58 AUSTRALIAN LAND SHELLS. 



expanded over the umbilicus, by which it is at length completely 



hidden. 

 Diameter, greatest 1*80; least P30; height 1*20 of an inch. 

 Habitat. Miriam Vale, Port Curtis, Queensland. Blomfield. 

 The nearest approach to this species is made by the uniformly dark 



variety of H. Frazeri, mentioned under its proper head. But this is 



remarkable for its unusual elongation above and below, giving it 



something of a Bulimoid appearance. 



144. Helix cerata. Cox. Plate VIII. Pig. 4. M.C. 

 H. Porbesi. Cox, Pro. Zool. Soc, 1864, p. 40. 



H. cerea. Cox, Catalogue of Australian Land Shells, p. 36, 1864. 



Shell imperforate, solid, giobosely-eonical, rather glossy, finely striated, 

 very pale waxy-yellow, with numerous spiral reddish lines, and very 

 narrow bands ; spire rather large, broadly-conical, obtuse ; whorls 

 7, rather convex, last very large, dilated and produced in front, 

 above deflected ; aperture diagonal, ovately-lunate, white within ; 

 peristome straight, everywhere expanded and slightly reflected, 

 margins scarcely approximating, joined by a callus ; columella 

 thickened and expanded, completely obliterating the umbilicus. 



Diameter, greatest P60; least P25; height 1-10 of an inch. 



Habitat. Port Molle and Port Denison, Queensland. Masters. 



A very remarkable shell, in form and solidity approaching II. Blom- 

 jieldi, and in colour and markings II. Incei. In short the wonderful 

 parallelism of these shells is so obvious that it may be set down as 

 II. cerata is to H. Incei, so is H. Blomfieldi to 27. Lessoni. The 

 ground colour is white ; the epidermis is remarkably thin. The 

 shell has a waxy and smooth, rather glossy appearance, especially 

 below. 



145. Helix Curtisiana. Pfr. 



Pfr., Pro. Zool. Soc, 1863, p. 528. 



Shell narrowly umbilicated, conoid! y-seini-globose, solid, striated, 

 chestnut ; spire conoidly-convex, above whitish, apex rather obtuse ; 

 suture with a white thread ; whorls 6, slowly increasing, last large, 

 convex, somewhat angular above the middle, flattish at the base, 

 descending in front ; aperture nearly diagonal, roundly-lunate ; 

 peristome scarcely thickened, narrowly expanded, columellar margin 

 triangularly dilated above. 



Diameter, greatest PI 4; least 0'98; height 0'67 of an inch. 



Habitat. Port Curtis. Angas. 



This description has been translated from Pfeiffer, who indicates the 

 position of the shell to be next H. Yulei. 



146. Helix similaris. Per. Plate IX. Pig. 14. M.C. 

 Fer., Hist. Moll. PI. XXV. B. Pig. 14; and PL XXVII. A. Fig. 3. 

 Reeve, Cone. Icon. sp. 149. 



Shell umbilicated, depressly-globose, scarcely shining, rather thin, 

 translucent, striated, pale yellowish-horny, with, usually, a narrow 

 reddish band ; spire obtusely-conical ; whorls convex, last slightly 



