Atamariina.] CLAVICORNIA. 829 



and the upper surface is more or less sparsely pubescent and not setose ; 

 the tarsi are 5-jointed in both sexes, except in Ccenoscelis. 



I. Posterior tarsi of male 4-jointed ; form elongate ; club 



of antennae apparently 2 -jointed ......... C^NOSCEHS, Thorns. 



II. All the tarsi in both sexes 5-jointed ; form oblong or 



oval ; club of antennae distinctly 3-jointed. 

 i. Form oblong or oval ; antennae with the middle joints 

 alternately longer and shorter ; upper surface more or 



less distinctly punctured and pubescent ATOMABIA, Steph. 



ii. Form oval or almost circular ; antennae with joints 

 6-9 subequal ; upper surface almost smooth, scarcely 

 punctured or pubescent EPHISTEMUS, Westw. 



CJENOSCEIiXS, Thomson. 



This genus contains one or two species which were divided off from 

 Atomaria by Thomson ; they are distinguished by the 2-jointed club 

 of the antennae, and the plainly marked side-edges of thorax, and also 

 by having the tibiae, especially the anterior ones, considerably dilated 

 towards apex ("nastan spadlika," "almost spade-like," Thorns. Skand. 

 Col. v. 267) ; our single species is rare, although it is widely distributed, 

 and probably occurs in many other localities than those that have been 

 recorded. 



C. ferrug-inea, Sahib, (pallida, Woll.). Elongate, parallel-sided, 

 entirely testaceous, except eyes which are black, clothed with thick pale 

 pubescence, punctuation very fine ; head triangular, antennae stout with 

 an apparently 2-jointed club ; thorax subquadrate with sides only slightly 

 rounded, side margins strong, basal margin produced before scucellum, 

 basal depression deep and terminated by a longitudinal stria on each 

 side ; elytra rather depressed, with long pubescence set in rows, more 

 finely punctured than thorax ; legs testaceous, tibiae widened towards 

 apex. L. 1| mm. 



By sweeping at twilight ; also in flood refuse, &c. ; occasionally taken in the 

 runs of Formica fuliginosa ; rare ; Chatham, Caterham, Claygate, Mickleham, Bird- 

 brook ; Yarmouth ; Fulbourn, near Cambridge ; Cotswold Hills, Gloucestershire ; 

 Scarborough. 



ATOMARIA, Stephens. 



This genus comprises a large number of very minute insects which 

 vary much both in form and colour, and have been divided by Thomson 

 and others into two genera and several sections ; about seventy species 

 are enumerated in the Munich catalogue, but others have since been 

 added ; they occur chiefly in Europe and Northern Asia, but a few 

 species have been found in Madeira and the Canary Islands, and one at 

 least has been recorded from the Cape of Good Hope ; they live in moss, 

 vegetable refuse, fungi, &c. ; some of the species are very hard to dis- 

 tinguish, and many of them require a careful comparison with type 

 specimens before they can be determined with any degree of certainty. 



