountains of La Giiira and east to 

 La Cumbre, near San Diego de los Banos, Pinar del Rio Province. 



KEY TO THE SUBSPECIES OF ANNULARIA (ANNULAROPS) BLAINI 



Spiral sculpture pronounced blaini 



Spiral sculpture obsolete cumbrensis 



