FEESHWATEB SHELLS OF AUSTRALIA. 283 



70. Phtsa PROTEUS, Sowei'by. 



Physa proteus, Sowerhy, Con. Icon. fig. 43 a-b (non c, = gibbosa, 



Gould). 

 Var. jun. = P. brisbanica, Nelson i^- Taylor, Journ. Conch, ii. p. 288, 



pi. i. fig. 7 (bad). 



Hah. Nortli, East, and South Australia. 



This species seems to be pretty generally distributed ; for ia 

 the Museum there are specimens from the River Isaacs, Moretou 

 Bay, Adelaide, Brisbane, Adelaide Eiver, Murray Eiver, and Eock- 

 hampton. 



It is extremely variable in form, and the length of the spire 

 differs most remarkably in series of specimens from the same loca- 

 lity. Very probably certain varieties will eventually prove to be 

 the P. novce-holIandicB of Blainville and the P. Lessonii (novcs- 

 hol/andics, Lesson). 



The shell described under the name of P. hrishanica, which 

 has been submitted to me for examination, appears to be the young 

 state of a variety of this species. The figure of it represents the 

 spire too long and much stouter. 



71. Physa subundata, Sowerly. 

 Physa subundata, Sowerby, Con. Icon. fig. 61. 



Sab. St. Margarets, South Australia (Sowerby); Cardvvell, 

 E-ockingham Bay, Queensland (Brazier). 



The colour of this species, judging by the figure and speci- 

 mens sent by Mr. Brazier to the Museum, is rather pale horn- 

 colour than " olive-brown " as described by Sowerby. The spiral 

 striation will distinguish this species from P. pectorosa, which it 

 somewhat resembles in form. 



72. Phtsa tenutstriata, Soioerby. 

 Physa tenuistriata, Sowerby, Con. Icon. fig. 85. 

 PTflS. Torrens Eiver, South Australia (Sowerby). 



73. Phtsa textueata, Sowerby. 

 Physa texturata, Sowerby, Con. Icon. fig. 95. 



Hab. South Australia (Sowerby) ; Sutton Grange, Victoria 

 (B. Eihericlge). 



The extreme upper margin of the whorls is bordered with a fine 

 white thread-like line, beneath which there is a narrow dark baud. 

 The light brownish stripe within the aperture is an internal 

 thickening. 



