66 
PROCEEDINGS OF THE ACADEMY OF 
the base, but even a little narrowed anteriorly. It more nearly resembles Eu- 
strigata, but differs by the more strongly punctured head and thorax. 
Eu. puncticollis, oblonga ferruginea, nitida, clypeo subemarginato, 
antice rugoso, thorace latitudine breviore, confertim punctato, lateribus pa- 
rallelis subrectis, angulis omnibus rotundatis, elytris humeris par vis acutis, 
striis impunctatis, insterstitiis vix convexis, biseriatim subtiliter punctulatis. 
Long. -4. 
A very distinct species of which but a single specimen was found by Dr. 
Webb at El Paso. 
PsiLOPTERA Sol. (emend. Lac.) 
P. W e b b i i, crassa chalybea, capite thoraceque punctis viridi-aeneis varie- 
gatis, hoc insequaliter punctato, ad basin medio late foveato, latitudine fere 
duplo breviore, antrorsum angustato lateribus ad medium obtuse angulatis, 
dein vix subsinuatis, angulis posticis rectis ; elytris striis punctatis, inter- 
stitiis spatiis impressis quadratis granulatis pubescentibus viridiaureis ornatis, 
ad apicem oblique paulo truncatis ; subtus dense grosse viridipunctato ; pros- 
terno bisulcato. Long. 1*06 — 1*25. 
Found at Ures, Sonora, by Dr. Webb. Allied to Dicera Woodliousei Zee, 
but it is larger and stouter, and differs not only by the thorax not being dilated 
in front of the base, but by the ground color being bluish black, not bronzed, as 
well as by the elytra being distinctly and obliquely truncate at tip. The im- 
pressed green metallic spots of the elytra vary in number ; in one specimen 
they are few, forming irregular narrow fasciae, while in another they are con- 
fluent, and cover more than half the surface. 
P. valens, crassa, chalybea, capite thoraceque punctis viridi-aeneis varie- 
gatis, hoc insequaliter punctato, ad basin medio late foveato, latitudine fere 
triplo breviore, ante basin latiore, lateribus antice valde rotundatis, postice 
sinuatis angulis posticis rectis ; elytris striis punctatis, interstitiis spatiis plu- 
rimis quadratis granulatis pubescentibus viridi-seneis impressis, ad apicem 
oblique subtruncatis, sutura prominula ; subtus dense grosse viridipunctato, 
prosterno bisulcato. Long. "9 — 1"15. 
Eagle Pass, Texas; Mr. Schott. Also resembles P. Woodhousei, but 
differs by the thorax being shorter, more dilated and more rounded on the 
sides ; the ground color, as in P. W e b b i i is bluish black. 
Chalcophora Sol. (emend. Lac.) 
C. planicosta, senea virescens, subtiliter dense punctulata, thorace trauF- 
verso, antrorsum angustato transversim constricto et lateribus rotundato, an- 
gulis posticis acutis divaricatis, ad basin late trisinuato, dorso plaga elongata 
antice abbreviata, callisque versus latera pluribus chalybeis nitidis ; elytris 
sutura, lineis tribus integris, cum scutellari humeralique brevibus, param 
elevatis chalybeis nitidis, costa singula bistriatim punctata, ad apicem sub- 
serratis et subbidentatis. Long. 1-05 — 1-13. 
San Diego trip, Dr. Webb. The head is finely pubescent ; the anterior 
margin of the thorax is densely ciliate with yellowish white hair. The under 
surface is finely very densely punctured, finely pubescent, with the middle of 
the sterna and the middle posterior margin of the abdominal segments shin- 
ing and coarsely punctured. The sterna are each impressed with a short deex 
medial furrow : the mesosternum is widely divided. 
C. obliterata, senea cuprascens, subtiliter dense rugose-punctulata, capite 
lineis nitidis reticulato, thorace transverso, antrorsum angustato, transversim 
constricto et lateribus rotundato, angulis posticis acutis divaricatis, ad basin 
■late bisinuato, costa dorsali antice abbreviata, callisque pluribus Isevibus niti- 
dis chalybeis, margine basali praecipue ad medium elevato ; elytris sutura 
"laevigata parce punctata, costis tribus integris humeralique brevi fere obliteratis, 
[March. 
