84 [May, 



others. The under surface is of a uniform black bronze color, and densely 

 punctured. 



Eusattus puberulus, infiatus niger, subopacus, parce breviter flavo-pubes- 

 cens, elytris parcius punctatis, lineisque elevatis duabus obsoletis notatis ; tho- 

 racis angulis posticis acutis modice productis, tibiis anticis extus usque ad 

 medium serrulatis, apice valde productis. Long. '34. 



Laredo to Ringgold Barracks, Mr. Weise. The sides of the thorax are strongly 

 margined, and furnished with long hairs : the base and apex are ciliate as usual 

 with short bristles: the disc is entirely without punctures: the slightly elevated 

 lines of the elytra in one specimen can hardly be observed. 



Asbolus ? infaustus, parum convexus, niger, subnitidus, capite parce 

 punctato, thorace latitudine sesqui breviore, lateribus rotundatis, postice brevi- 

 ter sinuatis, angulis anticis acutis, posticis rectis, basi truncata, parce in disco 

 obsolete punctato, elytris ovalibus thorace paulo latioribus, postice valde decli- 

 vibus, disco punctis, lateribus apiceque tuberculis subelevatis subseriatis notatis. 

 Long. -83. 



One specimen, Laredo to Ringgold Barracks, Mr. Weise. This species agrees 

 in its characters very closely with the two California species described in the 

 Annals of the Lyceum of New York, (5, 129) the mentum is however more flat- 

 tened, slightly carinate at base, and impressed anteriorly ; the antennas are less 

 slender, and the joints are more distant, and the last joint is not truncate, but 

 oval and pointed, and but little smaller than the tenth joint. A close affinity to 

 Centrioptera is also seen, but that genus has less produced prosternum, and" the 

 mentum is not emarginate. 



Allecula soc ia, picea fusco-pubescens, thorace latitudine duplo breviore, 

 parce punctato, antrorsum angustato, lateribus rotundato, angulis posticis fere 

 rectis, elytris profunde striato-punctatis, interstitiis subconvexis, punctatis. 

 Long. *45. 



Laredo to Ringgold Barracks, Mr. Schott. Closely related to A. punctulata 

 Mels., but w T ith a broader thorax: as in that species the eyes are large and 

 moderately distant, the third joint of the antennae equal to the fourth, and the 

 penultimate joint of all the tarsi lobed. 



Meloe s u b 1 a e v i s, cyaneo-niger, fere opacus, capite thoraceque parce sub- 

 tiliter punctulatis, hoc quadrato, postice subangustato, angulis omnibus rotunda- 

 tis, disco subdepresso, foveis duabus ante medium impresso, elytris subtiliter 

 daedaleo-rugosis, antennis sensim paulo incrassatis. Long. -65. 



Fort Union, New Mexico, Major Sibley. Probably a female : the antennae are 

 not filiform as in M. angusticollis Say, nor thicker in the middle as in M. im- 

 pressus Klrly, but are very gradually thickened to the end : the third joint is 

 not longer than the fourth, and is about twice the size of the second. The inner 

 spur of the posterior tibiae is acute, the outer one is larger, concave and obtuse. 

 This species approaches the Western American M. strigulosus Mann., but the 

 thorax is not so much elongated, the sides are nearly straight, and the base less 

 emarginate. 



Lytta cos tat a, valde elongata, nigra, dense cinereo-pubescens, capite linea 

 nigra impressa, thorace latitudine sesqui longiore, antrorsum angustato, lateribus 

 late rotundato, linea nigra dorsali impressa, elytris sutura margine, costisque 4 

 elevatis ornatis, externa antice paulo abbreviatis, tarsis antennisque nigris. 

 Long. "65. 



One specimen, Frontera, (Rio Grande) Mr. Clark. The antennae are slender 

 and filiform : the first joint is equal in length to the third ; the second is about one 

 half as long; from the third the joints diminish gradually in length : the inner 

 spur of the posterior tibiae is acute, the outer one is broader, obtuse and con- 

 cave. The labrum is slightly emarginate. It belongs in division (B g.) of 

 Proc. Acad. 6, 331. 



Lytta luteicornis, nigra dense cinereo-pubescens, thorace latitudine 

 longiore lateribus antice rotundatis, disco lineolis duabus nigris saepius ornato, 



