20 MR. 3. BRAZIER ON NEW LAND AND MARINE SHELLS. [Jan. 2, 



6. Helix (Geotrochus) leucoph^ea, sp. nov. (Plate IV. 

 %. 5.) 



Shell with a covered umbilicus, turbinately globose, transversely 

 very finely striated, and, at the base more particularly, finely longi- 

 tudinally striated ; usually very light brown, ornamented with grey 

 zones and bands ; whorls 5| to 6, gradually increasing, rounded, 

 last very slightly reflected in front, subangled at the periphery, 

 flattened at the base ; suture impressed ; aperture lunar-oval ; peri- 

 stome white, flatly expanded and reflected ; margins approximating, 

 columellar margin dilated and reflexed, concealing the umbilicus. 



Diam., greatest - 80, least 0'62; height 0'80 of an inch. 



Hab. Gaudalcanar, San Christoval, and other islands of the So- 

 lomon group. 



I have possessed specimens of this shell for several years ; and 

 it was considered, by good authorities to whom I referred it, to be 

 Helix migratoria ; I took for granted that it was such, and have 

 frequently distributed it under that name. Having since looked 

 into the characters of Helix migratoria, as given by Pfeiffer in the 

 Proc. Zool. Soc. 1855, p. 108, and at the figure of the same 

 (pi. xxxii. fig. 3), I find that they do not correspond with the 

 characters of the shell now described, which I therefore consider 

 to be a new species ; it varies much in its markings, being some- 

 times uniformly of a grey colour without bands, and again uni- 

 formly of a light brown colour, with no grey zones or bands. 



6. Descriptions of seven new Species of Land and Marine 

 Shells from the Solomon Islands, Western Polynesia, 

 and Australia. By John Brazier, C.M.Z.S. 



[Keceived December 4, 1871.] 



(Plate IV.) 



[Specimens of the species marked with an asterisk are deposited in the British 



Museum.] 



*1. Helix (Geotrochus) brodiei, sp. nov. (Plate IV. fig. 6.) 



Shell imperforate, flatly conical, thin, shining, obliquely faintly 

 and irregularly plicately striated, white, with a chalk-white band at 

 the suture and periphery, and with a spiral band of dark brown at 

 the base, sometimes diffused ; with the white band at the periphery ; 

 keeled, rather blunt at the apex ; whorls 5, nearly flat, the last con- 

 vex at the base ; aperture oblique, rhomboidally ovate ; peristome 

 dark brown, moderately thickened, margins approximating, the right 

 slightly deflexed, the columellar margin reflected and furnished with 

 a straight callus. 



Diam. maj. 8, min. 6g, alt. 7 lin. 



Hab. Choiseul Island, Solomon Islands. 



