AND EASTERN NEW MEXICO. 21 



ACMAEOPS Lec. 



A. dorsalis, elongata, nigra opaea, supra parce breviter cinereo-pubescens, capite thoraceque con- 

 fertissimc punctatis, hoc latitudine subbreviore, convexo antice posticeque constricto, lateribus valde 

 rotundatis, subcanaliculato, linea dorsali tenui lajvi, elytris thorace latioribus suparallelis, puucta- 

 tis, vitta subsuturali lutea postice sensim attenuata, et pone medium abbreviata, apice rotundatis, 

 subtus cinereo-pubescens, epimeris dense pubescentibus. Long. -45. 



One specimen, from Republican Fork of Kansas river, kindly given me by Dr. 

 T. B. Wilson. The antenna; are slender and reach two-thirds the length of the 

 elytra; behind the middle of the elytra and extending nearly to the apex is a very 

 obsolete yellowish stripe, which in other specimens may be found to be well de- 

 veloped, in which case there would be on each elytron a subsutural vitta abbrevi- 

 ated behind, and an external one abbreviated in front. 



Resembles in appearance some of the varieties of A. marginal is Lec. {? Leptura 

 Jonrjicorms Kirby), but the thorax is more robust and more rounded on the sides, 

 the legs arc entirely black, and the apex of the elytra more rounded. 



L,EPTURA Linn. 



li. cribripeiinis, atra breviter parce pilosa, capite dense, thorace grosse punctato, hoc convexo, 

 lateribus late rotundatis, iitrinque constricto, elytris rubris subglabris, cribratim punctatis, ad 

 apicem nigricantibus et intiis oljlique truncatis bidentatis, dente exteriore longiore ; articulis 

 antennarum 4, 5, 6, 9 et lOmo basi pallidis, 6to et 8vo pallidis macula apicali parva nigra notatis. 

 Long. -T. 



One specimen found by me on Platte river. Very nearly allied to L. cinnam- 

 opiera Kirby, but the elytra are much more coarsely punctured, and the lower half 

 of the fourth joint of the antennae is pale, while in the latter species there is merely 

 a small pale spot at base. 



MOi^IL-EMA Sat. 



M. appresftilllll, nigrum, thorace lateribus non spinosis, antice posticeque parce punctatis, elytris 

 ante medium parce punctatis, dorso antice plauis, lateribus subito valde declivibus. Long. -OT. 

 Tab. II, fig. lY. 



Lec. Journ. Acad. Nat. Sc. 2d ser. II, 1C8. 



New Mexico : one specimen : Dr. Wislizenus. Differs from the other species 

 known to me by the flattened back and suddenly deflexed sides of the elytra. 



STEWOSTOEA Muls. 



S. !>iatlirililin, plumbeo-nigra, undique cinereo-pubescens, thorace latitudine baud longiore, punc- 

 tato, lateribus subrotuudato, pilis subtilibus erectis brevibus parce vestito, versus basin densius 

 pubescente, elytris punctis remotis postice subtilioribus, ad apicem singulatim rotundatis. Long. -5. 



One specimen from Kansas, kindly communicated to me by Mr. Burke. From 

 its color it resembles at first sight Saperda moesta and concolor, but the short con- 

 vex front and dentate ungues will at once remind the student of the generic diflor- 

 ences. Of the usual smooth thoracic spots seen in the species of this genus, only 

 two very faint ones remain; they are situated about the middle, equidistant from 

 each other and from the side. 



