50 BULLETIN 192, UNITED STATES NATIONAL MUSEUM 



CHONDKOPOMA (L,INDENIPOMA) LINDENIANUM Welnland 



Shell elongate-conic, flesh-colored, marked with irregular, interrupted 

 bands of brown arranged both in axial and spiral series, the markings 

 at the summit and those on the base assuming a little stronger aspect 

 than the rest. There is a brown zone on the middle of the inner lip. The 

 nuclear whorls form a somewhat blunt mammillated apex ; the first turn 

 is smooth and well rounded, the rest of the nuclear spire is marked 

 by slender axial riblets. Postnuclear whorls well rounded, with the 

 summit almost appressed and marked by strong, somewhat retractively 

 slanting axial riblets, which extend prominently from the summit, where 

 occasionally they become slightly expanded over the periphery into the 

 umbilicus. These riblets are rendered feebly wavy by obsolete spiral 

 threads. Suture moderately constricted. The base is well rounded, moder- 

 ately openly umbilicated, and marked by the continuation of the axial 

 ribs and several strong spiral cords within the umbilicus. The last whorl 

 is slightly solute immediately behind the peristome. Aperture broadly 

 oval ; posterior angle obtuse. Peristome simple ; outer and basal lip 

 slightly expanded and somewhat reflected; the inner and parietal wall 

 not expanded. The operculum is thin, corneous, paucispiral, with the 

 nucleus halfway between submarginal and subcentral. 



This species breaks up into three races as follows: 



KEY TO THE SUBSPECIES OF CHONDROPOMA (LINDENIPOMA) LINDENIANUM 



Axial ribs rather distantly spaced lindenianum 



Axial ribs not distantly spaced. 



Last whorl rather long manni 



Last whorl rather short goanni 



CHONDBOPOMA (LLNDENIPOMA) LINDENIAJVUM I.INDENIANUM Weinland 



Plate 9, Figure 3 

 1880. Chondropoma Lindenianum Weinland, Jahrb. deutschen malak. Ges., vol. 

 7, pp. 344-345. 



This race centers about Port-au-Prince, extending somewhat west, 

 east, and south thereof. Its southern limitation appears to be Petion- 

 ville. It is readily distinguished from the other two subspecies here 

 recognized by having the axial riblets much more distantly spaced than 

 those and in also being somewhat more slender. 



The specimen described and figured (U.S.N.M. No. 354986) is one 

 of 14 taken from the woods near Port-au-Prince. It is a perfect in- 

 dividual having 7.4 whorls and measures: Length, 16 mm.; greater 

 diameter, y.y mm. ; lesser diameter, 6.4 mm. 



U.S.N.M. No. 162926 contains 24 specimens collected by Henderson 

 and Simpson 5 miles west of Port-au-Prince. 



U.S.N.M. No. 162927 contains 68 specimens collected by Henderson 

 and Simpson at Port-au-Prince. 



