178 RHYNCHOPHORA. 
1. Prionosceles atratus, sp.n. (Tab. VII. fig. 3.) 
Oblongo-ovalis, nitidus, ater, antennis tursisque rufescentibus ; prothorace latitudine sublongiore, dorso 
subdeplanato, sat fortiter punctato, linea media sublevi; elytris ad apicem obtuse rotundatis, superne 
punctato-striatis, stria suturali fortiter impressa, interstitiis irregulariter punctatis, post medium tuberculis 
piliferis ornatis. 
Long. ¢, 3°3 millim.; 9, 2°6-3°4 millim. 
Mas. Fronte supra os impressa, pilosa ; prothoracis antica parte confertius subrugose punctata. 
Fem. Fronte parum convexa, nonnunquam supra os irregulariter subnodosa, subglabra; prothoracis antica 
parte subtilissime asperata, 
Oblong-oval, shining, subglabrous, deep black. Head (¢) with a shallow oval closely punctured and pilose 
fovea over the mouth, vertex convex, shining, with rather close strong punctures; head ( 9 ) little convex 
in front, with an indistinctly elevated median line, strongly punctured and subglabrous, sometimes tumid 
and subnodose over the mouth: epistoma with a conspicuous median tuft of light hairs; antenne 
ferruginous, club infuscate, pubescent, with indistinct sutures. Prothorax as long as wide, the base 
strongly bisinuate and margined, the margin continued along the subrectangular hind angles to the 
sides, which are subparallel to before the middle, then obliquely narrowed and slightly incurved to the 
obtusely rounded apical margin ; disc gently convex from side to side, somewhat flatter in the middle, 
obliquely declivous in front, entirely glabrous, shining, with moderate regular punctuation, the median 
line impunctate, variable, sometimes subelevated in the middle, apical third (¢) more closely furnished 
with slightly muricate punctures, ( @ ) finely asperate with small elevated granules. Scutellum rather 
large, transverse, shining. LElytra one-half longer than the prothorax, their basal borders sinuate, with 
a narrow raised margin, the humeral angles margined, the sides nearly straight, subampliated behind, 
then broadly rounded at the apex; surface moderately convex from base to middle, thence declivous and 
more strongly convex, flattened along the suture, punctate-striate, with the sutural stria deeply impressed, 
the punctures confluent ; interstices nearly flat, finely and irregularly punctured behind the middle with 
a single series each of minute tubercles bearing short semierect hairs. Underside black, pubescent ; 
legs piceous, the tibize and tarsi partly rufescent. 
Hab. Guatemata, Cerro Zunil, Senahu in Vera Paz (Champion); Panama, Volcan de 
Chiriqui (Champion). 
Seven examples. The single specimen taken in Panama is a good deal smaller than 
the others, with the elytral stria more deeply impressed towards the sides. It does 
not differ in other respects. 
2. Prionosceles maurus, sp. n. 
Ovalis, convexus, sat nitidus, niger, antennis et pedibus piceo-ferrugineis: P. atrato similis, sed compluries 
minor, pro portione latior; prothorace transverso, elytris multo subtilius striatis vel lineato-punctatis, 
stria suturali haud profundius impressa distinguendus, 
Long. 1:7-2 millim. 
Closely like P. atratus, but very much smaller, more broadly ovate, and convex. Head (2) more finely 
punctured in front, not elevated over the mouth. Prothorax transverse, the sides incurved almost from 
the base to the apex ; disc with distinctly closer punctuation, and therefore less shining, with a narrow 
subelevated median line. Elytra with the rows of punctures not or scarcely impressed, the sutural row 
not deeper ; interstices quite flat, confusedly punctured, with a single series each of more conspicuous 
pale hairs beginning almost at the base. Legs more reddish, the tibial armature weaker. 
Hab. GuateMALA, Cerro Zunil, Pantaleon (Champion). 
Three examples, apparently all females. This species can hardly be regarded at 
present as a mere variety of P. atratus, for although that insect differs somewhat in 
