34 Psyche [Sept.-Dee. 
is not correct. The type of this genus, and of Caryedes Hummel 
( brasiliensis Thunb. or its synonym faldermanni Manh.) is not 
congeneric with mimus Say, although showing certain points of 
relationship. Mimus belongs to Gibbobruchus Pic (as has been 
pointed out by Bridwell ’46, p. 54, after these notes were written 
and submitted to him), and is quite similar to both speculijer 
Gyll. the type and polycoccus Fahr. the other originally in- 
cluded species, with both of which I have compared it. The 
following characters and distinctions may be noted: 
Head not elongate, the antennal sockets practically con- 
tiguous to the mandibles; antennae not flabellate; pronotum 
strongly narrowed anteriorly, immarginate, its sides strongly 
expanding to the acute hind angles, its hind margin with a 
pronounced median lobe, its surface with a median longitudinal 
strongly elevated ridge (less strongly elevated in mimus than in 
the other two species) which bears a weak longitudinal median 
sulcus, and a somewhat stronger transverse, median depression, 
the lateral depressions as in Caryedes, but correspondingly 
more pronounced, the enclosed tubercle weaker; hind femora 
strongly incrassate, their width equal to J4 their length, the 
inferior surface finely bicarinate, the inner edge with a spine- 
like tooth near its apical third, followed by 4 acute teeth about 
J4 as long, not set in a notch, the outer edge denticulate from 
about its basal third to the apex; hind tibiae as in Caryedes; 
pygidium nearly vertical, in the J_ with a large apical glabrous 
area, (in polycoccus this is bituberculate), in the 9 densely 
pubescent throughout. This description applies equally to all 
three species, except as noted. 
Caryedes Hum. 
Head elongate, the antennal sockets removed from the base 
of the mandibles by the length of the first antennal segment; 
antennae not flabellate; pronotum strongly narrowed anteriorly 
and produced into a short neck, immarginate, its sides strongly 
expanding to the acute hind angles, its hind margin with five 
undulations, its surface with a broad, longitudinal, slightly 
raised area, of uniformly even surface, bordered on each side 
by a depression which extends to the side and hind angle, but 
surrounds a well-marked tubercle; hind femora strongly in- 
crassate, their breadth equal to 0.4 of their length, the inferior 
surface not bicarinate, its inner margin with a long preapical 
