122 THE NAUTILUS. 
REMARKS.—Some 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. Anthonyi 
Lea, under which name it has been sparingly distributed, but differs 
in being more rounded behind, rayed, in the color 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 my 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, figs. 1, 2, 3. 
The original description of this species may be found in NauriLus 
March, 1892, p. 124. 
Habitat: A ereek from Lake Osceola, at Winter Park, Florida. 
Collections of G. W. and O. B. Webster, B. H. and Dr. 8. 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 U. aheneus Lea, from which it differs in having a 
smoother and nearly polished epidermis, cavity of the shell very 
much deeper and the lateral teeth shorter, heavier and wider. This 
shell has 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 concentric rounded furrows) 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 first time. 
