the British Species of the Genus Evplectus. 51 



Euplectvs pusillus, Aube, 1. c. p. 59, sp. 11, pi. 93, fig. 3. 



, Denny, Monogr. p. 15, s. 6, pi. 2, fig. 2. 



, of Stephens's Collection. 



rujicornis, of Stephens's Collection. 



Scarcely equal to E. Karstenii in length, and distinctly narrower, 

 and more linear in form than that insect ; it is of a pilch colour, 

 or pitchy-brown, finely pubescent and glossy, with the legs, base 

 of the antennae, and parts of the mouth testaceous. The head is 

 fully as broad as the thorax, with a distinct fovea behind on the 

 vertex, and two deep grooves commencing in two fovese behind, 

 and converging strongly towards the fore part of the head ; the 

 raised area in the region of the eye is punctured. The thorax is 

 fully as broad as long, contracted behind, and broadest near the 

 fore part ; the angles obtusely rounded ; the three foveas behind 

 are deep, and the central one is the largest ; the transverse groove 

 which unites them is also deep — there is no trace of a discoidal 

 fovea ; the surface is polished, and has minute scattered punc- 

 tures. The elytra can scarcely be said to be punctured ; they are 

 about equal to the head and thorax in length, and about one-third 

 broader than the thorax ; the sutural stria is well marked, and 

 external to this, at the base of each elytron, are two foveolse, the 

 outermost of which is not prolonged into a stria, as is generally 

 the case. The male has the terminal spur to the middle tibia well 

 developed. 



I possess but two specimens of this species, taken by me many 

 years since, I believe in the neighbourhood of London. It seems 

 to be rare in cabinets. 



Euplectus ambiguus, var. ? 

 I possess a single specimen of an insect which agrees most 

 closely in all its characters with the E. ambiguus, but which differs 

 in having the head, thorax and elytra most thickly punctured and 

 rugulose throughout ; I cannot, however, but think it is an ac- 

 cidental variety. 



Sect. 3. Thorax with the three fovece near the base isolated — not 

 united by a transverse depression. 



8. Euplectus bicolor, Denny, Monogr. p. 1 7, sp. 7, pi. 2, fig. 3. 1 825. 

 -, of Stephens's Collection ( ^ )• 



— , Aube, Monogr. p. 57, sp. 9, pi. 93, fig. 1. 



Pselaphus glabriculus, Gyll. Ins. Suec. iv. p. 236, 13. 1827? 

 Pitchy-black, with the legs and antennae pale testaceous, shorter 



E 2 



