CUBAN ANNULARiroAE TORRE AND BARTSCH 361 



KEY TO THE SUBSPECIES OF ANNULARIA (LUGARENIA) EURYSTOMA 



Posterior half of inner lip broadly expanded eurystoma 



Posterior half of inner lip not broadly expanded chorrillensis 



ANNULARIA (LUGARENIA) EURYSTOMA EURYSTOMA, new subspecies 



Plate 47, Figure 6 



This subspecies comes from the Sierra del Cachimbo, which lies 

 between the Sierra del Chorrillo and Sierra de Najaza, in Camagiiey 

 Province. 



It is easily differentiated from A. (L.) eurystoma chorrillensis by 

 having the posterior portion of the outer lip of the outer peristome 

 broadly expanded . It is also much larger. 



The type, U.S.N.M. No. 493497, has 5.4 whorls and measures: 

 Length, 13.5 mm.; greater diameter, 12.3 mm.; lesser diameter, 

 9.6 mm. 



ANNULARIA (LUGARENIA) EURYSTOMA CHORRILLENSIS. new subspecies 



Plate 47, Figure 2 



This subspecies comes from the Vereda del Telegrafo, which crosses 

 the Sierra del Chorrillo. 



It is easily distinguished from A. (L.) eurystoma eurystoma by being 

 smaller and by having the posterior half of the inner lip not broadly 

 expanded. It also has the inner peristome much more exserted, 

 forming a shelf at the posterior angle, at which the outer peristome is 

 slightly auriculate. 



The type, U.S.N.M. No. 493499, has 5.4 whorls and measures: 

 Length, 10.8 mm. ; greater diameter, 9.7 mm. ; lesser diameter, 7.7 mm. 



ANNULARIA aUGARENIA) BIAYENSIS, new species 



Plate 47, Figure 3 



Shell of turbinate outline, thin, pale j^-ellow, with slender interrupted 

 spiral bands of brown, of which 3 are present on the spire and 3 are 

 on the base. There is also a dark spot in the suture of the nuclear 

 tip. Nuclear whorls very strongly inflated, rounded, microscopi- 

 cally granulose. Pc^stnuclear whorls strongly rounded, marked by 

 decidedly retractively curved axial ribs, which are crenulated at the 

 summit. In addition to the crenulations there is a second row of 

 nodules a little anterior to the summit. The axial ribs are slender, 

 narrow, and well elevated, and about one-fifth as wide as the spaces 

 that separate them. Suture channeled. Periphery well rounded. 

 Base moderately long, well roimded, openly umbilicated, marked like 

 the spire on the posterior two-thirds. On the anterior third 4 strong 

 spiral threads are present, of which the fourth marks the edge of the 



