S94i Entomological Papers. [No. 5. 



antennal joint. — The fact that this species has wings would render 

 an alteration in Erichson's diagnosis of the genus necessary it being 

 characterized therein as apterous. The elytra are not so much con- 

 tracted and rounded at the base, and, being longer than the thorax, 

 have therefore a more oblong, subquadratic appearance. As in the 

 above typical species they are, however, rounded at the sides and 

 broadest a little below the middle. They are about twice as broad at 

 the base as the adjoining part of the thorax and in their broadest part 

 rather more than a third wider than the broadest part of the thorax. 

 The third point in which the two species differ is the last joint of the 

 antennae which in this case is strongly truncated at the tip and 

 slightly excavated. They are further distinguished by the distribu- 

 tion of the colors, my species being of dark yellowish red, thorax 

 lighter, head, elytra and 3 last abdominal segments black, elytra 

 with 2 reddish spots at the apex, legs yellowish, at the apex of the 

 femora and base of the tibiae blackish, the mouth is brown, the 

 maxill. palpi yellowish with the 3 first joints dark at the base, the 

 antennae have the 6 basal joints dark excepting at the apex, where 

 they, as well as the 5 remaining ones, are yellowish. In all other 

 points I find the insect to agree entirely with the typical CE. Pa> 

 derinus ; the palpi, legs and anal segment of the abdomen are of the 

 same structure, the hairy vestiture is exactly the same in the differ- 

 ent parts of the body of my species as it is in the corresponding 

 ones of Erichson's. 



Jfc is perhaps wrong in me to describe an isolated species of this 

 extensive and difficult family. However, the gen. CEdichirus is one 

 so extraordinary that I am sure it will be noticed wherever the de- 

 scription of a new species of it may be found, be it by itself or 

 amongst those of other Staphylinidae. The case would be different 

 if the object of the description were a Homalota or the like. 



