442 [ DeceMBER, 
black. The tibie 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. 
MaANNOPHORUS. 
Mesosternum simplex, haud protuberans; mandibule subacute ; palpi breves, 
subzquales, 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 1mo paulo elongato; antenne 11-articulate 
tenues elongate, 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 differs from Elaphidion by the less dilated palpi, as well as by the 11th 
joint of the antenne 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 Lec., and I was at first 
inclined to 1efer 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. letus, niger, subtus parce pubescens, capite thoraceque confertim grosse 
punctatis, hoc rotundato, transverso, late 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 antenne 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 vitte 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—-56. : 
Specimens procured by the expedition at Eagle Pass, and by Dr. Berlandiere 
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 purcum, modice elongatum, piceum, parcg 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. muticum 
Newm., but it is much smaller. 
3. E. debile, elongatum, parce cinereo-pubescens, pilisque sordidis irregu- 
lariter conspersum, thorace dense punctato, latitudine paulo longiore, lateribus 
late rotundatis, linea dorsali fere integra levi, elytris sat grosse modice puncta- 
