HEL1X-CANDIDULA. 161 



H. ORDUNENSis Kobelt. PI. 40, figs. 77, 78. 



Shell small, narrowly but deeply umbilicated, globose, slightly 

 depressed, strongly striated, white or yellowish-white with two 

 sharply defined chestnut-brown bands on either side of the middle 

 line, the upper band ascending the spire ; prettily marked with a 

 narrow pale line on the base. The spire is convex with small, 

 smooth, blackish, apex. There are five rather convex whorls 

 separated by a simple linear suture ; they increase regularly and are 

 closely and regularly striated ; the last is somewhat angulate, regu- 

 larly rounded, hardly noticeably descending in front ; the aperture 

 is but little oblique, nearly circular, peristome simple, sharp, having 

 a distinct white rib within ; the margins converging ; columellar 

 margin scarcely dilated at the insertion. (Kob.) 



Alt. 5?, greater diam. 7J, lesser 7 mill. 



Near Orduna, on the rocky crown of the Concha d" Orduna. 



H. (Candidula) ordunensis KOB., Nachrichtsbl. D. M. Ges. 1883, 

 p. 115 ; Rossm. Icon. n. f. iv, p. 23, f. 542. 



Differs from other species in the small size. 



H. VATONNIANA Bgt (H. FLORENTINE Ponsonby). PI. 40, figs. 47, 48. 



Shell small, narrowly perforated, globose-trochoidal, rather strong, 

 not shining, dirty white with a few indistinct clear-brown bands of 

 spots and a series of more intensely colored, larger, radially disposed 

 spots under the suture. Spire high conical, with minute, hardly 

 obtuse apex. There are more than five well rounded whorls ; the 

 upper ones are smooth, horn colored ; the following irregularly and in 

 places rather coarsely striated ; they increase slowly and are 

 separated by a linear suture ; the last is nearly cylindrical, only a 

 trifle flattened on the base, not descending in front. Aperture 

 nearly circular, very little lunate, and but slightly oblique ; the per- 

 istome is thin, simple, not noticeably lipped ; the margins scarcely 

 approach each other, and the basal margin is hardly dilated at the 

 insertion. (Kob.} 



Alt. 6J, greater diam. 7, lesser 6* mill. 



Dunes east of Tangier. 



H.florentice PONS. mss. KOBELT, Jahrb. D. M. Ges. 1882, p. 68 ; 

 Rossm. Icon. n. f. iv, p. 23, f. 543. 



Seems to stand in the group of H. apicina, but differ widely from 

 other species in the high spire. Mr. Ponsonby now regards the species 



as a synonym of H. vatonniana Bgt. 

 11 



