Trognj^liloeus.'] STAPHYLiNiDiE. 387 



with rather close and fine greyisli pubescence ; head somewhat triangular, 

 contracted behind, distinctly narrower than thorax, thickly jiunctured ; 

 antennae moderately long, blackish or brownish, with first joint pitchy red ; 

 thorax transverse, subcordiforni, with sides strongly and somewhat angu- 

 larly rounded in front and contracted behind, thickly punctured, with a 

 distinct crescent-shaped impression along base, and two more or less plain 

 oblique fove?e on disc ; elytra broad, much wider than base of thorax, 

 closely and rather strongly punctured ; hind body narrower than elytra, 

 subparallel until near apex, where it is narrowed, finely and thickly 

 punctured ; legs pitchy brown, with the tarsi and sometimes the knees, 

 lighter. L. 3 mm. 



In mos?, flood refuse, at roots of f^rass, &c., on the banks of ponds and rivers; not 

 common; Hammersmith ; Tonbridge; Knowle, near Birmingham (on submerged logs 

 in the river Blythe (Blatch)) ; Repton ; Scarborough ; Northumbcrhind district, Wal- 

 lington (Power), banks of streams very rare (Bold); Scotland, local, Solway and 

 Tweed districts ; Ireland, Bray, co. Wicklow. 



T- bilineatus, StejDh. {nee Er.) {riparim, Lac, suspedus, Eey). 

 This species much resembles the preceding in general appearance ; it may 

 however, be easily distinguished by the absence of the crescent-shaped 

 furrow at the base of thorax, which is less angularly rounded in middle, 

 the lighter base of the antennse, and narrower elytra, which are somewhat 

 longer in proportion ; the antennae are rather longer and more slender, 

 dark with the first two or three joints red, or occasionally ferruginous 

 with the base lighter, third joint a little shorter than second, joints 4-7 

 oblong in the male, and suboblong in the female ; the elytra are clothed 

 with distinct and rather close pubescence, and are rather strongly punc- 

 tured; the legs are reddish-testaceous with the posterior coxae darker. 

 L. 2|-3 mm. 



Marshy places, in flood refuse, at roots of grass, &c. ; common and generally dis- 

 tributed throughout England and Scotland as far north as the Moray district, and 

 probably common in Ireland. 



In immature specimens the elytra and antennae are entirely reddish ; I 

 have a specimen, which appears to be mature, in which one antenna is 

 dark with red base, and the other entirely red. 



T. rivularis, Mots, (hilineatus, Er., nee Steph., Erichsoni, Sharp). 

 Very like the preceding^ and often confounded with it ; it is, however, 

 on the average, rather smaller, with the thorax not rugose or duller at the 

 sides as is the case with the preceding species ; the sides of the thorax 

 are more rounded in front, and the elytra are evidently more finely punc- 

 tured ; this latter character is perhaps the most satisfactory, some of the 

 others being only slightly apparent ; the dorsal furrows are often inter- 

 rupted, so as almost to form four separate foveas ; the legs are reddish 

 with the femora sometimes darker. L. 2i-2| mm. 



Under the same conditions as the preceding, but much less common; Dulwich, 



C c 2 



