AND EASTERN NEW MEXICO. 27 



Fort Laramie. I have given the name Gtyptina to a group of Halticcc interme- 

 diate between genuine Haltica and Longitarsus. The head is marked with a deep 

 oblique line each side between the eyes, running forward to the frontal elevation : 

 the antennae are half as long as the body, slightly thickened externally; the 2d 

 and 3d joints equal in length : the thorax is quadrate, transverse, with the anterior 

 angles obliquely truncate, the disc moderately convex, without impressed lines. 

 The elytra oblong, wider than the thorax, with rows of punctures ; the hind tibia) 

 deeply sulcate above, with the edge of the groove very finely serrate, the terminal 

 spur small, the tarsi attached at the end of the tibiae, 1st joint equal to the others 

 combined, and nearly half as long as the tibiae. Besides the two species here 

 described, the Californian Haltica cerina Lee., Pacific R. R. Expl. and Surveys, 

 vol. xi, insects, 68, also belongs to this genus. 



O. lissotorques, testacea, nitida, fronte parum elevata, vertice utrinque oblique sulcato, thorace 

 transverse, basi rotundato, lateribus parallelis, angulis anticis oblique truncatis, nitido, Isevi, vix 

 obsolete parce punctulato, elytris oblongo-ovalibus, thorace latioribus, fortiter punctate -striatis ; 

 anteunis extrorsum vix infuscatis. Long. -08. 



One specimen with the preceding, which it entirely resembles, except in the 

 sculpture of the head and thorax. It is also found in Pennsylvania. 



CHJETOCNEUIA STEPHENS. 



C. SllJiviridi*, supra viridi-senea, obscura, subnitida, thorace latitudine fere duplo breviore, lateri- 

 bus obliquis late rotuudatis, fortius sat dense punctate, elytris fortiter striato-punctatis, interstitiis 

 subtiliter uniseriatim punctulatis, pedibus antennisque nigris, his basi testaceis, tibiis basi vix 

 picescentibus. Long. -12. 



Fort Laramie. Broader than C. denticulata, and differing therefrom in many 

 particulars. I have retained the older name for this genus, as I know no reason 

 for the substitution of Redtenbacher's Plectroscelis, which is adopted by many 

 naturalists of Germany and France. 



LVPERVS GEOFFROY. 



It. rufipes, elongatus, chalybeo-niger, thorace parce punctnlato, latitudine haud breviore, lateribus 

 late rotundatis subsinuatis, angulis posticis prominulis, elytris fere obsolete punctulatis, chalybeis, 

 antennis pedibusque rufo-testaceis, illis extrorsum fuscis. Long. '22. 



Santa Fe, Messrs. Kern and Fendler. Of the form and size of L. meraca (Qalle- 

 ruca meraca Say), but known by the uniform color of the feet, the less distinctly 

 punctulate elytra, and the less rounded sides of the thorax. 



MICRORHOPALA CHEVE. 



HI. Iretllla, elongata, postice modice dilatata, et obtuse rotundata, nigra, capite pone antennas, 

 thoraceque toto Isete rufo-flavis, hoc parce cribrato, transverse, lateribus obliquis rectis, elytris 

 punctis magnis striatis, seriebus per paria approximatis, internis postice subtilioribus, vittaqne 

 utrinque basali ante medium abbreviata flava. Long. -25. 



Fort Riley, Mr. Xantus. Closely related to M. vittata, but differs by the sides 

 of the thorax being entirely straight, as well as by the colors ; the thorax is very 

 narrowly margined with black, but is yellow both above and beneath, as is also the 



