CUBAN ANNULARIIDAE — TORRE AND BARTSCH 373 



This species was listed by Arango as cited above, with the statement 

 that it would be pubhshed soon by Pfeiffer. PfeifFer states under 

 Cyclostomus romeri that the specimens sent him by Arango from 

 Barigua are scarcely varietally distinguishable from typical C. romeri. 

 We disagree with this statement. We consider it a valid species, 

 which we describe. 



ANNULARIA (ANNULARELLA) PSEUDALATA (Torre) Pilsbry and Henderson 



Plate 51, Figures 1-3 



1865. Cistula alatum Pfeiffer, Monographia pneumonopomorum viventium, 

 suppl. 2, p. 110, in part. 



1912. Annularia pseudolatum (Torre) Pilsbry and Henderson, Nautilus, vol. 26, 



pp. 43-44. 



1913, Annularia pseudolatum Torre, Nautilus, vol. 27, p. 37, pi. 3, figs. 8, 9. 

 1920. Annularia (Annularella) pseudalatum Henderson and Bartsch, Proc. 



U. S. Nat. Mus., vol. 58, p. 73. 



Shell helicoid, flesh colored, with a yellowish tinge. Nuclear whorls 

 almost 2, well rounded, smooth. Postnuclear whorls increasing very 

 rapidly in size, inflated, strongly rounded, marked on the first turn 

 by 22 slender, retractively curved, axial riblets; on the remaining 

 turns the axial ribs' become differentiated into two types, namely, 

 strong sublamellar elements between which finer threads varying 

 from 2 to 5 in number are present; of the stronger riblets, 72 are 

 present on the second, with 99 upon the last turn. Suture strongly 

 constricted. Periphery inflated, well rounded. Base short, inflated, 

 strongly rounded, very openly umbilicated, the umbilicus being almost 

 funnellike, marked by the continuation of the axial riblets, which 

 extend into the umbilicus, and 3 spiral threads near the umbilicus, of 

 which the one marking the junction of the umbilicus and the base is 

 the strongest. On the umbilical wall 14 additional spiral threads, 

 which are of almost the same strength, are present. Aperture broadly 

 ovate; peristome double, the inner coextensive with the outer except 

 at the auricle, where the two become differentiated ; the outer moder- 

 ately broadly expanded; the auricle at the posterior angle is adnate to 

 the preceding turn. Operculum typically annularid. 



The specimen described and figured, U.S.N.M. No. 11052, was 

 collected by C. Wright between Demajagua and Guantanamo, Oriente 

 Province. It has 4.6 whorls and measures: Length, 11.2 mm.; 

 greater diameter, 14.9 mm.; lesser diameter, 11.4 mm. 



ANNULARIA (ANNULARELLA) HOLGUINENSIS, new species 



Plate 52, Figures 1-3 



1865. Choanopoma alatum Pfeiffer, Monographia pneumonopomorum viventium, 



suppl. 2, p. 110 in part. 

 1878. Choanopoma alatum Arango, Contribucion a la fauna malacologica Cubana, 



pp. 13-14 in part. 

 1890. Choanopoma alatum Crosse, Journ. Conchyl., vol. 38, p. 273 in part. 



