CUBAN" ANNULARIIDAE — ^TORRE AND BARTS'CH 303 



ANNULARIA (ANNULARODELLA) MORENOI, new species 



Plate 33, Figtjee 7 



Shell very broadly ovate, almost turbinate, of pale straw color, the 

 ground color marked by interrupted spiral bands of brown. Peri- 

 stome pale yellow, the outer rayed. The early nuclear whorls have 

 the suture chestnut brown and a diffusion of this color extends to 

 adjacent parts. Nuclear whorls 2, inflated, strongly rounded, micro- 

 scopically granulose, forming a somewhat blunt apex. Postnuclear 

 whorls strongly inflated and strongly rounded, and marked by subla- 

 mellar, retractively curved, rather distantly spaced axial ribs, of 

 which 24 occur on the first of the remaining turns, which is probably 

 the first postnuclear turn, and 90 on the last whorl. These riblets 

 become slightly expanded at the summit, where they form feeble den- 

 ticles. Sometimes a second row of small nodules appears immediately 

 below the summit. Suture strongly constricted. Periphery very 

 strongly inflated, well rounded. Base short, inflated, strongly rounded, 

 and widely openly umbilicated, marked by the continuation of the 

 axial ribs and by about 16 spiral threads on the umbilical wall, which 

 render the axial riblets slightly nodulose at their junction: Aperture 

 subcircular; peristome double, the inner moderately cxserted and 

 strongly reflected, fusing on the outer lip with the outer; the outer 

 peristome strongly expanded on the inner and parietal wall, adnate 

 to the preceding turn at the parietal wall, a little less so on the basal 

 wall and even less on the outer lip, marked by concentric laminae, 

 and forming a moderately strong auricle at the posterior angle. There 

 is a breathing puncture at the posterior angle of the aperture. Oper- 

 culum typically annularid. 



The type, U.S.N.M. No. 535633, comes from Ayongo, Las Jumaguas, 

 Sagua, Santa Clara Province. It has 4.1 whorls remaining and meas- 

 ures: Length, 10.5 mm.; greater diameter, 7.9 mm.; lesser diameter, 

 5.8 mm. 



Subgenus Eutudora Henderson and Bartsch 

 1920. Eutudora Henderson and Bautsch, Proc. U. S. Nat. Mus., vol. 58, p. 78. 



Shell varying from broadly ovate to turbinate in form. Spiral 

 sculpture much stronger than the axial. A breathing pore is present 

 in the parietal wall a little distance from the posterior angle of the 

 aperture. 



Operculum with the lamella reflected to parallel the chondroid basal 

 plate, but not reaching to the outer edge of the whorls, thus leaving a 

 narrow channel of the basal chondroid plate visible at the outer edge 

 of the whorls. 



Type: Annularia {Eutudora) limbifera ([Menke] Pfeiffer). 



