837 



.age punctatls, hoc subcampanulato, basi medio impresso, elytris fortiter piinc- 

 Tulatis, pedibus fiavo-ruHs, genubus, tibiis apice tarsisque cceruleo-nigris, anten- 

 nis nigris exius incrassatis. Long. ?. 



Lytta cenea var. Say, Lorm's Exped. St. Peter's R'ver, 2, 28S. 



One specimen, Illinois. Mr. Rathvon. Brassy olive colored, without lustre ; 

 head finely and sparsely punctured, pilose, with short, gray hair, slightly dilated 

 behind the eyes, which are moderate, truncate at base, obsoletely emarginate. 

 Labrum blue, deeply emarginate. Antennee black, about as long as the head 

 and thorax, moderately thickened externally, outer joints conical, rounded , last 

 joint less constricted than in the two preceding. Thorax scarcely narrower than 

 the head, obsoletely sparsely punctured, slightly pilose, cannpanulate, sides pa- 

 rallel, disc slightly flattened, obsoletely channelled, middle of the base slightly 

 reflexed. Elytra nearly twice as wide as the thorax, parallel, finely and densely 

 punctured. Legs bright orange colored, coxae, trochanters, kneps, apex of the 

 tibiae and tarsi blackish blue; outer spur of posterior tibiae subrhomboidal, con- 

 cave. 



22. L. filiform is, elongata, purpurascens, cinereo parce piloso, thorace 

 lateribus parallelis parce punctulato, basi medio reflexo, elytris subtiliter scabris, 

 pedibus flavis, genubus tarsisque fuscis, antennis nigris extus incrassatis, 

 Long. -.'^S. 



Cantharis fil'iformis Le Conte, Journ. Ac. Nat. Sc, New Ser., 1, 91. 



One specimen; Texas. Mr. Lindheimer, and given me by Dr. Engelman. 

 Body slender, purplish, brassy, moderately pilose, with gray hair. Head not 

 dilated behind the eyes, truncate at base, sparsely and coarsely punctured : mouth 

 black, labrum deeply emarginate. Antennae longer than the head and thorax, 

 thickened externally, outer joints subglobular, last joint not constricted. Thorax 

 subquadrate, sides parallel, rounded in front, obsoletely punctulate : base re- 

 flexed in the middle ; elytra a little wider than the thorax, parallel, finely sca- 

 brous. Feet rufo-testaceous, knees and tarsi darker; coxae and trochanters 

 black; outer spur of the posterior tibiae broad and concave. 



23. L. Eenea, minus elongata, obscure aenea, capite parce punctato thorace- 

 que cinereo-pilosis, hoc subquadrato, lateribus parce punctato, basi vix reflexo, 

 elytris scabris, pedibus rufo-testaceis, antennis extus incrassatis. Long. -57. 



Say, Journ. Ac. Nat. Sc. 3, 301. 



Cantharis nigricornis Lee, Journ. Ac. Nat. Sc, New Ser., 1, 90. 



Pennsylvania and Missouri. The head is obsoletely emarginate at the base; 

 the outer joints of the antennae are subglobular, the last joint not constricted. 

 C nigriconiis Lee. is a variety with more punctures on the side of the thorax. 



B 6. 



24. L. m y 1 a b r i n a, supra flava glaberrima, capite convexo, parce punctato 

 postice valde rotundato, labro palpis antennisque nigris, thorace elongato, apice 

 angustato, nis.ro 4-guttato, elytris subtiliter punctulatis, maculis duabus utrinque 

 pone basin, altera ad medium apiceque nigris ; pedibus flavis, genubus tibiarura 

 apice tarsisque nigris. Long. '58. 



Pyrota mylahrina Chevrolat, Ins. de Mexique, No. 3 (Nov. 1834.) 

 Mexican Boundary ; collected by Mr. Clark. This species is extremely simi- 

 lar to the next, but differs in the Ibrm of the head, which is here much rounded 

 behind, and not at all quadrate : the neck is marked with a black spot each side. 

 The body beneath is variegated with black and yellow, the margin of the abdo- 

 minal segments being always yellow. The outer spur of the posterior tibiag is 

 cylindrical and obliquely truncate. 



25. L. Engelmanni, supra flava, glabra, capite convexo, parce punctato, 

 nigro maculato postice latius rotundato, labro palpis antennisque nigris, thorace 

 elongato nigro 4-guttato, apice angustata utrinque nigromaculata, elytris confer- 

 tissime punctulatis, maculis duabus pone basin, altera magna ad medium, apice- 

 que nigris, pedibus nisris, femoribus basi testaceis. Lon^. ?. 



Pyrota Engelmanni Le Conte, Journ. Ac. Nat.Sc, New Ser., 1, 91. 



