HELIX. 195 



H. LEPTOSTYLA Dohrn, 1869. PI. 66, fig. 80b. 



r Phis species has the form, sculpture and aperture of the preceding ; 

 but is thicker, larger, and has a tendency to be brown banded, the 

 bands broad, faint, and minutely flecked with white. The periph- 

 eral keel is more obsolete, and indeed scarcely apparent save in 

 front of the aperture. The body-whorl is somewhat more deflexed 

 anteriorly. Diam. 13-15, alt. 10-12 mill. 



St. Antao, Cape Verde Is. 



If. milleri Dohrn mss. is a synonym. 



H. PEIMJEVA Morelet, 1873. I 'n figured. 



Perforate, depressed turbiuate, corrugated with large oblique folds; 

 spire conoidal ; whorls 4, convex, the last inflated, rounded, not de- 

 flexed ; suture impressed ; aperture ovate-lunar. 



Diam. 18, alt. 11 mill. (Jiiati'niary of In*. .SW, Cape Verdes- 



The peristome was imperfect on the specimens from which More- 

 let's original diagnosis (above translated) was drawn. He com- 

 pares the species to H. undata of Madeira. 



H. ATLANTIDEA Morelet, 1873. Unftgured. 



Imperforate, globose-depressed, densely and regularly costulate- 

 striate; spire convex, smooth toward the aperture; whorls '!', 

 slightly convex, separated by impressed sutures, rapidly increasing, 

 the last dilated, obtusely angulate, not deflexed; aperture ovate- 

 lunar, ends of the peristome joined by a callus, the upper margin 

 straight, the columellar callous, dilated, appressed. 



Diam. 13, alt. 8 mill. Quaternary of Ins. Sal, Cape Verdes. 



Somewhat similar to H. ehrysomela, but a little more depressed, 

 and with one and one-half whorls less than that species. The 

 peripheral angle, which is quite pronounced at the origin of the 

 body-whorl, is gradually lost on approaching the aperture. 



s 



H. SUBROSEOTINCTA Wollaston, 1878. Uttfigiired. 



Imperforate, depressed-globose, scarcely subcarinate, a little shin- 

 ing, whitish, sometimes subfuscous, or very obsoletely almost sub- 

 roseous, obsoletely and irregularly, (especially at the suture) streaked 

 or smeared with sublacteous, the young subpellucid ; whorls ."">, 

 slightly convex, the last slightly descending anteriorly ; peristome 



