560 DR. J. COX ON NEW LAND AND MARINE SHELLS. [June 17, 



transversely rather coarsely striated throughout, and covered above 

 and below "with oblique rows of prominent rather coarse setae ; spire 

 slightly raised, bluntly convex ; suture deeply impressed ; whorls 5, 

 convex, gradually increasing in size, last somewhat inflated, rounded 

 below, excavated round the umbilicus, and gradually depressed in 

 front for half the circumference of the whorl ; aperture transversely 

 oval, lip broadly expanded and slightly thickened, triangularly dilated 

 at the columella, the outer margin of which overhangs the umbilicus ; 

 margins of aperture joined by a thin callus. 



Diam., greatest 121, least 0"95 ; height 076 of an inch. 



Hab. Louisiade Islands, on the north-east, coast of Australia. 



This species has the general aspect of a large specimen of H. 

 erinaceus, Pfr. 



Helix (Geotrochtjs) redempta, sp. nov. (Plate XLVIII. 

 figs. 6, 6 a.) 



Shell orbicularly convex, imperforate, obliquely finely striated from 

 above downwards and backwards with straight striae, and on the 

 last two whorls from behind forwards with interrupted malleated striae, 

 of a dull opaque white colour, apex pink, variously ornamented with 

 irregular dark chestnut spots, or with two or more regular broad 

 bands ; spire bluntly coniform ; whorls 5, slightly convex, last sharply 

 keeled and shortly deflected in front, base flattened ; aperture quadri- 

 lateral, beaked at the periphery of the last whorl, margins joined by 

 a thin pink callus ; peristome pink, narrowly reflexed ; columella 

 broadly dilated, blending with the pink callus joining the margins, 

 and occluding the umbilicus. 



Diam., greatest 1-09, least 0-84 ; height 0'72 of an inch. 



Hab. Solomon Islands. 



The present shell is one of three specimens of Helix submitted 

 two or three years ago to Mr. G. F. Angas for identification, one of 

 which was pronounced to be H. louisiadensis ; a second was labelled 

 as a dead, very much worn variety of H.fringilla; and the third, the 

 one I am now describing, was sent back as a variety of H. eros. 



Examples of the first I circulated under the title of H. louisia- 

 densis ; but Mr. Angas on further comparison of the specimens has 

 recently determined that it is a new species, which he has named 

 H. pkilomela. The figure, however, given by him is that of the 

 rarest variety, and cannot be regarded as the ordinary representa- 

 tive of the species. It is found abundantly at the Louisiade and the 

 Solomon Islands ; and the prevailing colour is white with a dark 

 black edge behind the reflexed lip, "a pigment-like deposit." 



The shell labelled as "a dead, very much worn variety of H. 

 fringilla " I saw could not on any pretence be admitted to be such ; 

 and, trusting to Mr. Acgas's diagnosis of H. louisiadensis, I considered 

 it new, and described it as H. millicentce in these ' Proceedings' for 

 1871. I now find that it proves only to be a very rare variety of 

 H. louisiadensis with a white lip, as in this particular it differs from 

 a number of specimens recently received by me of this hitherto rare 

 species. 



