CUBAN ANNULARIIDAE — TORRE AND BARTSCH 319 



The last whorl is solute for one-fifth of a turn, the posterior angle of 

 the solute portion is not conspicuously denticulate. Aperture broadly- 

 oval; peristome double, the inner slightly exserted; the outer broadly 

 expanded on the outer and inner lip, less so on the parietal wall. Oper- 

 culum typically diplopomid. 



The type, U.S.N.M. No. 535638, was collected by Dr. Ramsden 

 at Vereda de Mata Yeguas, Sierra de Bucuey, Oriente Province. It 

 has 4.7 whorls remaining and measures: Length, 13.8 mm.; greater 

 diameter, 7.0 mm; lesser diameter, 5.5 mm. 



The absence of tufting at the summit, the broadly expanded outer 

 lip, stronger axial ribs and obsolete spiral sculpture will differentiate 

 this from the other species. 



ANNULARIA (DIPLOPOMA) SONGOENSIS. new species 



Plate 35, Figure 5 



Shell elongate-ovate, pale brown, with the early whorls chestnut- 

 brown. Nuclear whorls decollated in all our specimens. Post- 

 nuclear whorls strongly rounded, marked by slender, sinuous, sub- 

 lamellar axial ribs, which are expanded at the summit but which 

 do not form tufts. Of these, 48 occur on the fu"st of the remaining 

 turns, 61 on the second, 126 on the third, and 122 are on the last. In 

 addition to this, the whorls are marked by fine spiral threads, which 

 render the axial ribs sinuous. These are absent on the first of the 

 remaining turns, 5 are present on the second, 8 on the third, and 9 on 

 the last betw^een summit and suture. Suture well constricted. Periph- 

 ery well rounded. Base narrowly, openly umbihcated, marked by 

 the continuation of the axial ribs and by 6 spiral threads. Nine addi- 

 tional thi'eads, stronger than those on the base, are present on the 

 outer two-thirds of the umbihcal wall. The last whorl is solute for 

 about one-fourth of a turn. The posterior angle, while carinated, is 

 not marked by conspicuous auricles. Aperture broadly oval; peri- 

 stome double, the inner rather strongly exserted and shghtly reflected; 

 the outer broadly expanded except on the parietal wall, where it is a 

 httle narrower, forming a feeble auricle at the posterior angle, fluted 

 and marked by concentric laminae. Operculum typically diplopomid. 



The type, U.S.N.M. No. 535639, was collected by Dr. Ramsden at 

 Florida Blanca near Alto Songo, Oriente Province. It has 4.8 whorls 

 remaining and measures: Length, 12.0 mm. ; greater diameter, 6.6 mm. ; 

 lesser diameter, 5.3 mm. 



This species belongs to the group without tufts at the summit and 

 it is distinguished from the other members of the same group by its 

 comparatively strong axial and spiral sculpture. 



We have seen additional specimens also collected by Dr. Ramsden 

 at La Lechuza between Ajenjibre and Joturos, Oriente Province. 



