18/6.J MESSRS. ADAMS AND ANGAS ON NEW LAND-SHELLS. 489 



5h, rather convex, the last descending in front ; aperture oblique, qua- 

 drately lunate ; peristome white, margins converging, united by a 

 faint callus, right margin slightly sinuous, a little expanded and re- 

 flexed, columellar margin dilated above and a little excavated. 



Diam. maj. 25, min. 22, alt. 22 mill. 



Hab. Malanta Islands, Solomon Archipelago. 



This species differs from H. guadalcanarensis, Cox, in being more 

 conical, in the last whorl being less inflated, descending in front, and 

 not angled at the periphery, and in the aperture being smaller, and 

 the outer lip much less flattened and expanded, as well as by the ab- 

 sence of the black margin at the angle of reflexion behind^the outer 

 lip, and the purple spot on the columella, and in having the base 

 broadly stained and zoned with chestnut. 



Helix comriei, n. sp. (Plate XLVII. figs. 4, 5.) 



Shell imperforate, conically semiglobose, rather solid, rugosely 

 spirally grooved, and obliquely finely striated, opaque, whitish ; 

 spire conoidal, obtuse; whorls 4|, rather convex, the last descend- 

 ing, subangulated at the periphery, somewhat flattened at the base, 

 and a little excavated behind the aperture ; aperture diagonal, oval- 

 oblong, pale brown within, peristome white, margins converging, 

 united by a thin callus, right margin sinuous, rather expanded and 

 reflexed ; columellar margin dilated and appressed. 



Diam. maj. 27, min. 21, alt. 20 mill. 



Hab. Shores of Huon Gulf, South-east New Guinea. 



This interesting species is allied to Helix brumeriensis, Forbes, 

 but is rather smaller in size, and without the characteristic black lip 

 of the latter. It was discovered by Dr. Comrie, of H.M.S. 'Basi- 

 lisk,' after whom we have named it. In the same locality Dr. 

 Comrie obtained several specimens of Helix brumeriensis, hitherto 

 known only by the single specimen in the British Museum, collected 

 by the late Mr. J. McGillivray at Bruiner Island, during the voyage 

 of II. M.S. 'Rattlesnake,' in August 1S49. 



Helix robillardi, n. sp. (Plate XLVII. figs. 6, 7.) 



Shell umbilicated, orbicularly subglobose, rather solid, obliquely 

 striated, whitish, with a pale brown shining epidermis, and orna- 

 mented with three very narrow dark brown bands, one being sutural ; 

 spire depressedly conical, apex obtuse ; whorls 5, moderately convex, 

 the last descending in front and somewhat flattened at the base ; 

 umbilicus open, funnel-shaped ; aperture diagonal, truncately oval, 

 pale brown within ; peristome with margins approximating, united 

 by a thin callus, the right margin slightly flexuous, expanded, and a 

 little reflexed; the columellar margin thickened, reflexed, and dilated 

 above. 



Diam. maj. 32, min. 27, alt. 20 mill. 



Hab. South-west Madagascar (Coll. Sir D. Barclay). 



Helix feneriffensis, n. sp. (Plate XLVII. figs. 8, 9.) 

 Shell narrowly umbilicated, depressedly trochiform, carinated, very 



