GEOTEUPES. 19 



and elytra bill isL ; nnder-side violet, shiny. Disc of thorax 

 diffusely and finely punctured ; segments of abdomen 

 almost hairless in middle beneath. Male with third tooth 

 from apex of anterior tibiae bent downward ; posterior 

 femora with a large tooth on nnder-side and a second, 

 smaller one formed by apex of trochanters. L. 7 — 11 1. 

 Common. G, mesoleius, Th. (stercorarius, Sharp's Cat.) 



2, Mandibles once sinuate on inner-side, outer-side 

 rounded. 

 Shiny. Upper-side blue-black ; under-side steel-blue. 

 Rather more oblong than G. mesoleius, with disc of thorax 

 smooth and striae on elytra not so well defined, with more 

 arched interstices. Segments of abdomen evenly hairy 

 throughout beneath. Male with two small, equal teeth on 

 posterior femora and a smooth ridge on hinder side of an- 

 terior tibiae. L. 8 — 11 1. Common. 



G. stercorarius, Lin. (putridarius, Sharp's Cat.) 



XZ. Elytra with nine striae on each between suture 

 and humeral prominence. 



Rather more oblong and convex than G. stercorarius. 

 Shiny. Colour variable, usually on upper-side blue-black, 

 on under-side steel-blue. Outer-side of mandibles strongly 

 and evenly rounded, indistinctly sinuate at apex ; disc of 

 thorax smooth ; alternate interstices on elytra narrow. 

 Male with two pointed teeth (larger than in G. 2^utriclari2is) 

 beneath posterior femora, and a toothed ridge on hinder side 

 of anterior tibiae. L. 8 — 11 1. Moderately common. 



G. mutator, Marsh. 



&. Body nearly hemispherical ; hinder tibiae with two 

 transverse ridges on outer-side. 



J. Mesosternum without prominence. 



Upper-side blue-black, bluer at margins, under-side blue 

 or violet ; antennae (except first joint) and palpi red-brown. 

 Clypeus with distinct prominence ; thorax diffnsely punc- 

 tured ; elytra with feeble striae, interstices with confused 

 transverse scratches. Spot of hairs on anterior femora 

 golden-yellow. L. 5 — 81. Common. G. sylvaticus,V?a\z. 



II. Mesosternum with conical prominence. 



1, Thorax covered with a diffuse punctuation, 

 the interstices being closely and finely punc- 

 tured, 



c 2 



