240 RHYNCHOPHORA. 
7. Pityophthorus diglyphus, sp. n. 
Subelongatus, subnitidus, parce breviter pilosus, piceus, ore, disco prothoracis medio et elytris rufescentibus ; 
prothorace haud longiore quam latiore, antice constricto, dorso medio tuberculo transverso elevato, 
posterius preter lineam mediam levem sat conferte, lateribus obsolete punctato; elytris apice conjunctim 
rotundatis, lineato-punctatis, interstitiis alternis sparsim punctatis, declivitate preter suturam anguste 
sulcata. 
Long. 2°1-2°6 millim. 
tather elongate, moderately shining, with very scanty pubescence. Head (? 3) piceous-black, front rather 
flat, closely punctured, with moderately dense and short pubescence, carinate over the mouth, which is 
rufescent and fringed with longer yellowish hairs; front (? 9) not carinate or impressed, with cluse 
fine punctuation, absent over the middle, with dense, short, erect pubescence and a marginal fringe of 
long slightly curled hairs; antennz fusco-testaceous or inclined to piceous. Prothorax not longer than 
broad, strongly constricted apically, widest about the base, the sides slightly rounded behind, sinuate in 
front, the apex more rounded; disc shortly pubescent, deep piceous, the apex and a median transverse 
elevated tubercle rufescent, anterior half with scattered asperities not reaching the apical margin, posterior 
half depressed on each side behind the tubercle, moderately closely punctate, with a median smooth line, 
the punctures weak towards the side margins. Scutellum rather large, rounded. Elytra little narrower 
at base than the prothorax, twice as long, parallel-sided, or subampliated about the middle, rounded, 
incurved behind, the hind margins strongly rounded but scarcely acuminate ; surface glabrous, with rows 
of rather strong punctures, the first impressed throughout, the remainder towards the apex only, the 2nd 
and succeeding alternate rows rather irregular, interstices nearly flat, the 2nd and succeeding alternate 
interstices with occasional punctures as deep as those of the principal rows; declivity convex, with a 
narrow sulcus on each side of the suture, formed by the widening of the sutural stria, its fundus shallow, 
impunctate, the margins little elevated, with minute setiferous tubercles. Underside fusco-piceous, the 
abdomen lighter; legs fuscous or piceous. 
Hab. GuatemaLa, Quiché Mts., Balheu in Vera Paz (Champion). 
Four specimens, all probably taken under the bark of pines. The single example 
from the Quiché Mountains is larger than any from Balheu; the apical sulci of its 
elytra are wider and flatter, their margins are somewhat less elevated, and the sete, 
though fine, are longer and more evident. 
8. Pityophthorus obtusipennis, sp. n. 
Subcylindricus, haud elongatus, nitidus, ferrugineus ; prothorace latitudine vix longiore, dorso anterius lineis 
tuberculorum concentricis aspero; elytris irregulariter striato-punctatis, preter suturam rugulosis, inter- 
stitiis apicem versus lineato-punctatis, declivitate bisulcata, sutura vix elevata, ambitu singulo in callum 
prominulum crebre subtiliter tuberculatum elevato, margine apicali transverso. 
Long. 2°1 millim. | 
Cylindrical, shining, ferruginous, with rather long, thin, fulvous pubescence. Front (in both examples) convex, 
not carinate, with rather strong close punctuation, pubescence thin, erect, mouth fringed; eyes emar- 
ginate ; antenne testaceous. Prothorax scarcely longer than broad, widest about the middle, constricted 
in front, the sides behind slightly, the apex broadly rounded and crenulate, hind angles obtuse, the basal 
margin curved; surface subimpressed on each side behind a slight median transverse elevation, the apical 
half asperate in well-marked concentric lines, the anterior pair rather remote from each other, the 
basal half somewhat finely punctate, the median line smooth, non-elevated. Scutellum rather small, 
triangular, lytraas wide at the base as the prothorax and one-half longer, the shoulders subrectangular, 
the sides subparallel and scarcely converging behind, the apical margin transverse when seen from above ; 
surface with strong punctures in scarcely impressed rows, rather irregular near the suture, interstices 
shining, rugulose internally, with remote and scarcely weaker piliferous punctures on the apical part of 
the alternate interstices; apex strongly declivous, sulcate on each side of the suture, the sulcus with 
