18 DESCRIPTION OF NEW 



ing been found by him in Indian Creek, between the Salt and Red 

 Sulphur Springs. The sinus is so small, that at first view it may easi- 

 ly escape observation. The aperture is large, and in this it has some 

 resemblance to a Paludina. Near the base of the columella a purple 

 spot may be usually observed. It resembles most in outline the M. 

 tuherculata (nobis), but differs in not being angulated, and being en- 

 tirely without tubercles. In colour it differs entirely. Some indivi- 

 duals have three coloured purple bands in the interior, while others 

 are devoid of them. 



Physa aurea. Plate XXIII. fig. 106. 



Testa sinistrosa, subinjlata, aurea, pellucida; spira breviuscula ; anfractibus quaiernis; 

 labro marginato; apertura subinfiala. 



Shell sinister, rather inflated, golden colour, pellucid, shining; spire rather short ; 

 whorls four; outer lip margined ; aperture somewhat inflated. 



Hab. Hot Spring, Bath county, Virginia. P. H. Nicklin. 



My Cabinet. 



Cabinet of P. H. Nicklin. 



Diam. '3, Length -5 inches. 



Remarks. — Mr Nicklin informed me that he found the Physa au- 

 rea in a little water-course, by which a hot and a cold spring discharge 

 their mingled waters. The former exhibits a temperature of 106 de- 

 grees, and the latter of about 56 degrees of the scale of Fahrenheit. 



Near the meeting of the waters, one side of the little stream is cold 

 and the other side hot ; and multitudes of these beautiful Fhysx are 

 to be found on both sides of the line of junction, availing themselves 

 of the power which the locality affords them, of changing their cli- 

 mate according to their fancy. 



