288 NELSON & TAYLOR : ON F. W. SHELLS OF QUEENLAND. 



Around Launceston and Hobart Town it is smaller and more 

 sparingly met with, although it is anything but rare. In this 

 species the embryonal whorls are striated as the rest of the shell, 

 not smooth as in H. MacDoualdi. 



I have great pleasure in dedicating this species to Mr. 

 Petterd, its discoverer, who has done so much to increase our 

 knowledge of the shells of the Australian fauna. 



CONTRIBUTIONS TO A BETTER KNOWLEDGE OF 

 THE FRESHWATER SHELLS OF QUEENSLAND. 



No. L— DESCRIPTIONS OF THREE NEW PHYSyE. 



By WM. nelson and J. W. TAYLOR. 



(Read before the Conchological Society of Great Britain and Ireland, July 31, 1879.) 



In the series of papers of which the present is the first, we 

 propose to enumerate the species of freshwater shells already 

 known to inhabit Queensland, and from time to time to describe 

 and figure such species as come under our notice that appear to 

 be new or previously undescribed. 



We trust in this useful work to receive the aid and co-opera- 

 tion of such of our antipodean collaborators as feel an interest in 

 the elucidation of the freshwater fauna of this important district ; 

 such aid will be thankfully received and duly acknowledged. 



The first arrivals are from our zealous and esteemed corres- 

 pondent Mr. W. F. Petterd, and amongst them are several species 

 previously unknow-n to science, of which descriptions, &c. are 

 appended. 



Physa Brisbanica.- — Shell fusiform,horn color,rather sohd; 

 spire produced, acuminated; whorls 6, convex, regularly and 

 slowly increasing in size, the last whorl exceeding in size the rest 

 of the shell, deeply and regularly striate by the lines of growth; 

 suture deep; inner lip thin; columellar fold not prominent; 



J.C, ii., Sept., 1S79 



