216 HELIX. 



type is rather globulose, the last whorl comparatively inflated, there 

 occur with it forms almost angulate, and others actually carinated." 



(Mme. Paulucci.} 



Sardinia. 



The synonymy includes, according to Mine. Paulucci, H. inag- 

 nettii Cantraine (non magnettii Mabille) and H. carte Kobelt (non 

 carce Cantraine). 



The following form is described by the Marchesa Paulucci as a 

 variety of IT hospitans, which is considered by her a species distinct 

 from H. serpentina, although connected with the latter by transition 

 forms. 



Var. ALABASTRINA Paulucci. PL 61, figs. 17-19. 



' Differs from the type by the more globose, more solid shell ; the 

 last whorl less dilated ; the brown umbilical and parietal maculation 

 wanting ; columellar margin thick, alabastrine ; aperture small." 



Diam. 20, alt, 14 mill. 



Another form inhabiting Cape St. Ellas, has been called by Mme 

 Paulucci mutation (or variety) porphydica. Its differential char- 

 acters are found in the entire absence or great reduction of the spot 

 at the insertion of the columella, and the coloration of the surface- 

 which consists of small crowded maculations, which frequently have 

 a tendency toward violaceous, instead of brown. 



Subspecies CAR.E Cantraine. PL 64, figs. 9, 10. 



Imperforate, orbiculate-convex, somewhat depressed, smooth, shin- 

 ing, yellowish marbled and vermiculate with dirty white, ornament- 

 ed with five brown interrupted zones ; spire prominent but subplane ; 

 aperture ovate-lunate, white, as w.ide as high ; peristome reflexed ; 

 umbilical callosity bordered yellowish. Corsica; Sardinia. 



H. halmyris Mabille is synonymous. 



Var. ADJACIENSIS Paulucci. PL 64, figs. 11-13. 



Smaller, more globose, spire elevated, umbilical tract with a brown 

 spot, columellar and parietal margins brown. 

 Diam. 21, alt, 15i mill. 



Subspecies CENESTINENSIS Crosse et Debeaux. PL 60, figs. 94, !)">. 

 Imperforate, turbinate-depressed, somewhat solid, slightly shin- 

 ing, scarcely striate, whitish, encircled by spiral rather wide regular 

 deep chestnut zones, variegated with white; spire subdepressed, 

 apex obtuse, smooth, pale violet; suture^ impressed ; whorls 4^, 



