THE : CONCHOLOGISTS’ - EXCHANGE. 
105 
U. Anthonyi, Lea, Sig., personal name for I. 
G. Anthony R—=.57. 
U. aheneus, Lea, Sig., color of bronze, brass, 
or copper. R=.40, 
U. amygdalum, Lea, Sig., shaped like the 
almond, or its seed R—.70. 
U. augustatus, Lea, Sig., narrow, R=.39. 
U. arctatus, Con., Sig., a bow or arch, Notin 
Florida. R—.55. 
U. Blandingianus, Lea, Sig., personal name 
for Dr. Wm. Blanding, R—.65. 
U. Buckleyi, Lea, Sig., personal name for S, B. 
Buckley, R=.50. 
U. Buddianus, Lea, Sig., personal name for 
Dr. B. W. Budd, R=.51. 
U. coruscus, Gould, Sig., ‘flashing, glittering, 
R—.64. 
U. cacao, Lea. Sig., Bean of Theobroma cacao 
or coco, R=.69. 
This is found in West Florida. It has a 
squarish outline, flattish, chestnut brown, thick 
dental plate, and carina high. A small species. 
Unio Cunninghami, B. H. Wright, Sig. 
Personal name for S. L. Cunningham, the first 
collector of the species. Size of type 2 by 1% 
inches. Diameter 1 inch. R=56. Diame- 
ter being 90 per cent. of 1%, makes it very 
broad across the back. Epidermis usually a 
reddish black, shining, smooth above, and 
striate, and unlike below. Teeth all very 
~ heavy, nacre thick, salmon, white or purple. 
Cicatrices a// deeply impressed. A ventral 
cicatrix usually is found 4% or &% inch behind 
the smaller anterior cicatrix. The posterior 
slope is very depressed and the umbonial ridge 
being high, a flattened or almost truncated ap- 
pearance is given to the area below and behind 
the ligament, the carina being scarcely obsery- 
able. 
The lines of growth are numerous and close, 
showing that the shells, though small, are old, 
the full-grown specimens being about half or 
less in size than the mature U. Buckleyi, Lea, 
the diameter of which is .64 to .75, to which 
some persons are inclined to refer it. Its great 
breadth across the dorsum, small size, heavy 
teeth, and massiveness sufficiently distinguishes 
it from U. Buckleyd and all others. Habitat 
Lake Dora, and other lakes in Sumpter county, 
South Florida. It has a close affinity with U. 
coruscus, Gld., yet it is very distinct. 
U. Floridensis, Lea, Sig., name for Florida. 
R50. 
This is another West Florida species, and in 
the same waters as U. cacao, outline obovate, 
shell thin, light yellow as in the U. Anadon- 
toides, very narrow in front, rayless, lateral 
teeth very long and slender, cardinal teeth very 
small, width of shell 3 inches. Ul. fescatus, 
Lea, Sig. Dark, the color of the posterior 
slope, R=.53. Found in Black creek, Florida, 
width 1.7inches, dark brown, numerous minute 
green rays, valves ¢iz, and compressed behind. 
Nacre coppery. Some confusion exists about 
this species, other species of about the same 
size, with copper colored nacre, having been 
taken forit. WU. Jayanus, Lea, Sig. Personal 
name for Dr. J. C. Jay. R=.48. As Lea 
named this from a pair of unmated valves, 
there has been some trouble with it since, and 
is a species not well known. Valves thin 2.5 
by 1.2 inches, color brown, rayless, lateral 
teeth long and straight. It has an up-turned 
nose, some like U. xasufus. Habitat Lake 
Woodruff, Florida. Rather rare. 
To be Continued. 
WE propose to issue the number for March 
much earlier, or know the reason why; and 
to that end, have shortened this issue. The 
articles by the Rev. Wm. M. Beauchamp, Mr. 
B. Shimek, and Mr. Harry A. Pilsbry, will 
appear in the next number. Several prominent 
writers have been added to our list of corres- 
pondents, while we cordially extend to all, the 
privilege of contributing any articles, either 
critical or descriptive, which will have the 
tendency to make the literature of Conchology 
more popular, terse and handy.—[ Ep. 
