156 DESCRIPTIONS OP NEW SPECIES. 



coarsely punctured, the latter more narrowed behind, with the 

 basal margin not depressed; the rugosities of the elytra are more 

 coarse, and those of the dorsal segments more punctiform. The 

 joints 8-10 of the antennae increase slightly in length, but the 

 difference is not very obvious. 



NOMASPIS Lec. 

 Meloe parvulus Hald. differs from Meloe by the elytra not being 

 in any way imbricate ; the scutellum is distinct, triangular, 

 rounded behind, and projects between the elytra, which are con- 

 nate for about one-third of their length, and then gradually 

 diverge, as in Meloe. In Henous the elytra are connate almost 

 to the tips. This genus is, therefore, intermediate between the 

 two just named, but more nearly allied to the latter. 



455. N. parvulus. Ater subopacus, capite thoraceque fortiter punc- 

 tatis, hoc transverso, capite paulo angustiore, postice vix angustato, 

 basi fere truncate-, angulis anticis value rotundatis, disco canaliculato, 

 ante scutellum vage impresso ; elytris confertirn scabris, ad quadrantem 

 connatis, dein divergentibus apice singulatim rotundatis ; abdomine 

 supra dense subtilius rugose punctato ; antennis capite thoraceque 

 longioribus, articulo 2ndo 4toque aequalibus, 3io longiore. Long. -40 — '58. 



Meloe parvus\\ Hald. Stansbury's Expedition to Great Salt Lake, 377 ; 



Lec. Proc. Acad. Nat. Sc. Phila. VI, 329. 

 Meloe parvulus Hald. Proc. Acad. Nat. Sc. Phila. VI, 404. 



Kansas, Colorado, and New Mexico. The antennae are nearly 

 filiform, but not very slender, the joints 4-10 beiug equal, and the 

 11th a little longer. The base of the thorax is finely margined, 

 and scarcely emarginate, the disk near the hind angles is convex, 

 and the angles themselves nearly rectangular, though not promi- 

 nent; the dorsal channel is distinct, and wider towards the base, 

 and marked with a distinct impressed median line. 



JMACROBASIS Lec. 



456. M. virgulata. Nigra dense cinereo-pubescens, scutello, ely- 

 trorum sutura margine vittaque dorsali angusta pallide pubescentibus ; 

 antennis nigris, pedibus ferrugineis, artubus fuscis. Long. *34 — *42. 



Mas antennarum articulo lmo sequentibus 4 baud breviore, ultra medium 

 antice sinuata, 2ndo minuto, 3io sesqui longiore, 4to prsecedentibus 

 duobus vix longiore. 



Femina antennarum articulo lmo sequentibus duobus vix longiore, ex- 

 trorsum sensim incrassato, 2ndo-4to sensim paulo longioribus. 



