280 ME. E. A. SMITH ON THE 



slender prominent fold, wliicli revolves within to the apex ; margin 

 of labrum regularly curved and rounded." 

 JSab. Bogan Eiver, IST. S. "Wales. 



58. Phtsa. JSTewcombi, A. Adams ^ Angus. 



Pbysa Newcombi, A. Adams Sf Angus, Proc. Zool. Soc. 1863, p. 416 ; 

 Sowerhy, Con. Icon. fig. 21. 



Sab. Pond near Mount Margaret, Central Australia (Angas). 



This species is remarkable for the rapid enlargement oi" the 

 body-whorl and the large size of the aperture. It is also umbi- 

 licated, and the great development of the labium is very unusual 

 in this genus. 



59. Physa ikelata, A. Adams Sf Angus. 



Pbysa inflata, A. Adams Sf Angas, Proc. Zool. Soc. 1864, p. 39 ; Sowerby, 

 Con. Icon. fig. 4 n-b. 



Hah. Wakefield Eiver, S. Australia {Angus). 



The types of this species, presented to the British Museum by 

 Mr. G. P. Angas, display even greater inflation of the whorls than 

 is represented in the figure in the ' Conchologia Iconica.' 



P. Newcomli is very like this species, but it is rather longer, has 

 a higher spire, a shallower suture, and the whorls are less swollen. 

 The aperture, too, is not so broad and rounded, and the colour is 

 different, being of a brownish tint, whilst that of P. inflata is 

 greenish olive. 



60. Phtsa eadia, A. Adams Sf Angas. 



Pbysa badia, A. Adams 8f Angas, Proc. Zool. Soc. 1863, p. 416 ; 

 Sowerby, Con. Icon. fig. 51 a-b. 



Hab. A tributary of the Adelaide Eiver, Arnheim's Land, 

 N. Australia {Angus). 



This dull heavy-looking species is not unlike an elongate form 

 of P. jpectorosu. 



61. Physa eeeeuginea, A. Adams Sf Angas. 



Pbysa ferruginea, A. Adams Sf Angas, Proc. Zool. Soc. 1863, p. 416; 

 Sowerby, Con. Icon. fig. 25. 



Sab. Same as the preceding species. 



This species is readily distinguished from all others in the genus 

 by the deep vinous-red colour, a character but very ijidiflerently 

 rendered in the figure by Sowerby. 



