CUBAN ANNULAEiroAE — TORRE AND BART&CH 301 



between the summit and suture. Suture strongly constricted. Periph- 

 ery strongly rounded. Base short, strongly rounded, marked by 

 the continuation of the axial riblets and by 5 spiral threads in A. (A.) 

 tryoni tryoni and 8 in ^. (A.) tryoni vinalensis , which are a little 

 stronger than those on the spire; within the umbilicus 4 additional 

 spiral threads are apparent. Aperture circular; peristome double, 

 the inner moderately exserted; the outer rather broadly, flaringly ex- 

 panded, a little wider on the parietal wall than on the rest, slightly 

 notched in the middle of the inner lip, but not reflected to cover the 

 umbilicus posterior to the notch, and marked by concentric lines of 

 growth. Umbilicus open. Operculum typically annularid. 



KEY TO THE SUBSPECIES OF ANNULARIA (ANNULAROPS) TRYONI 



Spiral sculpture feeble tryoni 



Spiral sculpture not feeble vinalensis 



ANNULARIA (ANNULAROPS) TRYONI TRYONI (Arango) 



Plate 32, Figure 9 



1879. Ctenopoma tryoni Arango, Contribucion a la fauna malacologica Cubana, 



p. 173. 

 1898. Choanopoma tryoni Kobelt and Mollendorff, Nachr. Deutsch. Malak. 



Ges., vol. 30, p. 183. 

 1920. Annularia {Annularops) tryoni Henderson and Bartsch, Proc. U. S. 



Nat. Museum, vol. 58, p. 74. 



The type of this species, U.S.N.M. No. 356163, which we have de- 

 scribed and figured, was collected at Bebedero, Pinar del Rio. We 

 have collected it abundantly on the Mogotes del Cerro de Cabras, 

 at Kilometer 14, on the road between Pinar del Rio and Luis Lazo, 

 which was the ancient watering place (called Bebedero). 



It is distinguished from A. {A.) tryoni vinalensis by being a little 

 more slender and by having the spiral sculpture only very feebly 

 developed. The type has a little more than 3 whorls remaining and 

 measures: Length, 7.5 mm.; greater diameter, 5.8 mm.; lesser diam- 

 eter, 4.3 mm. 



ANNULARIA (ANNULAROPS) TRYONI VINALENSIS. new subspecies 



Plate 32, Figure 7 



We have seen this race from the Sierra de Viiiales, mogotes de la 

 Chorrera, and the type locality El Cuajani, the east end of the Sierra 

 del Infierno. 



It differs from typical A. {A.) tryoni tryoni in being a little less 

 elongate-ovate, in having the spiral threads more strongly developed, 

 and in rib count. 



The type, U.S.N.M. No. 356160, has 3 whorls remaining and 

 measures: Length, 8.0 mm.; greater diameter, 6.0 mm.; lesser 

 diameter, 4.7 mm. 



