1872.] DR. J. C. COX ON NEW LAND-SHELLS. 19 



specimens of H. blomjieldi, Cox, but it may at once be distin- 

 guished from that species by its flat base and its large open umbi- 

 licus, overhung by the expanded columellar margin. 



3. Helix (Trachia) dryanderensis, sp. nov. 



Shell flatly depressed, smooth, thin, with a very large, broad, 

 open, shallow umbilicus, in which the sutures of the spire are 

 distinctly seen, light brown throughout ; whorls 4j, extremely 

 rounded, gradually increasing in size, the last much deflected in 

 front, base rounded ; spire almost flat, suture large and deep ; 

 aperture circular, dilated, slightly constricted behind ; margins almost 

 meeting, columellar margin simple, straight. 



Diam., greatest 0'J2, least 034 ; height 045 of an inch. 



Hab. Mount Dryander, Port Denison, Queensland, Australia. 



This species is allied to Helix cyclostomata, Le Guillou, but it 

 partakes even more of the form of a Cyclostoma than that species. 



4. Bulimus (Placostylus) cuniculinsul^e, sp. nov. (Plate 

 IV. fig. 3.) 



Shell largely rimate, pyramidally ovate, thin, translucent, covered 

 witb a tough chestnut-coloured epidermis, obliquely, roughly, irre- 

 gularly striated longitudinally ; spire conical, lighter at the apex 

 and denuded of epidermis ; whorls 6, convex, the last inflated, 

 rounded at the base, equalling three fifths the length of the shell ; 

 aperture irregularly ovate ; peristoine straight, slightly thickened 

 and somewhat everted, tinted with pink internally ; columella pyra- 

 midally dilated, of a pink colour, moderately arched ; margins of 

 the peristome joined by a thin pink callus. 



Length 1"65, breadth 0"75 of an inch. 



Hab. Rabbit Island, near Lord Howe's Island, Pacific Ocean. 



This species has recently been found abundantly on Rabbit Island ; 

 it is closely allied to its neighbour Bulimus bioaricosus, Gask., of 

 Lord Howe's Island ; it is a smaller and a lighter shell, and is inva- 

 riably decidedly rimate. 



5. Bulimus (Charis) kreetii, sp. nov. (Plate IV. fig. 4.) 



Shell scarcely rimate, elongately ovate, not thin, longitudinally 

 finely striated, shining, covered with a light reddish-brown epi- 

 dermis ; apex yellow-red, suture deep-margined below with a white 

 line ; whorls 6, convex, the last occupying two thirds the length of 

 the shell ; aperture large, elongately oval, white within ; peristome 

 straight, thickened and everted at the edge ; columella white, 

 broadly conical, dividing into two pillars, one running on to the 

 body-whorl and blending with the thin callus which joins the 

 margins of the peristome, the second (which is flattened and pro- 

 jecting) running spirally within the body-whorl. 



Length 2-10, breadth 0"92 of an inch. 



Hab. Solomon Islands. 



I have several specimens of this shell in my collection, which I 

 am unable to refer to any of the previously described species. 



