44 INSECTA. 



cylindrical, and the abdomen ovoid or oval. The antennae always 

 consist of eleven distinct joints. The anterior thighs are inflated, 

 and even sometimes dcntated in several or at least in one of the 

 sexes. These Insects evidently form the passage from this tribe to 

 the following one. 



Sometimes the antennfe are entirely or almost entirely granose or 

 composed of short joints, either ovoid or globular, turbiniform, or al- 

 most hemispherical. 



Of these, some resemble the Pimcliariae of tlie last subgenera in the 

 dilatation and prolongation of the lateral margin of the head. Their 

 labrum is very short or projects but little. The lateral borders of 

 the thorax are straight or simply arcuated and rounded, and without 

 any angular or dentiform dilatation. The eyes are but slightly pro- 

 tuberant. 



Here the thorax is narrow, either cylindrical or in the form of an 

 elongated heart, truncated at botli ends. Such are 



Tagenia, Lat. — Stenosis, Herhst. — Akis, Fab. 



Where the antennae are almost perfoliate with the third joint 

 hardly longer than the following ones, and the eleventh or last very 

 small or united with the preceding one. The head is elongated 

 posteriorly, and borne on a kind of neck or knot. The thorax is in 

 the form of an elongated heart truncated at both ends. The abdomen 

 is oval *. 



PsAMMETICHUS, Lnt. 



Where the antennae are composed of turbiniform joints, of which 

 the third is much longer than the following ones, and the eleventh or 

 last, as large as the preceding, is very distinct. The head and thorax 

 form a long square of equal width. The abdomen is almost oval, 

 and truncated at its base f. 



There, the thorax is at least as wide as the abdomen, and of an 

 almost orbicular or square form, rounded laterally, and either isome- 

 trical or wider than long. 



ScAURUS, Fab. 



Where the last joint of the antenn?e is ovoido-conical and elon- 

 gated ; where the thorax is almost isometrical, and where the ante- 

 rior thighs are strongly inflated and frequently dentated in the males. 

 The tibiae are long and narrow. 



These Insects are peculiar to the hot and western parts of the 

 eastern continent :j:. 



ScoTOBius, Germ. 



Where the last joint of the antennae is hardly longer than the pre- 

 ceding and in the form of a reversed top; where the thorax is evi- 

 dently wider than it is long, and the lateral edges are strongly arcu- 



* Lat., Gener. Ciust. et Insect., II, p. 149 ; Flerbst., Col., VIII, cxxvii, 1 — 3. 

 •f- A subgenus established on some undescribed Insects from Chili. 

 X Oliv., Col., Ill, No. 62; Lat., Gener. Crust, et Insect., II, 159; Eucyc. 

 Miithod., article Scawe, 



