156 BULLETIN 192, UNITED STATES NATIONAL MUSEUM 



Strongly rounded, forming a well-elevated apex. Postnuclear whorls 

 marked by sublamellar axial ribs, the early ones showing feeble nodula- 

 tions. Of these axial ribs 115 are present on the last whorl of the type. 

 There are no indications of spiral threads in the spaces between the axial 

 ribs or on the umbilical wall. 



The type (U.S.N.M. No. 504134), which was collected by C. R. Orcutt 

 on the estate of the Haitian American Sugar Co., north of Port-au- 

 Prince, Haiti, has lost the early whorls. The 3.8 remaining measure : 

 Height, 1 1.6 mm.; greater diameter, 9.5 mm.; lesser diameter, 7.8 mm. 



U.S.N.M. No. 403000 contains 2 topotypes, one of which, a not quite 

 mature specimen with perfect nucleus, has 5.6 whorls and measures: 

 Height, 1 1.4 mm.; greater diameter, 9.1 mm.; lesser diameter, 7.9 mm. 



The feeble nodulation, larger size, and stronger coloration will readily 

 distinguish this species from Eycrdamia eycrdami. 



EYERD.4MIA EYEBDAMI, new species 



Plate 28, Figure 11 



Shell of turbinid outline, thin, semitranslucent, flesh-colored, with in- 

 terrupted, distantly spaced, spiral dots of brown, arranged also in axial 

 series. Nuclear whorls 2, inflated, well rounded, microscopically granu- 

 losa Postnuclear whorls very strongly inflated and rounded and marked 

 by very regular, slender, sublamellar axial ribs, of which 109 are present 

 on the last turn. Suture strongly constricted. Periphery inflated, well 

 rounded. Base short, inflated, strongly rounded, openly umbilicated, and 

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

 umbilical wall. There is no indication of spiral sculpture anywhere, even 

 on the umbilical wall. Umbilicus moderately broadly open. Aperture 

 almost circular ; peristome double, the inner slightly exserted and re- 

 flected; the outer broadly evenly expanded and marked by concentric 

 lines of growth. Operculum with central nucleus and slender, well 

 elevated, obliquely flaring lamella, which leaves broad spaces in the inter- 

 val between its turns. 



The type (U.S.N.M. No. 504133) was collected by W. J. Eyerdam 

 at the base of clififs under debris at Pestel, Haiti. It has 5.5 whorls and 

 measures: Height, 9.3 mm.; greater diameter, lo.o mm.; lesser diameter, 

 6.7 mm. 



U.S.N.M. No. 380331 contains 17 topotypes. 



This species can easily be separated from Eycrdamia princesa by its 

 smaller size and the absence of indication of nodules on the ribs. 



WEINLANDIPOMA, new genus 



Small annulariid shells having an elongate-ovate or ovate outline. The 

 whorls are marked by sublamellar axial ribs, which become expanded 

 into auricles at the summit. These ribs may be straight or decidedly 

 wavy, or even scalloped. The spaces between the axial ribs are marked 



