AMERICAN ENTOMOLOGY. 109 



latter edged with testaceous : feet black : anterior pairs of tibiie 

 often piceous. 



Ohs. This species is somewhat smaller than M. quadriinacu- 

 latus. It is closely allied to J/, tricolor. The second joint of 

 the antenna) of the male is dilated and irregular. Mr. Thomas 

 Nuttall first obtained specimens of the vlttatus in the 3Iississippi 

 region, where I have since met with it. 



The upper figure of the plate. 



Malachius OTIOSUS. — Specific character. Thorax rufous, 

 with a dilated longitudinal line ; antennae and elytra black. 



Malachius nigripcnnis nobis, Journ. Acad. Nat. Sciences, vol. iii. 

 p. 184. 



Desc. Body black, incon.spicuously hairy : head with three 

 obtuse indentations between the eyes ; antennae black ; labrum 

 and clypeus before, rufous : thorax rufous, with a much dilated 

 black line from the anterior to the posterior edge : elytra black, 

 with a very slight violaceous tinge : pectus pale rufous, or testa- 

 ceous ; origin of the feet black : postpectus black : venter black, 

 segments with more or less dilated, sanguineous margins; some- 

 times entirely sanguineous: feet black; anterior thighs some- 

 times pale. 



This species is readily separable from M. nigriceps by its infe- 

 rior size and blackish elytra and antennae, and by the circum- 

 stance that the black line of the thorax is continued to the 

 anterior edge. 



Count Dejean informs me the name ni'jrijjennis is preoccupied 

 in this genus ; I have therefore been compelled to change ^t. 



The lower middle figure. 



[Belongs to Anthocomus Er. — Lec] 



PHILANTHUS. Plate XLIX. 



Generic character. Labrum concealed ; eyes not extending to 

 the posterior part of the head, very slightly emarginate ; stem- 

 mata three ; antennae thicker towards the tip, inserted in the 

 middle of the fice ; nasus trilobate ; mandibles simple ; radial 

 cell one, elongated, acute at tip ; cubital cells three, the first 

 large, the second small, sessile, receiving the first recurrent ner- 

 vure, the third subquadratc, elongated at its exterior inferior 



