646 DR. J. COX ON NEW LAND-SHELLS. [Nov. 7, 



nally at the angle of reflexion ; margins approached, columella di- 

 lated, adnatc 



Diam., greatest 1*00, least - 80 ; height T08 of an inch. 



Hab. Guadalcanar Island, Solomon Islands. 



The characters of this species correspond very closely with those 

 given by Pfeiffer to Helix Jiexilabris ; but I consider there are suffi- 

 cient points of distinction to regard it as a new species ; it is a less 

 conical shell, and the last whorl is much more inflated. 



Helix sellersi, sp. nov. (Plate LII. fig. 9.) 



Shell imperforate, trochiform, brownish yellow, generally orna- 

 mented with two very dark chestnut, almost black, bands, more or 

 less wide, one above and one below the subcarinated periphery of the 

 last whorl, having sometimes between them an opaque white band ; 

 transversely rather regularly striated backwards, decussated from 

 behind forwards by rather irregular, slightly waved, proportionally 

 broadly separated striae, more distinct on the last two whorls than 

 at the apex of the spire ; whorls 5, rounded, gradually increasing in 

 size, suture impressed, last whorl sharply depressed at its termination 

 and flattened from the periphery to its insertion ; spire obtuse ; 

 aperture ovately lunate ; peristome white-margined, slightly everted ; 

 columella very slightly dilated and adnate. 



Diam., greatest 078, least 0"j6; height - 60 of an inch. 



Hab. Guadalcanar Island, Solomon Islands. 



Helix compluviatus, sp. nov. (Plate LII. fig. 10.) 



Shell with a very narrow, deep umbilicus, discoid, flat above, 

 rounded below ; spire oidy slightly raised, covered with a glossy 

 corneous epidermis of a dark claret-colour above, pale below ; whorls 

 6, slowly increasing in size, last not depressed in front, suddenly de- 

 scending at the periphery, before descending being grooved with a 

 narrow deep gutter continuous above the margin of the suture almost 

 to the apex ; aperture angularly lunate ; peristome simple, thin, 

 angled and notched above the middle by the termination of the 

 groove ; margins rather distant, columellar margin very slightly 

 dilated and everted. 



Diam., greatest 1" 10, least 0*88; height 0/0 of an inch. 



Hab. Solomon Islands. 



Helix hunteri, sp. nov. (Plate LII. fig. 11.) 



Shell with a moderately large, deep, open perforation, globosely tur- 

 binate, thin, pale flesh-coloured, obliquely finely striated from above 

 downwards, and longitudinally striated, especially on the second and 

 third whorls, with coarser granose striae; whorls 4|, rounded; spire 

 depressedly conoid, apex obtuse, last whorl inflated, (partially) cari- 

 nated below the middle, the line of carination being opaque or creta- 

 ceous ; aperture slightly angled and elongatelv lunate ; peristome thin, 

 broadly reflexed, margins slightly approached, columellar margin tri- 

 angularly dilated, overhanging and produced beyond the umbilicus. 



Diam., greatest 1*08, least ,Q 2; height 086 of an inch. 



