72 BRACHYPODELLA, S. STR. 



regularly over the surface of the whorls, and in passing over 

 the keel of the last whorl they are lengthened in a series of 

 little scales. Pale corneous, with a perceptible fawn tint, the 

 ribs standing out white. Whorls 16 or 17, very narrow and 

 convex, parted by a simple, impressed suture, nearly equal in 

 width, the last two more rapidly enlarging; the last whorl is 

 very short. The. flattened base is bounded by an acute angle, 

 the more projecting because of an accompanying depression of 

 the side. The last whorl projecting obliquely forward, ter- 

 minating in a small, squarish aperture ; peristome white, quite 

 wide and strongly reflexed. 



The largest individuals are 14 or 15 mm. long, and hardly 

 2.5 mm. in diameter (Desk.). 



Habitat unknown. 



Helix (Cochlodina) subula FER., Prodr., p. 61, no. 508 

 (nude name; no locality) ; Hist., pi. 163, f. 8. Clausilia^ sub- 

 ula DESHAYES in Lam., An. s. Vert, viii, p. 216, no. 41 (1838). 

 Brachypodella subula BECK, Index Moll., p. 89, no. 3. 

 Cylindrella subula Fer., PHILIPPI Abbild., i, p. 181, pi. 1, f. 

 17 (copy from Ferussac). DESK, in Fer., Histoire, ii, p. 230. 



This species rests upon the figures given by Ferussac in his 

 Histoire, copied on my plate. Deshayes' description, given 

 above, may or may not have been based upon the type speci- 

 men, as he describes the surface as " oblique confertissime 

 costulato-striata " terms but ill agreeing with the detail 

 figure in Ferussac. However, both the description and fig- 

 ures were evidently drawn from shells of the Continental 

 group of Br achy po delta, and, in my opinion, if the type of 

 subula is ever found, it will prove to be either B. leucopleura, 

 B. speluncce, or B. morini. The Jamaican Cylindrella subula 

 of Pfeiffer is certainly not the Ferussacian species. 



24. B. ^QUATORIA (Morelet). PI. 6, figs. 15, 16. 



" Shell rimate, cylindric, tapering above, thin, arcuately 

 and closely rib-striate, grayish corneous, not glossy. Whorls 

 11, a little convex, the last shortly projecting, base carinate. 

 Aperture vertical, rounded ; peristome expanded, free. Length 

 18, diam. 5 mm." (Morelet). 



