312 INSECTS. ORTHOPTBRA. 



nating in a triangular club ; body oval, narrower before ; tho- 

 rax square, flat. 



The species of this genus inhabit India, America, and the islands of the South Sea. 



E. Kir by anus, Oliv. Body shining black, with two brownish yellow 



spots on each elytrum. Inhabits India Lett. Gen. pi. 12, fig. 12. 



FAMILY III. PSELAPHII. 



Elytra short and truncated ; first joint of the tarsi short and 

 not distinct. 



I. Antennas with eleven joints. 



1. Two hooks at the end of the tarsi ; maxillary palpi slightly or not elongated. 



Gen. CHENNIUM, CTENISTES. 



2. One hook at the end of the .tarsi ; maxillary palpi long, projecting, and termi- 

 nated in a club. 



Gen. BYTHINUS, Leach, (to which Latreille unites Arcophagus and Tychus of 

 the same author) ; BRYAXIS, PSELAPHUS, (including the genus Eupkctcs 

 of Leach.) 



II. Antennae of six joints. 

 Gen. CLAVIGEB. 



Gen. PSELAPHUS, Herbst. Lat. Staphylinus, Lin. 

 Elytra shorter than the abdomen, truncated ; tarsi of three 

 joints, of which the first is very short, and the last terminat- 

 ed by a single hook ; antennae of eleven joints, the greater 

 part granulated, and the last large and ovoid ; maxillary pal- 

 pi projecting, terminated in a larger tumid joint, with a point 

 at the end ; labial palpi small, filiform. 



P. impressus, Lat. Body blackish ; elytra and feet rufous brown ; 

 thorax orbicular, convex, each elytrum with two impressed lines. 

 Inhabits Europe, among roots of grass. Lat. Gen. iii. 77- 



SECTION V. MONOMEFA. 

 Tarsi with but one joint. 

 Gen. CLAMBUS, Fischer. 



This genus is founded on the Dermestes Armadillo of De Geer. 



ORDER V. ORTHOPTERA. 



Elytra coriaceous, the margin of the one covering the margin of 

 the other ; mouth with mandibles ; wings folded longitudi- 

 nally, and sometimes besides transversely; metamorphosis 

 semi-complete. 



The Orthoptera (the Dermaptera of De Geer and others,) have large wings, dou- 

 bled or plicated longitudinally, like the rays of a fan, and sometimes traBsversely. 

 These wings are covered by two wing-cases or elytra, which are generally flexible, 

 coriaceous, and reticulated, sometimes horizontal, but oftener crossed over one an- 

 other at their inner margin, or inclined like a roof. The jaws are always terminal. 



