BY B. M. JOHNSTON, F.L.S. 75 



It tas, therefore, a great interest in the eyes of those who 

 are -working out the prohlems connected with original centres 

 of distribution. 



Anguilla australis. 



Locality : — Yellow Rock Creek ; also common to the waters of 

 Tasmania, Australia, and New Zealand. 



Land Mollusc?. 



Helix ruga. Cox. Common, 



„ Brunonia, nov. sp. Common. 



„ ccBsus. Cox. Very abundant. 



„ ^5icfo7is. Tate. Common. 



„ Wynyardensis. Petterd. Very abundant. 

 Vitrina Verreauod. PfeifFer. Common. 

 Succinea australis. Pfeiffer. Very abundant. 



Fresh Water Molluscs. 



Physa Tasmanica. Ten.-Woods. Common. 

 Pisidium Tasmanicum. Ten.-Woods. Common. 



These shells have all been collected in or near Porky 

 Lagoon on the West Coast of King's Island. With the 

 exception of Helix Brunonia, mihi, which appears to be a 

 new species, all are common to Tasmania, and some of them 

 inhabit the Southern coasts of Australia. 



Helix Brunonia, mihi, is a fine shell nearly an inch in 

 greatest diameter, a description of which is hereafter 

 submitted. 



Helix Brunonia. Nov, Sp. 



Shell perforated, convex or depressedly conical, thin 

 translucent, somewhat coarsely and irregularly striated with 

 lines of growth ; surface ornamented with a fine tesselated or 

 scaly epidermis ; tesselation, as seen under lens — oblique, 

 crossing curved lines of growth. Colour dull, pale to dusky 

 purplish brown, lighter underneath ; spire conoidly convex ; 

 nucleus slightly raised ; whorls 4| convex ; suture well marked, 

 and grooved along its course internally ; periphery and base 

 roundly convex ; aperture oblique, Innately rounded ; peristome 

 simple, sometimes with slightly granular margin ; margins 

 distant, the columellar margin dilated and reflected, almost 

 covering the minute perforation. 



Diameter, greatest 0*87, least 0*75 ; height 0-50. 



Collected by Mr. J. Brown, Surveyor, at the Springs, near 

 Cape Wickham, King's Island, in moist situation in ti-tree 

 scrub, among decayed vegetable matter. 



