CUBAN ANNULARIIDAE TORRE AND BAR,TSCH 171 



palmeri camajanense in having the axial ribs well developed on the 

 last whorl. 



The type, U.S.N.M. No. 535436, was collected by Dr. Bermudez 

 at Guainabo, Yaguajay. It has almost 4 whorls remaining and 

 measures: Length, 13.4 mm.; greater diameter, 7.3, mm; lesser 

 diameter, 6.0 mm. 



OPISTHOSIPHON (BERMUDEZSIPHONA) PALMERI CAMAJANENSE, new subspecies 



Plate 12, Figure 1 



Tliis subspecies differs from typical 0. (B,) palmeri palmeri in having 

 the axial sculpture reduced to almost the vanishing point on the later 

 tm-ns, and in having the denticles at the summit much stronger. 

 It was collected by Bermudez at Camajan, Yaguajay, Santa Clara 

 Province. 



The type, U.S.N.M. No. 535439, has 3.8 whorls remaining and 

 measures: Length, 15.0 mm.; greater diameter, 8.2 mm.; lesser 

 diameter, 6.8 mm. 



This subspecies varies greatly in size, as does the typical species; the 

 smallest specimen before us has 3.7 whorls remaining and measures: 

 Length, 11.0 mm.; greater diameter, 6.7 mm,; lesser diameter, 5.6 mm. 



OPISTHOSIPHON (BERMUDEZSIPHONA) GREENFIELDI, new species 



Plate 12, Figure 11 



Shell broadly ovate, ranging from flesh colored to pale yellow to 

 chestnut-brown, unicolor, or with a parietal band of darker brown. 

 Nuclear whorls 2, mflated, strongly rounded, microscopically granu- 

 lose, forming an ahnost cylindric truncated apex. The initial part 

 of the nuclear turns is browTU, the rest white. Postnuclear whorls 

 inflated, strongly rounded, marked by slightly retractively slanting 

 sublamellar axial ribs, which are more distantly spaced on the early 

 turns than on the later whorls. At irregular intervals these ribs 

 form hoUow cusps ^t the summit. The spaces between the axial 

 ribs are marked by microscopic axial threads. Of the axial ribs 86 

 are present on the last whorl in the type. Sutm'e strongly constricted. 

 Periphery inflated, strongly rounded. Base short, inflated, strongly 

 rounded, marked by the continuation of the axial ribs, which extend 

 undimmished to the umbilicus. The outside of the closed umbilicus 

 is marked by 4 spiral cords, which render the axial ribs strongly 

 scalloped at their junctions. Aperture broadly oval ; peristome double, 

 the inner slightly expanded, reflected and appressed to the outer; 

 the outer broadly expanded, forming a decided auricle at the posterior 

 angle, deeply notched on the middle of the inner lip. Posterior to 

 the notch the outer peristome is reflected over the mnbilicus, which 

 it completely covers. It also extends as a broad flap adnate to the 



