bs 
74 RHYNCHOPHORA. 
shining, with rather fine but distinct punctuation, absent over the median line and two lateral spots 
closer along the basal margin, which is impressed on each side. Scutellum small, rounded. Elytra as 
wide as the prothorax and less than one-fourth longer, transverse at base, the shoulders oblique, not callose, 
the sides subparallel, scarcely narrowed behind, the apical margins rounded as far as the middle of each 
elytron, then excised in a broad emargination; surface cylindrico-convex, flattened along the suture, 
which is impressed before the declivity, finely lineato-punctate, the interspaces covered with transverse 
wrinkles ; declivity oblique, beginning behind the middle, broadly concave from side to side, shining 
and punctured, the side-margins elevated, ciliate with a few bristles, and furnished on each side with 
three teeth—the first a very small pointed tubercle close to the flexure of the suture, succeeded closely 
by an acute and rather long spine, the third remote from the second, backwardly directed, flattened, 
and truncate. Underside black; legs and cox pitchy-red, the femora darker ; anterior tibiz strongly 
serrate. 
Hab. Guatumata, San Gerénimo (Champion). 
Three examples, all of the same sex. This species is separable from P. melanura 
and P. preruptum by its shorter and relatively stouter build, and by the presence of 
two strong teeth on each side-margin of the elytral excavation, together with a small 
pointed tubercle above them. 
5. Pterocyclon hoegei, sp. n. 
Mas. Oblongus, cylindricus, sat nitidus, nigro-piceus, elytris dilutioribus, antennis et pedibus testaceis ; 
prothorace anterius a medio usque. ad apicem rotundato; elytris punctatis, haud rugulosis, declivitate 
obliqua, anterius producta, subexcavata, marginibus vix acute elevatis in singulo elytro bituberculatis. 
Long. 3°1 millim. 
Male. Oblong, cylindrical, rather shining, deep piceous, with the elytra lighter. Head concealed in the type ; 
antennee testaceous, the club rather long, obovate, with curved sutures. Prothorax oblong, strongly 
rounded from the middle to the apex, rather obliquely towards the sides, the latter parallel from the 
middle to the subrectangular hind angles, base subtruncate, finely margined towards the middle; disc 
convex, declivous, asperate before the middle, which is subelevated, with no distinct transverse line, its 
hinder half with very fine subasperate rugs, closed along the base, sparser and more punctiform towards 
the narrow median impunctate line. Scutellum small, triangular, shining, black. Elytra as wide as the 
prothorax, and only one-fourth longer, subtruncate at base, the shoulders obtuse, the sides feebly curved 
throughout, little narrowed posteriorly, apex subtruncate (from above), the median emargination narrow 
and shallow; surface cylindrico-convex, shining, finely punctured, and transversely rugulose; declivity 
beginning gradually as an impression behind the middle of the suture, forming a shallow oblique cordate 
excavation behind, shining and punctured, the side-margins defined but scarcely acute and not thickened, 
each with two small acute teeth above and below the middle. Underside piceous, Legs reddish-testaceous, 
the anterior tibiee with about six blunt spines on the upper margin. 
Hab. Mexico, Jalapa (Hoge). 
One specimen. ‘This insect may be distinguished from the following species, 
P. umbrinum, by the prothorax being more strongly rounded in front as far back as 
the middle, by the fine subasperate rugee of the hinder part of its surface, the shorter 
and more glossy elytra, with scantier punctures and ruge, and the wider and more 
distinctly excavate declivity, the margins of which tend to become acute instead of 
forming the rounded callosities seen in P. wmbrinwm and its neighbours. ‘The serration 
of the anterior tibize is also different from that seen in P. wmbrinum, which has the 
