1878.] | 517 [Horn. 
Head moderately convex and punctate. Thorax twice as long as wide, 
apex and base equal, sides very feebly sinuate at middle, lateral margin 
almost entirely obliterated, surface moderately punctate. Elytra one-fourth 
longer than head and thorax, declivity slightly flattened, surface with 
finely punctured striz, the sutural rather deeply impressed at the declivity, 
intervals with a single row of fine punctures. Body beneath sparsely, ab- 
domen more densely punctate. Length .22-.26 inch; 5.5.-6.5 mm. 
The identity of our species with mustela has been. deter- 
mined by comparison with one of Mr. Pascoe’s specimens 
which Mr. Alex. Fry kindly gave to Dr. LeConte. I have 
very little doubt that the Fabrician name should prevail, but 
there is no other description published since the original, 
which is too short to enabie one to identify the species in 
the absence of the type. 
Occurs in North Carolina, Florida, Louisiana and in the 
Amazon region (Bates). 
AGLENUWS Erichs. 
Antenne free at the base, eleven-jointed, first joint rather stout, second 
cylindrical as long as the first, third nearly as long as the second, four. to 
eight sub-equal, gradually broader, last three joints forming a fusiform 
mass. No antennal grooves. Mentum broad and short, supported by a 
distinct gular peduncle. Terminal joint of palpi oval, slightly truncate at 
tip. Eyes entirely absent. Anterior coxe small, globular, narrowly sepa- 
rated by the prosternum which is oval at tip, cavities open behind. Middle 
coxee narrowly separated. Posterior cox transverse, separated by a trian- 
gular, abdominal process. Tibiz very slightly dilated at tip, terminated 
by short spurs. Tarsi short, the first three joints short, equal, last joint 
nearly as long as these together. First joint of abdomen slightly longer 
than the others, which are sub-equal. Scutellum not visible between the 
elytra. 
All authorities agree regarding the position of this genus 
so far as its family affinities go, and all leave it where Erich- 
son and Lacordaire have placed it, but I can find no refer- 
ence to its most important character in any of the books— 
the open anterior core. Duval (Gen. Col. Eur.) states par- 
ticularly that the first three abdominal segments are closely 
connate, this seems to me not so, and I believe there is a cer- 
tain amount of mobility in Aglenus, and also in Cerylon, 
Philothermus'and Discoloma. There is certainly not the same 
fixity of structure that we find in the preceding tribes. 
PROC. AMER. PHILOS. soc. xvit. 101. 37. PRINTED JUNE 3, 1878. 
