18 LAMELLICOPtNIA — GROTRUPTDAE. 



Winged. Thorax wrinkled in all directions, bordered at 

 base. L. 2^ 1. Eare. A. ricfa, Fab. 



GEOTB UI*inAM 



A, Anterior femora with a row of hairs on front. 



Club of antennae with third joint smaller than and 

 received by second, and this by the larger first ; lobes of 

 maxillae horny, inner one armed with two hooks, outer one 

 rounded. Odontaeus, Klug. 



JB, Anterior femora with a spot of hairs on front. 



Club of antennae with joints either entirely free or with 

 middle joint partly enclosed by the others ; lobes of 

 maxillae leathery, rounded, pubescent. Geotricpes, Latr. 



Odontaeus, 



Short ovate. Upper-side black or brown, sometimes 

 lighter ; under-side brownish-yellow. Elytra with strong 

 punctured striae ; anterior tibiae with eight teeth. Male 

 with a long, thin, gently curved, moveable horn on head ; 

 thorax with a horn and depression on each side, and two 

 teeth in middle. Female with two slight elevations on 

 forehead, and three prominences in front of thorax, L. 3 

 — 4 1. Eare, 0. mohilicornis, Fab. 



Geotv'upes, 



A, Club of antennae with plates free ; thorax of male 

 with three horns in front. 



Black, shiny, rather flat. Clypeus with an indistinct 

 longitudinal ridge in middle, forehead impressed in middle, 

 L, 7 — 9 1. Common. G. Typlioeus, Lin. 



jB. Club of antennae with middle plate half enclosed ; 

 front of thorax without horns. 



a. Body oblong oval ; hinder tibiae with three trans- 

 verse ridges on outer-side, 



I. Elytra with seven striae on each between suture 

 and humeral prominence. 



1, Mandibles twice sinuate on inner-side, straight 

 on outer-side. 

 Upper-side usually dull black, with margins of thorax 



