18 Flemiptera-Heteroptera. 
Anterior margin of the head more or less emarginate, 
margins of head and pronotum without hairs 
Eyes viewed from the front nearly semicircular, 
exserted from the head for about half their 
width . A : : , ‘i . ‘ . SEHIRUS. 
Eyes viewed from the front transverse, exserted for 
nearly three-quarters of their width : . GNaTHOCONUS. 
GEOTOMUS, Mauls. and Rey. 
A small genus containing a few very closely allied 
species; of these we have only one in Britain, which may 
be easily known by the long hairs of the pronotum and 
head from those of any of the other British genera of this 
family. 
G. punctulatus, Costa ; (thus levis, D.and 8.).—Oval, 
shining, pitchy black, inclining in immature examples to 
piceous, or even testaceous brown ; antennv and legs piceous. 
Head semicircular, the eyes hardly exserted beyond the 
lateral margins, margins with long hairs, pronotum with 
the anterior margin strongly concave, the sides regularly 
rounded, the base nearly straight, surface impunctate in 
front, punctured posteriorly ; scutellum deeply and closely 
punctured ; elytra sparsely so, membrane whitish; legs 
with the tibize closely and strongly spinose. 
L. 33-4 mm. 
White Sand Bay, near Land’s End, Cornwall, under 
stones, Hrodium, etc. ; two specimens under stones, Cow- 
bridge, 8. Wales, Billups. 
SEHIRUS, 42. 8. 
A genus of blue or black species often with white 
markings, they occur generally by sweeping or in sandpits. 
The glabrous margins of the head and pronotum distin- 
guish it from Creotomus, and the form of the eyes from its 
nearest ally, viz. Gnuthoconus. 
6) 1. More or less spotted or marked with white 
(8) 2, Sides of pronotum and corium only margined 
with white  . : : ; : . DUBIUS. 
