100 ACADEMY OF NATURAL SCIENCES 



Length three-twentieths of an inch. 



Found near the Missouri above the confluence of the Platte. 

 It is also an inhabitant of the Eastern States. 



[I do not know this insect. Erichson, Staphyl. 645, supposes 

 it to belong to Siinius. — Lec] 



OXYTELUS Gravenh. 



1. 0. PALLiPENNis. — Testaceous ; head black ; tip of the cly- 

 peus elevated and bidentate ; thorax wider than than long, with 

 an impressed line. 



Body pale testaceous, punctured, with very short hairs : head 

 black, punctures sparse before : eyes black, with a golden re- 

 flection : clypeus at the middle of the tip, elevated, prominent 

 and bidentated : antennae and carina at base, rufous pale : man- 

 dibles porrected, piceous, bifid to the middle ; superior segment 

 or tooth rather shorter than the other: palpi pale : thorax wider 

 than long, reddish-brown with an impressed dorsal line : elytra 

 dusky at tip and on the sutural edge : feet whitish. 



Leng-th about seven-twentieths of an inch. 



On the banks of the Missouri below the confluence of the 

 Platte river. 



[This and the three following belong to Bledius. — Leg.] 



2. 0. ARMATUS. — Pale reddish-brown; head black; carina at 

 base of the antennae piceous at tip. [1^6] 



Female. — Body light reddish-brown, punctured, a little hairy : 

 head black, punctures obsolete ; an abbreviated, vertical carina 

 over the anterior portion of the eye, terminating abruptly at the 

 origin of the antennas, and piceous at tip ; anterior angles of the 

 clypeus reflected : antennae and palpi pale rufous : mandibles 

 piceous : thorax length and breadth subequal, with a longitudinal 

 impressed line; punctures sparse ; edge blackish : elytra, punc- 

 tures distinct, numerous ; sutural edge blackish : thighs testa- 

 ceous. 



Length from one-fifth to one-fourth of an inch. 



Male. — Rather paler than the female; a tubercle between the 

 eyes : thorax with a longitudinal impunctured, dorsal line : tergum 

 darker at tip. 



Length one-fifth of an inch. 



[Vol. in. 



