Atomaria.] CLAVICORNIA. 331 



A. Transverse basal impression of thorax without 



a fold at each side. 



a. Antennae very short and stout ; elytra 

 dark, lighter towards apex, the colour not 

 being well defined, and sometimes obscurely 



marked *. A. FUMATA, Er. 



b. Antenna) longer and less stout. 



a*. Form shorter ; elytra shorter in propor- 

 tion to thorax ; antennae moderately long 



and stout. 



af. Elytra with a well-defined light spot 

 before apex ; punctuation of thorax 



close and strong A. BABANI, Bris. 



bf. Elytra usually lighter at apex, some- 

 times almost entirely yellowish-brown, 



but without well-defined light spot. 

 aj. Punctuation of thorax coarser and 



more diffuse A. NIGBIVENTBIS, Steph. 



bj. Punctuation of thorax close aud 



fine A. WOLLASTONI, Sharp. 



b*. Form narrower ; elytra longer in pro- 

 portion to thorax ; antennae elongate and 



slender. 



af. Thorax as long as broad, with punc- 

 tuation very close and deep ; form quite 



linear and parallel A. LINE ARTS, Steph. 



bf. Thorax slightly transverse, with punc. 

 tuation less close and finer ; form less 

 linear A. ELONGATULA, Er* 



B. Transverse basal impression of thorax deep, 



with a small raised fold at each side .... A. TTMBBINA, Er. 

 11. Thorax considerably narrower at base than base of 

 elytra. 



A. Size large ; colour dark ; elytra convex ... A. LONGICOENIS, Thorns. 



B. Size small ; colour testaceous or reddish -yellow, 



sometimes brownish ; elytra rather flat .... A. BADIA, Er. 



A. cliluta, Er. Entirely testaceous, rather depressed, with fine and 

 somewhat sparing pubescence ; antennse rather long and stout ; thorax 

 almost as long as broad, feebly rounded at sides, posterior angles right 

 angles, rather diffusely and finely punctured ; elytra elongate, sparingly 

 and very finely punctured ; in general appearance this species almost 

 exactly resembles G. ferruginea, but may at once be known by the 

 3-jointed club of antennas, the shape of the tibiae, and the finer and more 

 sparing punctuation and shorter pubescence. L. 1^ mm. 



Very rare ; Scotland, Tweed and Forth districts, Edinburgh, Falkirk, &c. 



A. flmetarii, Herbst. Oblong, subcylindrical, pitchy-red or fuscous, 



* The thorax of A. elorigatula appears to vary somewhat in breadth in proportion 

 to the elytra; some specimens might be classed with A. longicornis and A. badia in 

 this respect ; and it must, therefore, be regarded as forming a transition towards 

 them. 



