CUBAN ANNUIjARUDAE — TORRE AND BART&CH 297 



1920. Annularia (Annularops) sordiditrn Henderson and Bartsch, Proc. U. S. 



Nat. Mus., vol. 58, p. 74. 

 1934. Annularia spurca Aguayo, Mem. Soc. Cubana Hist. Nat. Felipe Poey, vol. 

 8, p. 89. 



Cyclostoma sordidum (Gundlach) Pfeiffer was, unfortunately, 

 preoccupied by Pfeiffer's earlier name, as set forth in the above 

 synonymy. This was discovered by Aguayo, who substituted 

 Annularia spurca for it. Gundlach says that his species comes from 

 the mountains near San Diego de los Banos. We have it from the 

 mogotes on both sides of the river north to La Catalina. 



The shells of this subspecies are a little larger than those of A. {A.) 

 coronadoi acervata and they have the axial ribs less strongly developed 

 and less projecting above the suture at the summit. The specimen 

 figured, U.S.N.M. No. 493465, is from the mogote at Cuatro Caminos. 

 It has 3.9 whorls remaining and measures: Length, 11.0 mm.; greater 

 diameter, 6.3 mm.; lesser diameter, 5.4 mm. 



ANNULARIA (ANNULAROPS) ATTENUATA, new epccics 



Shell very elongate-ovate, ranging from pinkish to rose-colored, the 

 early whorls being always more intensely colored than the rest; the 

 interior of the aperture and peristome varies from flesh color to pale 

 red in the different subspecies. Nuclear whorls 2, small, well rounded, 

 microscopically granulose. Postnuclear whorls well rounded, marked 

 by sublamellar, retractively slanting, wavy axial riblets, which vary 

 much in strength and spacing in the different races. The axial riblets 

 are slightly exserted at the summit, where they project in varying 

 degrees. The spiral sculpture, while pronounced, also varies much 

 in strength in the different subspecies. The junctions of the spiral 

 threads with the axial riblets render these slightly wavy and feebly 

 nodulose. Suture strongly constricted. Periphery inflated, strongly 

 rounded. Base moderately long, inflated, strongly rounded, marked 

 by the continuation of the axial ribs and by the spiral threads, which 

 are much stronger than those on the spire, and which render the riblets 

 nodulose. Aperture circular; peristome double, the imier slightly 

 exserted; the outer broadly expanded, decidedly more so, however, 

 on the inner and parietal wall than on the rest, marked by a series of 

 concentric lamina, and deeply notched on the middle of the inner lip. 

 Posterior to the notch the peristome is reflected over the umbilicus, 

 which it covers with a broad callus. Operculum typically annularid. 



KEY TO THE SUBSPECIES OF ANNULARIA (ANNULAROPS) ATTENUATA 



Interior of aperture and peristome reddish minaensis 



Interior of aperture and peristome white. 



Axial ribs coarse morsei 



Axial ribs fine ~ attenuata 



