CUBAN ANNULlVRIIDAE — TORRE AND BARTSCH 291 



Outer peristome of inner lip not notched, umbilicus open. 



Outer peristome of inner lip plicate plicata 



Outer peristome of inner lip not plicate. 



Outer peristome of inner lip slightly infolded. 



Shell broadly ovate blaini 



Shell elongate-ovate tryoni 



Outer peristome of inner lip not infolded perplexa 



ANNULARIA (ANNULAROPS) SAUVALLEI ([Gundlach] Pfeiffer) 



Shell broadly ovate, flesh colored to pale orange. Nuclear whorls 

 almost 2, smooth. Postnuclear whorls mflated, strongly rounded, 

 marked by slender, sublamellar axial ribs, which are rendered wavy 

 by the spiral threads, and which are rather closely spaced and are 

 considerably more pronounced at the summit than on the rest of the 

 turn. The spiral sculpture consists of low, rounded threads, which 

 vary considerably in strength in the different races. Suture strongly 

 constricted. Periphery inflated, strongly rounded. Base short, in- 

 flated, strongly rounded, marked by the continuation of the axial ribs 

 and by spiral threads, which are considerably stronger here than are 

 those on the spire. Base umbilicated ; umbilicus partly covered by the 

 reflected outer peristome of the inner and parietal lip. Last whorl 

 decidedly solute. Aperture circular; peristome double, the inner 

 moderately exserted and slightly reflected; the outer moderately 

 broadly expanded, considerably wider on the posterior half of the 

 inner lip than the rest. Operculum typically annularid. 



This species is confined to Pinar del Rio Province, and it breaks up 

 there into several races, which are defined in the following key and 

 descriptions: 



KEY TO THE SUBSPECIES OF ANNULARIA (ANNULAROPS) SAUVALLEI 



Shell white. 



Axial ribs rather strong and coarse cortinai 



Axial ribs not strong or coarse. 



Axial ribs slender and fine sauvallei 



Axial ribs exceedingly fine and slender chorrerensis 



Shell pale orange natensoni 



ANNULARIA (ANNULAROPS) SAUVALLEI CORTINAI. new subspecies 



Plate 30, Figure 6 



This race comes from the south and the west sides of the Sierra de 

 Guira. We have also seen it from the Abra de Caiguanabo. It is 

 more slender than the others. 



The type, U.S.N.M. No. 493450, has 82 ribs on the first whorl and 

 175 on the last turn. These riblets are stronger than in the other 

 three white races, and they are also rendered somewhat sinuous by 

 the spiral threads. The type has 3.9 whorls remaining and measures: 

 Length, 10.6 mm.; greater diameter, 6.7 mm.; lesser diameter, 5.5 mm. 



223580 — 40 11 



