AND EASTERN NEW MEXICO. 15 



Found near the Rocky mountains from Platte river to Santa Fe, and westward 

 as far as Tucson. Larger than E. convexus Lee., and less convex; the sides of the 

 thorax are not suddenly depressed behind the middle as in that species. 



EITIBAPHIOTV SAY. 



E. cont 11*11111, atrura opacum, thorace latitudinc fere duplo latiore, antice profunde emarginato, 

 lateribus valde rotundatis, disco parce punctate, parum convexo, margine late explanato modice 

 reflexo, angulis anticis subacutis, posticis latis obtusis valde rotundatis, ad basin medio recte trun 

 cate, elytris dorso planis, postice valde dcclivibus et acute angustatis, thorace vix latioribus, fortiter 

 reflexo-marginatis, seriatim subtilius sat dense muricato punctatis, ad apicem singulatim breviter 

 acuminatis ( 9 ), vel in canda brevi prolongatis ( ). Long. -55 65. Tab. I, fig. 8. 



LEC. Journ. Acad. Nat. Sc., Philad., 2d ser. IV, 40. 



Fort Laramie and Santa Fe. Though differing very much in form from the 

 Helaeus like E. muricatum Say, the forms of the antennae, oral organs and legs re 

 quire it to be associated with that species. The figure given saves the necessity of 

 a long description, while the diagnosis above will enable the species to be readily 

 recognized. 



Two specimens found by Dr. Webb, near the Mexican boundary, differ in having 

 the sides of the thorax much more strongly reflexed, so that that part becomes 

 much narrower than the elytra. This is, probably, merely a local variety, as simi 

 lar differences occur among individuals of Cyclirus elcvatus, and in many other 

 insects which have the margins of the body widely reflexed. 



BLAPSTINUS LATH. 



B. pratensi*, elongato-ovalis convexus, ater opacus, breviter subtiliter fusco-pubescens, capite 

 thoraceque punctatissimis, hoc latitudine scsqui breviore, lateribus late rotundatis, ad npicem emar 

 ginato, angulis anticis acutis ad basin sinuato, angulis posticis rectis, elytris striis fortius punc 

 tatis, interstitiis paulo convexis, punctulatis. Long. 20 23. 



Platte River Valley, abundant. Differs from the Californian B. piibcscens Lee., 

 by the finer pubescence, by the more widely rounded sides of the thorax, and by 

 the more prominent anterior angles. 



B. vcstitus, elongato-ovalis, convexus, aineo-niger, pube albida minus subtili dense vestitus, capite 

 thoraceque confcrtim punctatis, hoc latitudine vix breviore, antrorsum paulo angustato, lateribus 

 late rotundatis, ad apicem emarginato, angulis anticis acutis, ad basin sinuato, angulis posticis 

 rectis, elytris striis punctatis, interstitiis planis punctnlatis. Long. 20. 



Two specimens from Platte River Valley. Very closely allied to the preceding, 

 but the coarse pubescence, and the flattened intervals of the elytra seem to be suffi 

 cient characters for separating it. 



CENTROIVOPUS SOLIER. 



C. opacus, elongatus, niger opacus, capite postice punctate, fovea vertical! notato, antice concavo, 



cpistomate late rotundato et fortiter marginato, thorace quadrato, antice vix angustiore, lateribus 

 parum rotundatis, angulis posticis acutis, parum convexo, parce punctate, elytris striis e punctis 

 parvis constitutis. Long. - 57. 



One male; Black Hills, Dr. Hammond. Differs from the Mexican C. supprcssus, 

 according to description, by being opaque, with finer elytral striae The sexual 



