COLEOPTERA. 43 
the head, strongly emarginated before, short, its posterior margin 
widely truncated, and the lateral edges turned up *. 
Another species—A. collaris, Fab.—in which the head mea- 
sured anteriorly is rather wider than the thorax, more prolong- 
ed posteriorly, and slightly strangulated at base in the manner 
of a neck, and where the thorax is much narrower throughout 
than the abdomen, small, convex, inclined and not turned up on 
the sides, forms the genus 
Exenopuorvus, Meger., Dey., 
Where the antennz are also somewhat longer than in Akis, and the 
eyes are narrower and emarginated. 
The last Pimeliarie of that division, in which the mentum is emar- 
ginated, are distinguished from the preceding ones by the manner in 
which it terminates: instead of being rounded and divided into two 
festoons, it is slightly emarginate or concave, with the lateral angles 
acute,and proportionally shorter and narrower at its base or more cor- 
diform ; it covers the maxilla. The eleventh joint of the antenne 
is not apparent; they are terminated by the tenth, which is somewhat 
larger than the preceding ones, turbiniform, and obliquely truncated 
at the end. In the form of the head, its anterior emargination, and 
frequently also in the figure of the thorax, these Insects closely re- 
semble the true Akis. In 
Eurycuora, Zhunb., 
The body is oval with ’acute and ciliated edges; the thorax semi- 
circular, and receives the head into an anterior emargination, the ab- 
domen almost cordiform. The antennze are composed of linear 
joints, compressed or angular, the third of which is longer than the 
preceding and following ones +. 
ApeEtostoma, Dup. 
These Insects have a narrow and elongated body, with an almost 
square thorax, slightly narrowed posteriorly; the antennz tolerably 
stout, almost perfoliated, and all the joints, the last excepted, nearly 
lenticular and equal. Their labrum, mandibles and palpi are con- 
cealed }. 
We will terminate the Pimeliarize with those in which the superio 
edge of the square mentum is neither emarginated nor widened. 
Their body is always oblong, and the thorax sometimes almost 
square, rounded or dilated, and at others narrow, elongated, almost 
* The first division of the Akis, Fab. See also Fischer, Entom. Russ., I, xv, 
7, 8, 9. 
+ Lat., Gener. Crust. et Insect., 11, p. 150; Schoenh., Synon. Insect., I, ii, 5 ;— 
Scheenh., Synon. Insect., I, i, tab. 2, 5. 
+ Adelostoma sulcatum, Duponchel, Mem. de Ja Soc. Lin. de Paris, 1827, XII, 
A, B, C; an Insect found in the environs of Cadiz by the son of that savant, at 
Tangier, by M. Goudot, Jun., but brought from Syria a long time ago by M. Labil- 
lardiére. 
E2 
