PITYOPHTHORUWS. 241 
indistinct rows of punctures, the sutural margins scarcely raised and feebly tuberculate, the sulci limited 
externally by a strongly elevated callus, its ridge crenate with small tubercles, pilose and nearly 
vertically declivous behind. Underside and legs testaceous. 
Hab. Guatemata, Balheu in Vera Paz (Champion). 
In colour and sculpture similar to P. pullus (Zimm.) (= cribripennis, Eichh.), but 
with the elytra relatively much shorter, more deeply sulcate at the apex, with stronger 
lateral elevations, and the hind margin transverse and not produced at the suture. 
The two examples taken show no sexual differences. 
9. Pityophthorus timidus, sp. n. 
Oblongus, subnitidus, fuscus ; prothorace antice concentrice asperato, postice fortiter punctato ; elytris postice 
rotundatim angustatis, apice obtuse rotundatis, lineato-punctatis, linea suturali impressa, declivitate 
seriato-setosa, utrinque subsulcata, sutura et callis lateralibus minute tuberculatis. 
Long. 1:4 millim. 
Oblong, moderately shining, fuscous. Forehead convex, dull, closely and strongly punctured towards the 
mouth, smooth above, with very short scanty pubescence and thin oral fringe. Prothorax longer than 
broad, widest before base, semielliptic and scarcely constricted in front, hind angles obtuse, the base 
acutely margined; surface with a slight antemedian transverse elevation, subglabrous, in front with four 
concentric rows of asperities, behind strongly punctured with a subelevated impunctate median line. 
Scutellum small, rounded. Elytra as wide as the prothorax: and three-fourths longer, subparallel-sided 
to the hinder third, thence gradually narrowed, the apical margin uniformly rounded; moderately strongly 
punctured in regular rows, the sutural row impressed, interstices narrow, flat, impunctate, posteriorly 
with rather long, pale, uniseriate sete; declivity obliquely convex, with a narrow juxta-sutural impression 
on each side, the feebly raised sutural margins and lateral callosities with a few minute tubercles. Under- 
side fusco-testaceous, the abdomen darker, legs testaceous ; pygidium just visible from below. 
Hab. Mexico, Cordova (Sal/é). 
But one example of this little species, one of the smallest of the genus, has reached 
us. Though it presents no very prominent characters, the insect cannot well be 
referred to any of the Pityophthori described by Kichhoff. Judging from the 
description, it comes nearest to P. concentralis, Kichh., from Cuba and Florida, but 
it differs in that the first row of punctures on the elytra is alone striate, and the 
apical impressions are neither wide nor deep. Unfortunately no authentic specimen 
of P. concentralis has been accessible. 
10. Pityophthorus confinis, sp. n. 
Elongatus, sat nitidus, breviter pubescens, piceus, prothoracis apice et elytris rufescentibus, vel badius, 
prothoracis disco infuscato; prothorace subelliptico subsequaliter convexo, antice confuse granulato, 
postice conferte punctato; clytris parallelis, apice rotundatis, lineato-punctatis, interstitiis levibus, 
declivitate convexa, obsolete punctata, sutura subelevata. 
Long. 1*8-2°1 millim. 
Elongate, cylindrical, piceous-black, with the apex of the prothorax and the elytra reddish, or testaceous-brown, 
with the head and disc of the prothorax more or less infuscate. Front thinly pubescent, either subconvex 
and shortly carinate over the mouth or flattened with the carina absent. Prothorax longer than broad, 
slightly or not at all constricted in front, the sides and apex rounded in an incomplete ellipse, hind angles 
obtuse; surface almost uniformly convex, with no median elevation, in front irregularly asperate with 
BIOL. CENTR.-AMER., Coleopt., Vol. IV. Pt. 6, June 1904. 2II 
