400 STAPHYLiNiDiE. [Geoclromicus. 



European catalogue ; our species G. nigrita is really a variety of G. p^a- 

 (jiatus, F., the type form not occurring in Britain ; the species differ from 

 AntliopJiMjus, with which they are united by many authors, by having 

 the penultimate joint of the maxillary palpi strongly dilated and pyriform 

 and evidently broader than the last joint, and also by the absence of the 

 small membranous plate beneath the tarsal claws, which is present in the 

 first-mentioned genus. 



I. Elytra more than twice as long as thorax j legs black 



with tarsi lighter ; form broader G. NIGEITA, Midi. 



II. Elytra scarcely twice as long as thorax ; legs 



reddish ; form narrower G. globulicollis, Zelt. 



G-. nigrita, Miill. {plagiatus, var. h, Heer, anthracinus, Bris.). 

 Deep black, shining, with greyish pubescence ; head in both sexes 

 somewhat narrower than thorax, rather deeply punctured, strongly im- 

 pressed in middle, with two oblique depressions more or less distinctly 

 marked ; antennse much longer than head and thorax, blackish brown, 

 or ferruginous ; thorax much narrower at base than apex, cordiform, 

 with sides strongly rounded in front and narrowed behind, posteiior 

 angles sharp right angles, not very closely and strongly punctured ; 

 elytra more than double as long as thorax, widened behind, with 

 shoulders raised and callose, not deeply but plainly and not very closely 

 punctured ; hind body finely and asperately punctured ; legs black or 

 pitch-black with tarsi lighter. L. 4|-5 mm. 



Male with the sixth ventral segment of hind body emarginate at 



apex. 



In moss at the sides of lakes, streams, and waterfalls ; Bewdley Forest ; Llangollen ; 

 Manchester district ; Scarborough ; banks of the Bolliii, Cheshire ; Northumberland 

 district, Wallington, Itothley Lakes ; rare on the Derwent and Irthing ; Scotland, 

 local, Sol way, Tweed, Dee, and Moray districts ; Ireland, Newcastle, co. Down. 



In the type form {G. plagiatus), which does not occur in Britain, the 

 elytra have a red band on each or a common red spot at suture ; Stephens' 

 Lesteva pRagiata is only a variety of L. lorigelytrata. 



Cr. g-lobulicollis, Mann. Smaller than the preceding, and easily 

 distinguished from it by its pitchy-red appearance, narrower form, and 

 much shorter elytra ; the thorax is proportionally longer and narrower 

 with the sides less rounded in front and contracted behind, and is more 

 finely punctured ; the punctuation of the elytra is much stronger than 

 that of thorax, and is deeper than in G. nigrita ; the legs are red or pitchy 

 red ; the species is rather variable in colour, some specimens being much 

 lighter than others. L. 4 mm. 



*o' 



In moss, &c.; a highland and alpine species, which has not been taken in Britain, 

 except on Snowdon and in Scotland ; rare ; Clyde, Tay, Dee, and Moray ilistricts 

 (Loch-na-gar, Ben Lomond, &c.). 



