124 THE NAUTILUS. 



heart, unconsciously exhibited in numberless acts of kindness, 

 generosity and benevolence. 



So closed a life well rounded with fullness of years, of good will 

 and of generous service. R. k. c. s. 



A NEW FLORIDA UNIO. 



BY BERLIN II. WRIGHT, LAKE HELEN, FLORIDA. 



TInio Oscari, n. sp. 



Shell smooth, oblong, subcylindricul, greatly inflated; abruptly 

 rounded anteriorly below and subangular above ; basal margin 

 subemarginate, posterior margin truncate and biangular, dorsal 

 margin slightly arched ; valves solid and not thick ; beaks not 

 prominent and always eroded; epidermis reddish-brown, darker 

 toward the umbos and in the juveniles with fascicles of broad green- 

 ish and narrow' orange-colored rays; umbonial angle rather sharp; 

 posterior slope depressed in adults but broad ; sides deeply grooved 

 near the umbonial ridge with concentric rounded furrows; cardinal 

 teeth very broad but depressed and not thick, oblique, very vari- 

 able but usually double in the left and single in the right valve ; 

 lateral teeth curved and double in left valve ; cavity of the beak 

 nearly obsolete, cavity of the shell deep ; cicatrices well impressed, 

 the anterior distinct, posterior confluent, dorsal under the base of 

 the posterior branch of the cardinal tooth; nacre purple and some- 

 what iridescent. 



Diam. "8, length 1, breadth 2"4 in. {extreme). 



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 Acad. Xat. Sciences, Phila. and National 

 Museum. 



Remarks. Over 100 specimens of all ages of this well marked 

 and beautiful species were taken by the Messrs. AVebster and sub- 

 mitted for examination. They are remarkably uniform in char- 

 acter and most nearly related to U. Aheneus Lea, from which it 

 diflfers in having a smoother and nearly joo^is/iecZ epidermis, cavity 

 of the shell very much deeper and the lateral teeth shorter, heavier 

 and wider. 



