6 AUSTRALIAN LAND SHELLS. 



crossed with fainter very minute corrugations, variously marked with 

 interrupted dark bands and series of blotches, frequently obsolete or 

 wanting, and usually near the suture darker and flame-like ; spire 

 small, obtuse ; whorls 4, convex, very rapidly increasing, the last 

 very much dilated and produced in front, diagonally from the axis, 

 much compressed about the large deep and funnel-shaped umbilicus; 

 aperture oblique, lunately oblong, bluish and somewhat iridescent ; 

 peristome thin, margins slightly approximating and joined by a very 

 thin callus, outer nearly straight, anterior regularly curved, colu- 

 mellar sinuated in the centre, much expanded, and reflected in an 

 arched manner over the umbilicus. 



Diameter, greatest 3 P 50 ; least 2 - 60 ; height 200 of an inch. 



Habitat. Manning, Bellinger, Clarence, Richmond and Tweed Rivers, 

 N. S. "W. MacGillivray. Ipswich, Queensland. Masters. 



A variety of a uniform fulvous colour is frequently met with. 



This fine species is very variable in its markings, but yet not admissible 

 of division into varieties, with the exception of that mentioned, of 

 which I have many specimens from the Richmond River. 



11. Helix Maconelli. Reeve. Plate III. Fig. 5. M.O. 



Bulimus Maconelli. Reeve, Pro. Zool. Soc., 1851, p. 198. Moll PI. XII. 



Shell imperforate, ovate, thin, finely striated, the striae decussated by 

 very faint corrugated wavy lines, covered with a reddish chestnut 

 epidermis, with numerous (4 to 8), spiral, interrupted dark bands 

 of various width, consisting of separate rectangular blotches, with 

 series of larger and darker markings near the suture, with yellow or 

 paler interstices ; spire short, obtuse ; whorls 4, moderately convex, 

 very rapidly increasing, last inflated and produced in front in 

 the direction of the axis ; aperture oblique, lunately oval, bluish- 

 grey, and pearly within ; peristome simple, acute, margins joined 

 by a very thin callus, right rather straightly curved, basal regularly 

 arcuated, columellar nearly straight, whitely callous, flatly reflected 

 and adnate. 



Diameter, greatest 3-20 ; least 2 20 ; height 2 - 10 of an inch. 



Habitat. Brisbane, Queensland. Maconell. 



This has generally been regarded as a Bulimus ; it is, however, so 

 remarkably allied to Hdix Falconari, that it seems more natural that 

 they should be generically associated. The markings and even the 

 minute sculpturing may be said to be identical, but the present 

 species is more lengthened or Bulimoid, and is imperforate. 



IS. Helix Banneri. MacGillivray. M.S.S. 

 Pfr. } Fro. Zool. Soc, 1862, p. 270. 



Shell umbilicated, turbinately-globose, rather thin, obliquely irregu- 

 larly striated and very thickly pustulated, reddish-yellow, with a 

 yellowish band near the suture ; spire shortly turbinate, apex rather 

 acute ; whorls 4^, convex, the last ventricose, deeply descending in 

 front; columella slightly arched, sinuous; aperture almost diagonal, 

 lunately rounded, somewhat pearly within ; peristome thin, shortly 

 expanded, scarcely reflected, margins converging, joined by a thin 



