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 



Elenophorus, Meger.^ Dej., 



Where the antennae 'are also somewhat longer than in Akis, and the 

 eyes are narroAver and emarginated. 



The last Pimeliari?e of tliat 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 cmarginate or concave, with the lateral angles 

 acute, and proportionally shorter and narrower at its base or more cor- 

 diform ; it covers the maxilise. The eleventh joint of the antennae 

 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 



EuRYCHORA, Thunb., 



The body is oval Avith acute and ciliated edges ; the thorax semi- 

 circular, and receives the head into an anterior emargination, the ab- 

 domen almost cordiform. The antennae are composed of linear 

 joints, compressed or angular, the third of which is longer than the 

 preceding and following ones f, 



Apelostoma, Dup. 



These Insects have a narrow and elongated body, with an almost 

 square thorax, slightly narrowed posteriorly ; the antennae tolerably 

 stout, almost perfoliated, and all the joints, the last excepted, nearly 

 lenticular and equal. Their labrum, mandibles and palpi are con- 

 cealed t. 



We will terminate the Pimeliariae with those in Avhich the superior 

 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. 



, t Lat., Gener. Crust, et Insect., II, p. 150 ; Schoenh., Synon. Insect, I, ii, 5 ; — 

 Schoenh., Synon. Insect., I, i, tab. 2, 5. 



+ Addostoma sulcatum, Duponchel, Mem. de ha 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, Jan., but brouglit from Syria a long time ago by M. Labil- 

 lardiere. 



e2 



