CUBAN ANNULAEITDAE TORRE ANTV BAETSCH 347 



Guantanamo and Eam6n de las Yaguas, 9 leagues from the former and 

 4 leagues from the latter. It has 4.4 whorls remaining and measures: 

 Length, 7.5 mm.; greater diameter, 17.9 mm.; lesser diameter, 13.6 

 mm. The species can at once be differentiated from A. (A.) eburnea 

 by the brown coloration of the interior of the aperture, and by the 

 heavier and more pronounced axial ribs. 



ANNULARIA (ANNULARISCA) ABERRANS, new species 



Plate 41, Figures 1-3 



Shell helicoid, bright straw yellow, marked with diaphanous whitish 

 spots and more or less zigzag or vermiculated Imes of brown, much 

 paler on the under side than on the upper; the peristome is white; 

 the mterior of the aperture is orange. Nuclear whorls 1.5, well 

 rounded, smooth, except for the last portion of the last turn, which 

 shows the beginning of the postnuclear sculpture. Postnuclear wiiorls 

 inflated, strongly roimded, marked by strongly, retractively slanting 

 narrow, almost sharp axial riblets, which on the early whorls are 

 about as wide as the spaces that separate them. On the last turn 

 they are a little closer spaced; at irregular intervals these riblets 

 become enfeebled and more closely grouped, indicating restmg stages. 

 The intercostal spaces under high magnification show incised spiral 

 lines, wliich are irregularly developed and disposed. Suture strongly 

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

 rounded, openly umbihcated, marked by the continuation of the 

 axial ribs and by incised spiral lines. On the umbilical wall the axial 

 ribs become closely approximated; here, also, 12 raised spiral threads 

 are present, which render the riblets feebly nodulose. Aperture 

 subcircular; peristome double, the outer and uiner fused except for 

 an indication of separation at the posterior angle. Operculum t3^pi- 

 cally annularid. 



The type, U.S.N.M. No. 25100, was collected by C. Wright at Monte 

 Verde, northeast of Guantanamo, Oriente Province. It has a little 

 over 3 whorls and measures: Length, 10.4 mm.; greater diameter, 14.9 

 mm.; lesser diameter, 11.8 mm. 



ANNULARIA (ANNULARISCA) AURICOMA ([Gnndlach] Pfeiffer) 



Shell depressed-heUcoid, flesh colored, marked with hydrophanous 

 spots, which sometimes give to the siu-face of the shell a painted or 

 vermiculated, blotched or spotted appearance; the early whorls are 

 usually a little darker than the rest, while the base is usually paler 

 than the upper half; the peristome is white and the interior of the 

 aperture is orange, densest at the junction of the wliite zone of the 

 peristome and of the colored interior. Nuclear whorls almost 2, 

 well rounded, smooth, except for the last portion of the last turn, 



