186 HELIX-FRUTICICOLA. 



Spire nearly flat, the apex somewhat projecting, consisting of 

 glossy, porcelain-white, planorboid whorls ; the following whorls 

 dull, roughened, conspicuously crenulated at the sutures, rapidly 

 increasing ; last whorl either rounded at the periphery (figs. 56, 57), 

 or keeled and crenate in front, then becoming rounded (iigs. 53, 54, 

 55) ; in either case, the jagged carina gives place to a shallow 

 peripheral sulcus ; base convex. 



Aperture oval-lunate, slightly wider than high, oblique ; peristome 

 simple, thin, scarcely labiate within, the columellar margin shortly 

 dilated ; parietal callus very light. 



Alt. 11, diam. 20 mill. 



Alt. 10, diam. 19 mill. 



Lybia (Spratt.) 



The types of this hitherto unfigured species, from the collection of 

 Mr. John Ponsonby, are here illustrated and described. The species 

 is the most aberrant yet made known of the H. tuberculosa group ; 

 and in fact there is none approaching this in the greatly depressed 

 contour. There are 5-5 whorls in all. 



Vol. IV, p. 30 ; for H. sequentina read H. sequentiana. 



Section FRUTICICOLA Held. (Vol. Ill, p. 170). 



H. ANDRIA Martens. PI. 45, figs. 34, 35, 36, 37. 



Shell conoid-globose, narrowly perforated ; striatulate and very del- 

 icately sculptured with distant narrowly lunate scales ; gray-brown, 

 unicolored. Spire conical, apex subpapillar. Whorls 5, slightly 

 convex, separated by a deep suture, the last whorl subangular at its 

 beginning, then rounded, about equally convex above and below, 

 deeply descending in front. Aperture oblique, rounded ; peristome 

 expanded, lipped with reddish or white inside, the margins joined by 

 a distinct callus, lower margin arcuate, not dilated, the columellar 

 triangularly dilated, partly covering the perforation. (Mis.) 



Alt. 10*, greater diam. 15, lesser 12* mill. 



Alt. 8, greater diam. 13, lesser 11 mill. 



Island of Andros, Ionian Archipelago. 



H. (Frutidcola) andria MTS., Arch. Naturg. 1889, p. 181, t. 10, 

 f. 5. 



Very like H. schuberti Roth in size and appearance, but differing 

 strongly in the peculiar sculpture, which reminds one of H. incar- 

 nata. When strongly magnified it seems to consist of crescentic scales 



