Scydmcenus.'] CLAVICORNIA. 79 



of the elytra ; the general form too is broader and the elytra are wider 

 and more convex ; the basal foveae of thorax are somewhat different, the 

 central pair being often rather indistinct ; the legs are yellow, with the 

 femora somewhat inflated at apex. L. 1| mm. 



In marshy and damp places; rare ; taken at Wimbledon, Birdbrook (Essex), and 

 Soaton, Devonshire, by Dr. Power, who had the specimens separated as distinct in 

 Lis collection for some time before he requested me to describe it. 



S. exilis, Er. (tricolor, Denny ; vicinus, Chaud.i; Stenichnus exilis, 

 Thorns.). The smallest of our species of Scydmcenus proper ; of much the 

 same form as S. pusillus but smaller; rufo-castaneous with the head and 

 thorax usually darker, sometimes black, antennae and legs rufo-testaceous, 

 tarsi yellow ; head with eyes, which are rather large, narrower than 

 thorax, antennae rather long, gradually thickened to apex ; thorax a little 

 longer than broad, feebly cordiform, impunctate, with an indistinct basal 

 furrow, but with the usual foveae only indicated ; elytra long oval, finely 

 and sparingly punctured, with only one distinct fovea at the base of 

 each, the fovea near shoulder being shallow and usually more or less 

 obsolete, humeral fold absent. L. 1 mm. 



Male with the anterior femora a little more thickened than in the 

 female. 



Under bark ; rare; Chatham, Leith Hill, Cobham Park, EUmpstead, Loughton ; 

 Norwich; New Forest; Netley ; Parkhurst Forest, l.-le of Wight; Sutton Park and 

 Coleshill, near Birmingham ; Bewdley Forest ; Hopwas Wood, Tamworth ; Cannock 

 Chase ; Sherwood Forest (in some numbers) ; Ilipon ; Scotland, Highlands, very 

 rare, under bark of dead trees, Clyde and Tay districts. 



EUCONNUS, Thomson. 



This genus contains about fifty European species ; four of these are 

 British, one of which, E. fimetarius, is considered by many authors as at 

 most a variety of E. liirticollis ; the character presented by the antenna 

 seems however to be specific ; E. denticornis is rather a large species and 

 is very easily known by the characters of the antennae in the male, 

 whereas E. nanus is the smallest of all our Scydmaenidse and certainly 

 appears to be genetically different. The characters of the genus have 

 been pointed out above (p. 76). 



I. Antennae with four-jointed club. 



i. Size larger; male with the 8th and 9th joints of 



antennae dilated, securiform E. DENTICORNIS, Mill I. 



ii. Size smaller; joints of the antenna; simple in both 

 sexes. 



1. Antenna? distinctly shorter and less slender with 

 the joints less elongate; pubescence of elytra 



closer E. PIMETAKIUS, Ckaud. 



2. Antennae distinctly longer and more slender with 

 the joints more elongate; pubescence of elytra less 



close E. HIRTICOLUS, III. 



II. Antenna? with three-jointed club ; size very minute . E. NANUS, Schwm. 



