122 THE NAUTILUS. 



REMAKKS. Sorae fifteen specimens of this shell were taken in 

 1887, showing quite a disposition to variability, the sharp umbonial 

 angle being more or less depressed, and the wrinkles less numerous 

 and prominent. It does not group well with any species, but has 

 some characters which, perhaps, suggest an affinity with U.Antlioni/i 

 Lea, under which name it has been sparingly distributed, but differs 

 in being more rounded behind, rayed, in thecolor of epidermis, loca- 

 tion of point of greatest diameter, prominence of umbones, elevation 

 of umbonial ridge, and in the greater cavity of the shell and beak. 



The specimen in the cabinet of Mrs. Geo. Andrews is a magnifi- 

 cent one, and was collected in Florida by the late Mr. F. Rugel. I 

 dedicate this rare and beautiful species to my father, Dr. Samuel 

 Hart Wright, A. M., Ph. D., who shared the delights of rny Florida 

 collecting tour, and whose counsel in the study of the Book of 

 Nature, has always been an inspiration. 



Another Florida Unio was given this name by the late Dr. Wes- 

 ley Newcomb, but it was never published, its specific value being 

 doubted. 



Unio Oscari B. H. Wright. PI. II. tigs. 1. 2. :t. 



The original description of this species maybe found in NAUTILUS 

 March, 1W2, p. 124. 



Habitat : A creek from Lake Osceola, at Winter Park, Florida. 



Collections of G. W. and O. B. Webster, B. H. and Dr. S. H. 

 Wright, Museum Academy Natural Sciences, Phila., and National 

 Museum. 



Over 100 specimens of all ages of this well marked and beautiful 

 species were taken by the Messrs. Webster and submitted for exam- 

 ination. They are remarkably uniform in character and most 

 nearly related to f '. u/ienai* Lea, from which it differs in having a 

 smoother and nearly polisheil epidermis, cavity of the shell very 

 much deeper and the lateral teeth shorter, heavier and wider. This 

 shell lias been needlessly confounded with U. Hazelhurstianus Lea 

 of the Satilla River, Ga., from which it differs in being more 

 roughly furrowed (sides deeply grooved near the umbonial ridge 

 with ninri'iih-ii- roiiiidtt! fin-run-*) more inflated, thinner, more pointed 

 behind and more sharply angled on the posterior umbonial angle 

 and in having a reddish-brown epidermis instead of black, and the 

 teeth are much slenderer. 



This species is here figured for the lirst time. 



