Enicmus.l olavicornia. 285 



Park ; Nunhead ; Duhvich, vcrj' commou in powdery fungus on birch (T. Wood) ; 

 Strettbrd (ou t\\2 wing, Restou) ; Sherwood Forest (Blatch). 



B. brevicornis, Mannli. {carhonarlus, Mannli.). Elongate, sub- 

 depressed, dull black, glaljrous ; liead and thorax rugosely punctured, 

 the former with an obsolete central channel or fovea, the latter with tlie 

 i;sual central and basal impressions, sides rounded in front and more or 

 less strongly contracted behind, anterior angles rounded and not marked ; 

 antennae very short with abrupt even club of which the second joint is 

 transverse, ferruginous-red ; elytra rather long and narrow, with two 

 oblique impressions before base, striee fine and finely punctured, inter- 

 stices flat, broad, and even, dull, alutaceous ; legs ferruginous. L. l|-2 

 mm. 



Under hark ; rare ; New Forest, first taken by Charles Turner, and subsequently 

 by other collectors ; Mr. Blatch lias also taken it on Cannock Chase under birch 

 bark. 



The short antennae and dull-black elongate elytra with their oblique 

 impressions and fine punctuation will at once distinguish this species ; 

 JE. nigosns is of the same colour, and is found under much the same 

 conditions, but it has longer antennae, and its elytra are less elongate, 

 and more convex^ with more obsolete punctuation and without oblique 

 impressions. 



Cil.SS,T03SB,S, Thorns. 



This genus contains four British species ; they are minute insects 

 with elongate head and thorax, and long parallel or subparallel elytra 

 which are more or less strongly sculptured ; the antennae are inserted at 

 some distance from the eyes, which are small ; one of our species is 

 exceedingly abundant, but two are very rare, and perhaps are im- 

 portations. 



I. Anterior half of thorax without central fovea; club 

 of antcnnsB S-jointed. 



i. Head and thorax red, elytra black or brownish- 

 black ; upper surface sometimes unicolorous ; 

 elytra with seven or eight rows of punctures on 

 each C. ruficollis, Marsh. 



ii. Colour, as a rule, uniform, testaceous or ferru- 

 ginous, very rarely coloured like C. ruficollis ; 

 elytra with only six rows of very strong punctures 

 on each C. elongata, Curt. 



iii. Colour uniform testaceous ; form very narrow ; 



elytra with seven or eight rows of punctures on each C. FILIFOemis, Gi/ll. 

 IT. Thorax with a broad round fovea 011 its anterior 



half ; club of antenn£B 2-jointed C. filum, Auhe. 



C. ruficollis, Marsh. (coUaris, Mannh., 7iamila, Mannh.). Elongate, 

 slightly convex, glabrous, head and thorax red, elytra black or brownish, 

 upper surface sometimes unicolorous reddish ; head longer than broad 

 with obsolete rugose punctuation, eyes small ; antennas rather long and 

 slender, testaceous ; thorax oblong, widest in front, narrowed behind, 



