AUSTRALIAN LAND SHELLS. 71 



XXXIII. SECTION LIPARUS. Pfr. Vers. p. 157. 



* B. atoraatus. 



175. Bulimus atomatus. Gray. Plate XIII. Fig. 8 ; and 

 Plate XVIII. Fig. 15. M.O. 

 Gray, Pro. Zool. Soc, 1834, p. 64. 



Reeve, Cone. Icon. sp. 184. 



Shell imperforate, acutely ovate, thin, translucent, slightly shining, 

 thickly marked with flattened longitudinal striae, decussated with 

 irregular spiral lines, pale yellowish-brown, thickly covered with 

 dark markings, mostly in interrupted streaks, spots, and zigzag 

 lines ; spire conical, rather blunt at the apex ; whorls 5, moderately 

 convex, last equalling about 4-7th of the entire length ; aperture 

 narrowly oval, bluish within ; peristome simple, straight, thin, outer 

 and anterior margins regularly ai'ched, columellar margin neai-ly 

 straight, and vertical above, slightly expanded and reflected, quite 

 covering the umbilicus, and leaving only a small shallow groove in 

 its place. 



Length 2 - 30; breadth 1-25 ; aperture 1'40 long; 0'65 wide, of an inch. 



Habitat. 70 miles from Port Macquarie. Cunningham. Ash Island 

 and Hexham, Hunter Paver. Scott. Port Stephens. Manning 

 Eiver, N. S. YV. King. 



This seems a fit place to mention, as this description is some- 

 what at variance with Pfeiffer's, that the number of whorls, one less 

 than he makes it, is counted from a front view, and as is also the 

 proportion between the last whorl and the rest of the shell, which is 

 simply the relation of the mouth. He gives no directions on these 

 points, as he does regarding measurements. 



XXXIV. SECTION MESEMBEINUS. Pfr. Vers. 

 p. 158. 



* B. dux. *'' B. inflatus. * B. Tasmanicus. 



176. Bulimus dux. Pfr. Plate XIII. Fig. 4; and Plate 

 XVIII. Fig. 16. M.O. 

 Pfr., Pro. Zool. Soc, p. 24, 1861. 



Shell sub-perforate, elongately-oval, solid, opaque, not shining, with 

 numerous longitudinal and irregular, generally flattened, lines of 

 growth, decussated more or less distinctly above with spiral lines, 

 dull greyish- white ; spire short, conical, acute at the apex, suture 

 slightly impressed, crenulated, margined ; whorls 5 to 5, very 

 slightly convex, last rather more than half the entire length ; 

 aperture narrowly oval, rosy-pink within ; peristome simple, straight ; 

 columella dilated and reflected, almost entirely concealing the um- 

 bilical fissure. 



Length 1-90; breadth 1*10; aperture 1*05 long; 0*50 broad, of an inch. 



Habitat. King George's Sound, W. Australia. Masters. 



A very remarkable, large, solid, whitish shell, resembling a semi-fossil. 



