442 [December, 



black. The tibiae are black, pubescent with yellow hair. The very deep and 

 angular confluent rugosities of the elytra and their shining golden green color 

 will readily distinguish this species. 



Mannophorus. 



Mesosternum simplex, baud protuberans; mandibul^ subacutae ; palpi breves, 

 subaequales, articulo ultimo subcylindrico longiore ; thorax rotundatus, non ar- 

 matus ad apicem transversim constrictus et margine prominulo munitus, basi 

 marginatus; elytra costa eburnea ornata, mutica ; pedes tenues, femora mutica 

 non clavata, tarsi postici articulo Imo paulo elongato ; antennae 11-articulatae 

 tenues elongatae, maris articulo ultimo fere diviso. 



This genus belongs to the Elaphidion group, but is sufficiently distinct from 

 all the others of that group found in our territory. It will probably fall eventu- 

 ally into some of those invented by Mr. Serville, but from the very artificial 

 nature of the arrangement made by him, it is impossible to determine where it 

 may be found. 



It diifers from Elaphidion by the less dilated palpi, as well as by the 11th 

 joint of the antennae of the male being somewhat divided as in Eburia and Pur- 

 puricenus, approaching most nearly to the latter, but differing from both by the 

 more cylindrical palpi and by the very curious acute collar which surrounds the 

 apex of the thorax, and which projects very conspicuously at the sides. In the 

 form of body it resembles closely Crossidius testaceus Lee, and I was at first 

 inclined to lefer it to that genus. The mandibles, however, are not at all bifid^ 

 and the body, though slightly pubescent, is much less hairy than in Crossidius. 



M. 1 ae t u s , niger, subtus parce pubescens, capite thoraceque confertim grosse 

 punctatis, hoc rotundato, transverso, laete coccineo, basi apiceque nigro-marginato, 

 disco utrinque paulo elevato, elytris dense punctatis, vittis utrinque duabus an- 

 gustis flavis, (quarum interior laevigata et elevata,) postice abbreviatis, apice 

 subtruncata. Long. '5 .6. 



Several specimens. The antenna of the male are longer, those of the female 

 shorter than the body. The thorax has a faint rudiment of a dorsal line near 

 the base. The inner vitta of the elytra is one fourth from the suture, the outer 

 one is near the margin ; they are both abbreviated about one seventh from the 

 tip. Varieties occur with the vittae shorter, and with a black dorsal spot on 

 the thorax near the base. 



Elaphidion Serv. 



1. E. moestum, modice robustum, piceum, subnitidum tenuiter cinereo- 

 pubescens, thorace latitudine vix breviore, confertim punctato, lateribus paulo 

 rotundatis, elytris grossius modice punctatis, punctis postice minoribus, apice 

 truncatis, antennis femoribusque muticis. Long. -45 '5Q. 



Specimens procured by the expedition at Eagle Pass, and by Dr. Bcrlandiere 

 in Northern Mexico. Related to E. pubescens, but the punctures of the elytra 

 are larger, the color is darker, and the pubescence shorter and more sparse. 

 The thorax of the female is coarsely, that of the male finely punctured. 



2. E. s p u r c u m , modice elongatum, piceum, parce cinereo-pubescens, pilis- 

 que sordide albis irregulariter maculatum, thorace latitudine vix longiore confer- 

 tim punctato, lateribus rotundatis, elytris sat grosse modice punctatis, punctis 

 postice subtilioribus, apice truncatis, femoribus muticis, antennis articulis 3 et 

 4 apice spina brevissima armatis. Long. "45. 



One specimen. In form and size is very similar to E. neglectum, but the 

 thorax has no callosities, and the elytra are slightly truncate and entirely un- 

 armed at the apex. The affinities of this species seem to be with E. rauticum 

 Newm., but it is much smaller. 



3. E. deb i 1 e , elongatum, parce cinereo-pubescens, pilisque sordidis irregu- 

 lariter conspersum, thorace dense punctato, latitudine paulo longiore, lateribus 

 late rotundatis, linea dorsali fere Integra laevi, elytris sat grosse modice puncta- 



