134 



BULLETIN 192, UNITED STATES NATIONAL MUSEUM 



it may be unicolor or variously banded with interrupted or almost con- 

 tinuous spiral bands of brown. Nuclear whorls about 2, well rounded, 

 microscopically granulose, forming a small apex. The postnuclear whorls 

 vary considerably in the amount of rotundity and also in the degree of 

 shouldering at the summit. They are enormously variable in the number 

 of axial ribs and in their development, which varies from depressed- 

 rounded to acutely lamellar. The last whorl may be adnate or solute, and 

 the size of the umbilicus varies with that characteristic. The umbilical 

 wall bears threads of varying number as the table will show. In the 10 

 specimens selected they vary from three to seven. The aperture is 

 oval ; the peristome is double, the outer appressed at the junction of the 

 inner and basal lip and at the auricle at the posterior angle, narrowest 

 on the parietal wall. Operculum typically sallepomid. 

 I am figuring the 10 specimens referred to above. 



» Type. 



The type (U.S.N.M. No. 504066), selected from a series of 715 topo- 

 types (U.S.N.M. No. 402598), from the same source, comes from near 

 the sea at the first hill east of Saltrou, Haiti, and is No. 2 of the accom- 

 panying table. 



U.S.N.M. No. 402440 contains 34 specimens collected by Orcutt at 

 the cliflFs by the sea east of Saltrou. 



U.S.N.M. No. 402571 contains 8 specimens collected by Orcutt east 

 of Saltrou. 



U.S.N.M. No. 402034 contains 43 specimens collected by Orcutt on 

 the plain north of Saltrou. 



U.S.N.M. No. 402100 contains 11 specimens collected by Orcutt be- 

 tween Bodarie and Saltrou. 



U.S.N.M. No. 402628 contains 3 specimens collected by Orcutt at 

 Gimbi River near Saltrou. 



U.S.N.M. No. 401995 contains 6 specimens collected by Orcutt on the 

 east side of Gimbi River. 



I have excluded this species from the key, for under the name Sal- 



