214 
WILLIA:\I «. DIETZ, .M. I). 
median vitta, wider at the l)ase of condensed imi)escence. Elytral strife gener- 
ally more deeply impressed, two interrupted littes of condensed pubescence, ex- 
tending from the sides to the second interspace, where they unite; the space 
enclosed between these lines is not denuded, densely clothed on the underside 
with white ])ubescence; pygidium freely exposed. Legs slender, rufo-piceous. 
thighs feebly clavate, tooth small, posterior almost obsolete; anterior and middle 
tibim scarcely bisinnate internally. Long. 2.7 mm. ; .11 inch. 
Hub. — Florida, District of Columbia. 
A specimen in Mr. Dike’s collection, from District of Columbia, 
differs from the typical form by the pubescence being jiale yellowish, 
sparser and less coarse. 
This species might jiossibly be referred to the signatus group, with 
which, however, it has no close relationshiji ; the first and second 
ventral segments are relatively shorter, and there is no denuded 
elytral fascia. Dr. LeConte indicated this species under A. scutella- 
tus Gyll. ( Proc. Amer. Phil. Soc. vol. xv, p. Uh)), hut failed to de- 
•scrihe it. 
sig-natus Group. 
This group contains species of rather small size, and presenting a 
similarity of habitus which makes them easy of recognition. They 
agree with those of the preceding group in the abdominal formation; 
the first and second ventral segments, however, are genei’ally longer 
and nearlv ecjual in length, the gradual decrease in length commen- 
cing with the third segment, instead of the second, as in that grouii. 
The elvtra have a post-median denuded patch or fascia, surrounded, 
in the fresh state at least, by spots or lines of pubescence. They 
difier very little in sculpture, and are to be distinguished rather by a 
general assenddage of characters and habitus. The first two tarsal 
j(dnts are equal, or nearly so. 
The following table, supplemented by the Sjiecific description, will 
enable the student to identify his species: 
Elytral interspaces equal, or nearly so. 
Front foveate. 
Larger ami more robust, second joint of funicle distinctly longer than the 
third; prothorax strongly rounded on the .sides. 
Frontal fovea small, punctiform ; pubescence fine, inconspicuous. 
Elytra reddish, scutellar space and fascia darker, latter interrupted on 
the third interspace; beak less curved and more opaque. 
Elytra pitchy black, unicolorous ; fascia not interrupted; beak curved 
and more shining COiisiniilis. 
Frontal fovea large, elongate; pubescence coarse, conspicuous. 
vespertiiiii!^. 
