BRACHYPODELLA, S. STR. 831 



6. Santo Domingo; length 8 to 9.3 mm., with 

 Sy 2 to 101/2 whorls; truncate. 



B. d. gabbi, no. 36a.. 



66. St. Croix; length 7.6 to 10.3 mm. with 

 10 to 12 whorls in truncate, 10 mm. with 

 15 whorls in entire shells. 



B. chordata, no. 34.. 



666. Length 15, diam. 3.5 mm., with 12-14 

 whorls in truncate shells. 



B. perplicata, no. 32. 



aa. Ribs rather stout, rounded, depressed in the 



middle, more or less hollow; Porto Rico and 



Virgin Is. B. pallida, no. 33. 



aaa. Ribs low or subobsolete, stronger near the 



suture; form slender; Porto Rico. 



B. riisei, no. 35. 



II. Sculpture of close rib-striaB ; last whorl very shortly free ; 

 Haiti. B. smithiana, no. 37. 



32. B. PERPLICATA (Ferussac). PI. 7, figs. 23, 24. 



Shell truncate, cylindric, thin, diaphanous, pale corneous, 

 longitudinally closely undulate-striate, and provided with 

 distant folds projecting like lamellae. Whorls 12-14, convex, 

 the last plicate-angulate at the base, shortly, almost hori- 

 zontally drawn out. Aperture nearly circular, somewhat 

 channelled at the position of the keel, the peristome free, 

 white, expanded throughout. Length 15, diam. 3.5 mm. 

 (Desk.). 



Antilles, exact habitat unknown. 



Helix (Cochlodina) perplicata FER., Prodr., p. 65, no. 506; 

 Hist, pi. 163, f. 9. Clausilia perplicata DESH. in Lam., An. 

 s. Vert., viii, p. 216 (1838). Brachypodella p., BECK, Index, 

 p. 89. Cylindrella p., PFR. in Phil., Abbild., ii, pi. 1, Acha- 

 tina, f. 9; Monogr., ii, p. 377; vi, 379. DESH. in Fer. Hist, 

 ii, p. 229. 



Known to me by the above-cited works only. According to 

 Deshayes, the ribs follow one another from whorl to whorl, 

 as in Urocoptis fastigiata and B. pallida. Sowerby's figure 



