42 INSECTA. 



the western and southern parts of Asia, and the south of Europe and 

 Africa *. 



Other Pimeliariae, terminating the subdivision of those in which 

 the labrum is not received into a deep emargination of the anterior 

 border of the head, and in which this last part of the body is neither 

 truncated before nor narrowed behind, are distinguished from the 

 preceding by the following characters. The middle of the anterior 

 margin of this part projects in the manner of an angle or tooth. 

 The labrum does not appear when the mandibles are closed, or but 

 very little. The thorax is sometimes trapezoidal, almost as long as 

 it is broad, and at others almost orbicular or nearly semicircular. 

 The antennae are filiform, and the eleventh and last joint is always 

 very distinct from the preceding one. The mentum is incased infe- 

 riorly and covers tlie base of the maxill.ie. The pr?esternum is 

 slightly prolonged into a point in several. These Insects, like those 

 of the two following subdivisions, are exclusively peculiar to the hot 

 and western coiuitries of the eastern continent. 



Hegeter, Lat. 



The thorax forming a trapezium, almost as wide at the posterior 

 margin as the base of the elytra, and in contact with it throughout ; 

 the last joint of the antennae somewhat smaller than the preceding 

 one f . 



Tentyria, Lat. — Akis, Fab. 



The thorax almost orbicular, sometimes narrower than the abdo- 

 men, and at others of equal width, but rounded at the posterior an- 

 gles, and leaving an hiatus between them and the base of the elytra. 

 The last joint of the antennae is at least as large as the preceding 

 one |. 



Other Pimeliariae are removed from the preceding ones by the 

 form of their head and thorax. The first is a kind of square, more 

 or less narrowed behind, and the middle of its anterior edge presents 

 an emargination which receives the labrum. The dilatation of the 

 lateral margin covering tlie base of the antennae is greater, and pro- 

 longed to the anterior erlge. The latter organs are always composed 

 of eleven very distinct joints, almost cylindrical, the last few ex- 

 cepted, with the third very long. The middle of the outer side of the 

 mandibh's is deeply excavated, and the inferior sides of the head, 

 forming the lateral casing or frame of the maxillae and mentum, ter- 

 minate in a point, or in the manner of a tooth. The thorax is in the 

 form of a truncated heart, and well emarginated before in most of 

 them. These Pimeliariae comprise a great portion of the genus 



Akis, Fab., 

 Now restricted to those species in which the thorax is wider than 



* Zophosis nodosa, Germ., Insect. Spec. Nov., p. 133. 



t Lat., Goner. Crust, et Insect., II, p. 1.57 ; I, ix, 2; Pimelia silphoicles, OWv.; 

 — Gnalhosia (jlabra, Fischer, Entom, Russ., II, xx, 8. 



* Lat., Geuer. Crust, et Insect., II, 154; the Akis glabra, punctata, abhreriata, 

 angusiata, orhiculata, of Fabricius. I also think we should refer the Tagonse — Tagona, 

 Fischer, Eatom. Russ., I, xvi, 8, 9 — to this subgenus. 



