CUBAN ANNUDARIIDAE TORRE AND BARTSCH 279 



The specimen described and figured, U.S.N.M, No. 356383, is one of 

 two collected by Gundlach. It has 3.8 whorls and measures; Length, 

 7.3 mm.; greater diameter, 4.5 mm.; lesser diameter, 3.5 mm. 



This race is most nearly related to typical Tudora (Wrightudora) 

 garridoiana garridoiana, from which it differs by having the axial 

 riblets much stronger and fewer in number. 



TUDORA (WRIGHTUDORA) GARRIDOIANA ([Gundlach] Pfeiffer) 



Shell elongate-conic, pale straw colored. Nuclear whorls decollated 

 in all our specimens. Postnuclear whorls inflated, strongly rounded, 

 marked by slightly retractively slanting, sublamellar, hollow riblets. 

 These riblets are gathered into groups, several stronger lamellae being 

 replaced by a number of weaker axial threads. These lamellae are 

 developed into auricles at the summit and at the periphery. On 

 adjacent whorls they frequently meet. The spiral sculpture consists 

 of poorly developed threads, which are frequently merely indicated. 

 Suture strongly constricted. Periphery well rounded. Base mod- 

 erately long, well rounded, marked by the continuation of the axial 

 sculpture and by indications of obsolete spiral threads. A strong 

 spiral cord marks the j miction of the base with the umbilical wall. 

 The umbilical wall is marked by the feeble continuation of the axial 

 riblets and spiral threads. Last whorl solute for a fraction of a turn. 

 Aperture subcircular; peristome double, the inner moderately exserted 

 and slightly reflected; the outer moderately broadly expanded, some- 

 what wavy, developed into an almost clawlike element at the posterior 

 angle, and marked by a series of slender concentric lamellae. Oper- 

 culum typically tudorid. 



This species comes from the region of Baracoa, Oriente Province, 

 where it breaks up into two races as follows: 



KEY TO THE SUBSPECIES OF TUDORA (WRIGHTUDORA) GARRIDOIANA 



Inner lip of outer peristome rather wide haracoensis 



Inner lip of outer peristome not wide garridoiana 



TUDORA (WRIGHTUDORA) GARRIDOIANA BARACOENSIS, new subspecies 



Plate 28, Figure 5 



This race comes from Baracoa. It can be distinguished from 

 T. (W.) garridoiana garridoiana in being a little more slender and in 

 having the outer peristome of the inner lip much more expanded and 

 more strongly fluted. 



The type, U.S.N.M. No. 356382, has 4.2 whoris remammg and 

 measures: Length, 8.3 mm.; greater diameter, 5.2 mm.; lesser diam- 

 eter, 3.8 mm. 



