638 BOSTON JOURNAL 



It varies in having the rufous thoracic margin very narrow 

 and even interrupted on the lateral margin. 



[Afterwards placed as a distinct genus Macrotelus Klug, 3Iono- 

 pJii/Ua Spin., both of which names were preoccupied ; I have 

 therefore substituted for them the name Elasmocerus. — Lec] 



, PRIOCERA Kirbj. 



P. INORNATA. — Black-piceous ; antennae and palpi yellowish ; 

 maxillary palpi with the last joint rather small. 



Inhabits Indiana. 



Body elongated, blackish-piceous, with pale hairs, punctured : 

 head, punctures somewhat confluent, so as to present a rather 

 granulated appearance: antennae honey-yellow, terminal joint 

 hardly larger than the preceding one : labrum piceous, obtusely 

 emarginate : mandibles piceous at base : maxillary palpi with 

 the terminal joint small : thorax with an obtuse tubercle each 

 side of the middle, on which is an indentation ; an impressed, 

 transverse line before the middle and a contraction behind the 

 middle ; an indentation on the basal margin ; punctures not pro- 

 found, transversely confluent : elytra with deeply punctured 

 striae : coxae and tarsi honey-yellow. 



Length two-fifths of an inch. 



This species agrees with all the characters of the present 

 genus, as laid down by Kirby, with the exception of the magni- 

 tude of the terminal joint of the maxillary palpi, which is much 

 smaller than that of the type of the genus. It is rare. 



[Belongs to Ci/matodcra. — Leg.] [ 162 ] 



To this genus, which was separated from Tlllus by Kirby, the 

 following species appear to belong. 



TiLLUS BicoLOR nob. Journ. A. N. S. vol. b, p. 194. 



TiLLus UNDULATUS nob. ibid. p. 174. 



CLERUS Fab. 

 1. C. QUADRISIGNATUS. — Posterior two-thirds of the elytra 

 black, with two broad whitish bands. 

 Inhabits North Carolina. Harris. 

 , Body rufous, somewhat hairy ; antennae black : palpi rufous, 

 iusky at base : thorax with an angulated impressed line : elytra 

 black, basal third rufous j a broad yellowish-white band on the 



[Vol. I. 



