Lygeide. SI 
(30) 31. Surface not pubescent eee Acomrus. 
(25) 32, Anterior femora with one or more 
spines. 
(54) 33. Head small, much narrower than the 
pronotum . : ° - . PLINTHISUS. 
(83) 34. Head as wide or wider than the 
anterior margin of the pro- 
notum. 
(56) 35. Anterior femora with one or two fine 
spine-like teeth . : Drymus. 
(85) 36. Anterior femora with a strong feocth 
and several finer ones, or ouly 
with several small teeth. 
(38) 37. Anterior femora with a strong tooth 
and smaller ones. RuyPaROCHROMUS. 
Qn) « 
(87) 88. Anterior femora with a row of small 
teeth near the apex . ‘ . TROPISTETHUS. 
PLOCIOMERUS, Siwy. 
Easily known from any of our other genera by the 
ecarinate sides and constricted waist of the pronotum. 
Head with the eyes not touching the pronotum, ocelli very 
distinct, antenniferous tubercles strongly defined ; antenne 
with the basal joint reaching beyond the apex of the face 
for about a third of its length, cheeks much shorter than 
the central lobe, rostrum not quite reaching to the inter- 
mediate coxe; pronotum with the sides more or less 
rounded in front, then deeply sinuate, and again slightly 
rounded to the posterior angles, the constriction of the 
sides continued across the disc ; scutellum simple; elytra 
subparallel-sided ; membrane developed; legs with the 
anterior femora incrassate, with strong spines. ‘T'here are 
six recorded European species, of which we have two 
in our list. There is a third species, Luchsii, found in 
Sweden, which we may yet hope to add to our fauna; it is 
a mountain species. 
(2) 1. Pronotum with the sides only slightly 
rounded in front of its waist, without fine 
erect pubescence . . FRACTICOLLIS. 
(1) 2, Pronotum with the sides much rounded in 
front of the waist, clothed with fine erect 
pubescence . ' ; : : : . LUBIDUS. 
G 
