CUBAN ANNUDAKIIDAE — TORRE AND BART&CH 259 



last portion of the last whorl showing the beginning of the postnuclear 

 sculpture. The first two postnuclear whorls are very solutely coiled, 

 the first one being marked by distantly spaced, wavy axial riblets; 

 the rest, which are inflated and strongly rounded, are marked by 

 sinuous, almost vertical axial ribs, which on the last whorl are a little 

 narrower than the spaces that separate them. Some of the axial 

 riblets are expanded into hollow auricles at the summit. The inter- 

 costal spaces are marked by numerous, somewhat irregularly spaced, 

 fine spiral lirations, which vary much in strength in the dift'erent 

 subspecies. Suture strongly constricted. Periphery inflated, strongly 

 rounded. Base short, inflated, strongly rounded, narrowly, openly 

 umbilicated, marked by the continuation of the wavy axial riblets. 

 Last whorl solute for a fraction of a turn. The umbilical wall is 

 marked by the continuation of the axial riblets and by spiral threads, 

 which vary in strength and number in the different races; the junctions 

 of the axial ribs and spiral cords form nodules or scaUops. Aperture 

 circular; peristome double, the inner slightly exserted above the 

 outer; the outer very narrowly expanded. Operculum typically 

 ramsdenid. 



This species comes from Oriente Province, where it breaks up into 

 the following subspecies: 



KEY TO THE SUBSPECIES OP TUDORA (RAMSDENIA) NOBILITATA 



Spiral lirations on spire conspicuous. 



Spiral cords on the umbilical wall few and strong nobilitata 



Spiral cords on the umbilical wall many and weak mirandensis 



Spiral lirations on spire inconspicuous 



Spiral cords on the umbilical wall strong mirifica 



Spiral cords on the umbilical wall not strong. 



Shell small and slender yaterasensis 



Shell large and stout raayariensis 



TUDOKA (RAMSDENIA) NOBILITATA NOBILITATA ([Gundlach] Poey) 



Plate 24, Figures 5, 8 



1858. Cyclostoma nobilitatum [Gundlach] Poet, Memorias sobre la historia natural 



de la isla de Cuba, vol. 2, p. 87. 

 1862. Ctenopoma nobilitatum Pfeiffer, Malakozool. Blatter, vol. 9, p. 3. 

 1920. Ramsdenia nobilitatum Henderson and Bartsch, Proc. U. S. Nat. Mus. 

 vol. 58, p. 79. 



The typical subspecies was collected by Gundlach at Enramadas 

 (San Luis), northof Santiago, Oriente Province. 



It is a small race in which the spiral lirations are conspicuous and 

 the auricles at the summit interlock with denticles projecting down- 

 ward from the periphery. The specimen, U.S.N.M. No. 355666, 

 which has served for our description and figure, is a paratype collected 

 by Gundlach at the type locality. It has 3 whorls remaining, which 



223580—40 9 



