IJahrocer 171(1'.'] staphylinida:. 219 



posterior coxte, whicli are large, triangular, and prominent ; from the 

 2''rirJi(iphi//ti((', -which they resemble in having the antennas slender, 

 capillary, and verticillate-pilose with the first two joints dilated, they are 

 distinguished by having the sides of the elytra margined, as well as 

 by the shape of the posterior coxse ; in general form they are very unlike 

 Tric/iojiJn/a, being more narrowed behind and less depressed, and more 

 closely allied to Tacliyporus, which our single species much resembles in 

 general contour ; only one genus is known. 



KABROCERUS, Erichson. 



This genus contains at present four species, one from Europe, one 

 from Chili, and two from North America ; they live in refuse, dead 

 leaves, under dry dung, &c. ; they are rapid and jerky in their 

 movements. 



The larva of Hahrocerus cajAllaricornis is described by Eey (Brevi- 

 pennes, 1883, p. 6) : it is elongate, rather convex, slightly enlarged and 

 rounded behind, almost smooth, of a livid pitchy testaceous colour, and 

 shining, furnished with long setae ; head large, as broad as thorax, 

 antennaj short, pale ; prothorax-subquadrate, somewhat narrowed in front, 

 with the sides straight ; meso- and meta-thorax transverse, about equal ; 

 abdomen with the first eight segments short, subequal, the last narrower 

 and furnished with two jointed cerci, of which the first joint is elongate, 

 and an anal appendage, which is conical and truncate, and not as long 

 as the first joint of the cerci ; legs short, pale. The pupa is pale tes- 

 taceous or whitish, and presents no marked peculiarity, 



M. Key says that he has found the larva, with the perfect insect, in 

 company with the larvae of Sccqjidsoma agaricinum in rotten wood 

 infected with fungoid growth. 



H. capillaricornis, Grav. Upper surface entirely black or pitchy 

 black (dark pitchy red or even testaceous red in more or less immature 

 specimens), with the extreme margins of segments of hind body reddish ; 

 convex, shining ; head and thorax smooth ; antennae slender, capillary, 

 and filiform, a little longer than head and thorax united, darker or 

 lighter pitchy testaceous, with joints 1-2 dilated, and 4-10 oblong, 

 somewhat fusiform, of almost equal length or gradually slightly shorter ; 

 thorax transverse, as broad behind as elytra, moderately contracted in 

 front, with the anterior angles obtuse, and the posterior angles broadly 

 rounded ; elytra slightly transverse, about as long as thorax, obsoletely 

 shagreened, and also sparingly and obsoletely punctured ; hind body 

 very finely and thickly punctured, with the sides fuimished Avith long 

 setffi (which are also present in less numbers on the front parts) ; legs 

 lighter or darker testaceous. L. 2| mm. 



O ^ 3 



Sixth ventral segment of hind body broadly truncate in male, emar- 



