Anryrophorus.'] stapiiylinid^. 385 



pubescence of the hind body rathcu- finer and more f^'olden, and the 

 punctuation of the head and thorax a little less fine and less close, and 

 of the elytra somewhat stronger ; the pubescence of the elytra also is 

 more golden and rather less thick than in A. longipennis, and the antennae 

 are a little lighter. L. 3|-4 mm. 



On the sides of streams and waterfalls, in damp moss ; very local ; Tonbridge ; 

 Senrborough ; Northumberland district, banks of Irthing, taken abundantly at Yet- 

 holm by Mr. Crotch; Scotland, not common, Solway, Tweed, and Forth districts. 



TROGOPHXiCEUS, Mannerheim. 



This genus comprises, as at present constituted, rather more than one 

 hundred described species, and is probably one of the most extensive of 

 all the genera of Staphylinidse ; about a third of these species are found 

 in Europe, and the rest are widely distributed over the surface of the 

 globe, representatives occurring in Siberia, India, Ceylon, Cuba, ISTorth 

 America,* Brazil (Amazon districts), New Guinea, Australia, &c. ; there 

 are eleven British species, omitting T. spinicollis, Kye, which rests on a 

 single specimen found near Manchester and was probably an importation ; 

 some of these are extremely closely allied and hard to determine ; they 

 are for the most part very small and insignificant-looking insects, and are 

 slow in their movements ; their usual habitat is in muddy places near 

 streams and ponds, where they hollow out for themselves small galleries ; 

 they are therefore found abundantly, as a rule, in flood refuse ; they often 

 occur, however, in haystack and vegetable refuse, hotbeds, &c., especially 

 in damp places ; their form is linear and parallel ; the scutellum is quite 

 hidden ; the thorax is quite level in some cases, but is almost always 

 furnished with more or less distinct furrows or foveas on disc ; the follow- 

 ing table of the species may be found of some service, but they are very 

 hard to tabulate satisfactorily ; the species are divided by Thomson, 

 Mannerheim, Rey, and others into three genera, Carpalimus, Trorjoplilams, 

 and Tcenosoma, according to the sculpture of the thorax and the relative 

 length of the second and third joints of the antennae ; although this 

 latter character is on the whole a useful one, yet it is rather confusing in 

 certain cases, as may be proved by the fact that Eey places T. fuli(jinot<us 

 under Trognpldocus verus, whereas Thomson places it under Tcunosoma ; if 

 however, we take out this latter species, which is very easily distinguish- 

 able by other characters, the distinction will be found to be in most cases an 

 easily recognized one. 



I. Thorax marked at base with a strong crescent-shaped 

 furrow ; third joint of antennre about equal in length 

 to seccnd; length 3 mm. (Sub-Gen. Carpalimus, 

 Steph.) T. ARCUATUS. Steph. 



* Leconte mentions fifty species, mostly undescribed, from America, north of 

 Mexico. 



VOL. II. C 



