THE NAUTILUS. 143 



From an aboriginal shell-heap on the left bank of Kitchen's 

 Creek, near the entrance of the St. John's Kiver into Lake George, 

 Florida. Collected by Mr. C. B. Moore. 



The great variability of these shells and their distorted aspect 

 inclines me to place them as a local variety of V. georgiana, 

 but they are so very different in appearance from that species, that 

 in the absence of intermediate examples, I am inclined to regard 

 them as an individualized race deserving a name. 



Fluminicola merriami Pilsbry and Beecher. 



Shell small, globose-turbinate, narrowly but distinctly and deeply 

 umbilicated. Spire low-conic, acute ; whorls 4, slightly shouldered 

 below the sutures, the upper-lateral portion rather flattened, periph- 

 ery and base convex. Surface smooth, horn-colored. Aperture 

 oblique, ovate, angled above, broadly rounded below ; upper portion 

 of the inner lip adherent to the body-whorl, lower portion arcuate, 

 without a callous thickening. 



Alt. 3, diam. 21 mill. 



Collected from a w'arm spring (temperature 97° F.) in Pahrana- 

 gat Valley, Nevada, by Dr. C. Hart Merriam, and submitted to the 

 writer by Dr. R. E. C. Stearns. 



This species diflfers from F.fusca H^Id., in the much more distinct 

 umbilicus, thin texture, and the non-thickened inner lip. 



Specimens may be seen in the National Museum (no. 123,626) 

 and the Academy of Natural Sciences collections. F. merriami will 

 be figured in the m6nograph of American Avvdcolidce now in 

 preparation by Mr. C. E. Beecher and the writer. 



GENERAL NOTES. 



A CORRECTION. In the Marcli Nautilus, p. 127, line 13, instead 

 of he says read Prof. Forbes says. — C. C. A. 



Exchanges. — We purpose to devote one of the inside cover 

 pages, hereafter, to offers of exchange, and all subscribers are 

 invited to offer their duplicates and call for their desiderata therein. 

 Exchanges will be inserted free of charge, but they should not 

 exceed five lines in length. — Eds. 



