Bnjaxis.'\ clavicornia. 97 



with a larger spine ; in this sex also the anterior tibiaj are acutely dentate 

 on their inner side before apex, and the intermediate pair are furnished 

 with a spur at apex. L. 1-H mm. 



lu moss, flood refuse, by swooping, &e. ; £^ouerally distributed and common through- 

 oat Enghuid ; recorded as cominou in tlio Noithumborlaiul district by IJold ; Scotland, 

 Lowlanils, iu spbngaum, very local, Tweed and Solway districts ; Ireland, near Dublin 

 and Belfast. 



S. impressa, Paiiz. (Dierohia impressa, Thorns.). Black or pitcli- 

 hlack, shining, with the elytra bright red, with suture and margins some- 

 times darker, palpi testaceous, antennae and legs pitchy, tibiae and tarsi 

 lighter than femora; liead and thorax impunctate or almost impunctatc, 

 the latter with the central of the three basal foveae minute ; this cliaracter 

 will easily distinguish it from all our other species except B. juncorum, 

 from which it may at once be known by its colour ; elytra about as long 

 as together broad, hardly visibly punctured ; abdonien shorter than 

 elytra, margined, the segments becoming gradually narrower towards apex. 

 L. If-lf mm. 



Male with the intermediate coxaj spinose, trochanters simple, inter- 

 mediate tibiae with distinct spurs. 



In haystack refuse, moss, refuse on the hanks of ponds, &c. ; local, bub sometimes 

 abundant where it occurs; London district, not common, Lee, Woking-, Eltham, 

 Strood, Tottenham, Lageiibaui ; New Forest; Shirley Warren, Southampton; The 

 Holt, Farnham ; Coleshill near Birmingham, in abundance; Needwood Forest, near 

 Bnrton-on-Ti-ent ; Aslduim Bog, York ; not recorded from the Northumberhmd and 

 Durham districts, and very doubtful as Scottish, the only record being " RaehilU, 

 Kev. W. Little," Murray's catalogue. I also feel some little doubt as regards the 

 record from Askham Bog. 



- EUPLECTINA. 



This tribe, which forms the second great division of our British 

 Pselaphida?, contains about fourteen or fifteen European genera of which 

 four are indigenous ; one of these, BibJnpor/is, has usually been classed 

 with Eupledus ; they differ from the Pselaphina in having the posterior 

 coxae conical, prominent, and contiguous, and in their more or less linear 

 form, but this latter character is not so marked in Triclionyx as in our 

 other three genera ; the four British genera may be distinguished as 

 follows : — 



I. Tarsi with two unequal claws Tbickoxtx, CJiaud. 



II. Tarsi with a single claw. 



i. Abdomen with the first visible dorsal segirent of 

 abdomen elongate ; last joint of antennaj very large ; 



form more convex Trisiium, Auhe. . 



ii. Abdomen with the first visible dorsal segment not 

 longer than second ; last joint of antennas moderate ; 

 form more depressed. 



1. Head distinctly narrower than thorax BrBLOPORTiS, Thorns. 



2. Head not narrower than thorax Euplectus, Leach. 



VOL. III. H 



