18/6.] MR. G. F. ANGAS ON NEW HELICES. 267 



Helix moresbyi, n. sp. (Plate XX. figs. 8, 9.) 



Shell umbilicated, globosely conical, moderately solid, finely and 

 irregularly obliquely striated, fulvous chestnut, paler at the apex, with 

 various broad and narrow bands of deep brown, darker below the 

 sutures ; spire conical ; whorls 6, convex, the last somewhat flat- 

 tened at the base and excavated towards the umbilicus ; aperture 

 oblique, sublunate, within glossy and of a pale purplish hue, lips 

 black, margins approximating and joined by a thin callus, outer 

 margin expanded and subreflexed, columellar margin dilated, partly 

 concealing the umbilicus. 



Diam. maj. 23 min. 14, alt. 23 lines. 



Hub. Port Denison, Northern Queensland. 



In its general character this species comes nearer to H. yulei, 

 Forbes, than to any other ; but it differs in being larger, very much 

 more conical, and in having the base of the last whorl peculiarly 

 flattened. 



Helix rhoda, n. sp. (Plate XX. figs. 10-12.) 



Shell deeply and profoundly umbilicated, depressedly convex, mo- 

 derately solid, finely obliquely irregularly striated, fulvous brown, 

 scattered with pale, diaphanous, oblique stripe-like spots, with 

 a suffused brown band below the suture, and another darker and 

 narrower band above it, also a narrow dark band on either side 

 of the keeled periphery ; spire depressedly conical, apex obtuse ; 

 sutures narrowly margined ; whorls 6, convex, the last not descend- 

 ing, moderately keeled at the periphery and a little flattened at the 

 base; aperture oblique, truncately ovate, right margin rather sinuous, 

 very slightly expanded and subreflexed, the basal a little thickened, 

 somewhat reflexed, and white. 



Diam. maj. 10, min. 9, alt. 5 lines. 



Hub. San Christoval, Solomon archipelago. 



This shell belongs to the Trochomorpha group, its nearest ally 

 being H. merziana, Pfr. 



Helix angasiana, Pfr. (not Newcomb, in Ann. Lyceum Nat. 

 Hist. New York). 



This characteristic species (first described in the French ' Journal 

 de Conchyliologie,' 1862, p. 228, by Dr. Pfeiffer, from a dead and 

 bleached specimen in a chalky condition, that was sent home by me 

 from the neighbourhood of Lake Torrens, in the interior of South 

 Australia) has been the cause of some confusion amongst concholo- 

 gists, which I desire to rectify. On my subsequently obtaining 

 living specimens of this species from the same locality I wrote to 

 M. Crosse, the editor of the Journal, stating that the diagnosis 

 should be modified, the specimen figured having lost all its colour 

 and become thickened by exposure to the influences of the atmo- 

 sphere. This note was published by M. Crosse in the Journal for 

 1863, in which the colours of the living shell were given. Notwith- 

 standing this, Dr. Cox, of Sydney, in his 'Monograph of the Austra- 

 lian Land Shells,' states that M. Crosse is mistaken, and that the 



