364 PROCEEDINGS OF THE NATIONAL MUSEUM Vol.89 



ANNULARIA (LUGARENIA) URATA PARVA. new subspecies 



Plate 47, Figure 5 



This subspecies comes from La Caridad de Guerrero, Sierra de 

 Guaicanamar. 



It is readily distinguished from A. (L.) lirata lirata by its smaller 

 size and by its less strongly developed nodulation and spiral sculpture 

 in the umbilicus. 



The type, U.S.N.M. No. 493509, has 5.7 whorls and measures: 

 Length, 11.2 mm. ; greater diameter, 8.3 mm. ; lesser diameter, 6.8 mm. 



ANNULARIA (LUGARENIA) SIFONTESI, new species 



Plate 47, Figure 4 



Shell turbinate, pale yellow, with or without a dark band imme- 

 diately below the summit. Nuclear whorls 2, well rounded, micro- 

 scopically grauulose. Postnuclear whorls inflated, strongly rounded, 

 appressed at the summit, and marked by retractively curved, almost 

 lamellar axial riblets, which are rather distantly spaced. These riblets 

 are rendered feebly nodulose by obsolete spiral threads. Suture 

 strongly constricted. Periphery inflated, strongly rounded. Base 

 moderately long, very broadly, openly umbilicated, marked by the 

 continuation of the axial ribs and near the umbilicus by 3 spiral 

 threads. Within the umbUicus 14 spiral threads are present which 

 render the axial ribs finely nodulose. The last whorl is solute for 

 about one-tenth of a turn. Aperture broadly oval; peristome double, 

 the inner reflected and appressed to the outer; the outer moderately, 

 broadly expanded, forming somewhat of a hood at the posterior angle. 

 Operculum typically lugarenid. 



The type, U.S.N.M. No. 493511, was collected by Pablo Sifontes, 

 for whom it is named, in the Sierra del Cachimbo between Sierra de 

 Najaza and El Chorrillo. It has 5.5 whorls and measures: Length, 

 10.9 mm.; greater diameter, 8.9 mm.; lesser diameter, 7.5 mm. 



Subgenus Annularosa Henderson and Bartsch 



1920. Annularosa Henderson and Bartsch, Proc. U. S. Nat. Mus., vol. 58, 

 p. 72. 



Shell turbinate, umbilicated. The early postnuclear whorls with 

 faint axial riblets, which become obsolete on the last turn. Base 

 malleated, the main axis of the malleations being placed in such a 

 regular manner as to suggest spiral threads. A strong spiral keel 

 marks the boundary between the umbilical wall and the base. The 

 umbilical wall is marked by a few spiral threads. Operculum typi- 

 cally annularid. 



Type: Annularia {Annularosa) Jragilis ([Gundlach] Pfeiffer). 



