ScopceilS.] STAPHYLINIDJ;. 311 



II. Head shorter, more or less subqnadrate ; antenna} short ; 

 elytra more coarsely punctured, more or less dull. 

 i. Head dull, about as closely punctured as elytra, and not 



less finely ; size smaller S. EUBIDU3, Ri/. 



ii. Head shiny, much more finely punctured than elytra ; 

 size larger. 



1. Intermediate tibire slightly dilated and rounded or 



almost rounded at apex ; head less finely punctured S. SULCICOLLIS, Sleph. 



2. Intermediate tibiaj rather strongly dilated, and very 



obliquely cut oft' at apex ; head more finely punc- 

 tured S. C0GNA.TU3, Rey. 



S. Srichsoni, Kol. {;/racilis, Sperk., apicalis, Rey). Linear, elon- 

 gate, rather depressed, pitchy-red, with the head and hind body, except 

 apex, usually darker, and the elytra lighter ; head somewhat ovate, 

 scarcely broader than thorax, forehead very broad, widely impressed in 

 front ; antennte testaceous, long and slender, almost as long as head and 

 thorax united, with the first joint long, rather broad, and somewhat 

 cylindrical, and joints 8-10 a little longer than broad ; thorax evidently 

 longer than broad, obliquely narrowed in front, and with posterior angles 

 strongly rounded, together with head exceedingly finely punctured, 

 furnished at base with two distinct impressions separated by a narrow 

 raised longitudinal keel ; elytra longer than broad, about a c[uarter longer 

 than thorax, depressed, extremely finely and thickly punctured, smooth 

 and rather shining ; hind body rather strongly margined, a little widened 

 behind, very finely shagreened ; legs reddish testaceous. L. 3-3| mm. 



Male with the fifth and sixth ventral segments of hind body slightly 

 impressed in middle, sixth slightly sinuate on apical margin, seventh 

 longitudinally impressed, with the apex broadly emarginate, the emargi- 

 nation being furnished with a tooth in centre. 



'O 



On the banks of streams, in flood refuse, &c. ; rare; North Wales; Slapton Ley, 

 Devonshire ; Scotland, rare, riparial, Solvvay district, Dumfries. 



S. Icevigafus, Gyll., has been often given as a synonym of >S'. EricJisoni, 

 but apart from other differences, in the shape of the head, &c., the male 

 characters are quite different, the emargination of the seventh segment 

 being deeper and terminating on each side in two strong teeth ; it is 

 possible that we possess both species. 



S. rubidus, Eey (suJicylmdricus, Scriba, Rj/ei, Woll.). Smaller and 

 narrower than S. sulcicoUis, and usually of a paler colour ; it may at once 

 be distinguished from our other species by the dull, opaque appearance 

 of its head and thorax which arises from the closer punctuation ; the 

 segments of the hind body are less divided iiiter se, and the legs are 

 thinner and less developed, the tarsi being evidently shorter ; in the male 

 the seventh ventral segment of hind body is foveolate on its disc, and 

 deeply and rather broadly emarginate at apex. L. 2| mm. 



This species has only occurred in one British locality, Slapton Ley, Devonshire, where 

 it was taken sparingly i)y Mr. Wollastou in May 18(59 and 1872 under stones in dry places 



