582 TRANSACTIONS OP THE 



Body minutely punctured ; head black ; antennae filiform, 

 brown ; four basal joints honey-yellow; palpi filiform, yellowish ; 

 thorax black, margined around with honey-yellow ', scutel black ; 

 elytra fuliginous ; a wide part of the base and narrow tip dull 

 honey-yellow ; tergum blackish, the segments piceous on the hind 

 margins ; beneath black piceous ; feet honey-yellow. 



Length over three-twentieths of an inch. 



[Belongs to Tachinns. — Leg.] 



2. T. MOESTUS. — Piceous, sericeous; thorax and elytra mar- 

 gined with dull yellowish, obscure. 



Inhabits United States. 



Body blackish, piceous, somewhat sericeous; mouth and antennae 

 dull yellowish ; the latter pale brownish towards the middle ; palpi, 

 penultimate joint thick ; last joint much shorter and acicular j 

 thorax dilated, convex, lateral and basal margins dull yellowish ; 

 elytra, basal, and exterior margins dull yellowish ; abdomen some, 

 what hairy at tip, beneath honey-yellow ; feet not or hardly spiny. 



Length less than three-twentieths of an inch. 



The paler margins of the thorax and elytra are sometimes al- 

 most obsolete. 



[Belongs to Conurus, and previously described as T. crassus 

 Grav] — Leg.] 



3. T. jocosus. — Black; thorax, elytra, feet and mouth yel- 

 lowish. 



Inhabits Indiana. 



Head black piceous, polished, convex, impunctured ; antenna? 

 honey-yellow (six ultimate joints wanting in the specimen) ; pal- 

 pi honey-yellow, terminal joint acicular ; thorax polished, im- 

 punctured, yellowish ; anterior and posterior margins blackish ; 

 scutel blackish ; elytra yellowish, with very fine, prostrate hairs ; 

 region of the scutel blackish; tergum, posterior margins of the 

 segments yellowish, longer than the elytra (in the preserved 

 state); feet pule yellow. 



Length one-tenth of an inch. 



[Afterwards described as T. arduus Er. — Leg.] 



4. T. VENTRIGULUS. — Black ; thorax each side and elytral 

 margin piceous. 



[Vol. IV. 



