280 RHYNCHOPHORA. 
One example. Allied to P. mali; slightly more robust, with less distinct elytral 
punctuation and flatter declivity, the tubercles thereon minute and not situate on any 
elevation of the surface. 
15. Pterocyclon terminatum, sp. n. (Tab. VIII. fig. 17, ¢, apex of elytra.) 
Mas. Elongatus, cylindricus, sat nitidus, nigro-piceus, prothoracis basi et elytris (apice excepto) sordide 
flavo-testaceis ; elytris distincte lineato-punctatis, ad apicem oblique retusis, ambitu marginato, supra 
prope suturam utrinque bidentato, dente secundo majore, retusione pallide pilosa, utrinque callose 
elevata, callo utroque supra tuberculato, infra incurvato. 
Long. 3 millim. 
Male. Elongate, cylindric, somewhat shining. Head fuscous (retracted in the type); antenne brown- 
testaceous, sutures of the club oval. Prothorax oblong, its apical margin somewhat obtusely rounded 
and subcrenate, the sides parallel from before the middle to the base, which is truncate, with a transverse 
impressed line along its margin; surface with no discal elevation, glabrous, dull yellow-testaceous, the 
anterior third blackish, terminating behind in a well-defined curve, convex and finely asperate, the 
remainder closely reticulate, finely and sparsely punctate except over a median longitndinal subinfuscate 
line. Scutellum rounded-triangular, blackish. Elytra nearly one-half longer than the prothorax, scarcely 
so wide, truncate at base, with rounded-rectangular humeral angles, parallel-sided, not narrowed behind, 
the apical margins nearly transverse when seen from above; surface cylindrical, somewhat flattened 
along the suture, obliquely declivous and retuse at apex, dull testaceous-yellow, darker along the suture, 
the sides and apical third pitchy-black, distinctly lineato-punctate, the sutural row a little stronger : 
declivity beginning at the posterior fourth, subcircular, with well-defined margins, commencing above 
with two teeth near the suture, the upper tooth small, the lower larger, pointed, apical emargination 
shallow and inconspicuous ; its surface pilose with rather long hairs, impressed slightly along the upper part 
of the suture and elevated on each side into a eallosity, stronger and furnished with a small tubercle at 
its upper part, becoming inconspicuous below and incurved towards its fellow. Underside piceous ; legs 
brown-testaceous. 
Ifab, Guatemata, Capetillo (Champion). 
One specimen. An insect somewhat similar in general appearance to P. cordatum, 
but larger, with the elytra distinctly punctate and the declivity differently formed. 
16. Pterocyclon egenum, sp. n. 
Cylindricum, subnitidum, sordide pallide testaceum, prothoracis antica parte et elytrorum apice nigricantibus ; 
antennarum clava latius ovata, subacuminata; elytris ad apicem subtruncatis, declivitate fere verticali, 
circulari, superne prope suturam utrinque tumida et subtuberculata. 
Long. 1°8 millim. 
Oblong, cylindrical, scarcely shining. Head fusco-piceous, the front subconvex, dull and glabrous ; antennze 
testaceous, the club rather broad, oblique oval, the lower margin convex to the middle, then slightly 
excised, the apex hence subacuminate, the sutures curved, oblique. Prothorax more than one-third 
longer than broad, strongly rounded at the apex, parallel-sided from before the middle to the subsinuate 
_ base, hind angles subrectangular; surface fuscous-black anteriorly, the black area ill-defined behind and 
extending back to a variable distance behind the middle, posteriorly pale dirty testaceous, its anterior 
third declivous, finely asperate, behind rather dull, imperceptibly punctured, a little more shining along 
_ the median line and with a feeble trace of a transverse elevation before the middle. Scutellum somewhat 
_ acute, triangular, black. Elytra as wide as the prothorax and scarcely longer, feebly rounded at base, the 
shoulders rounded, the sides nearly parallel, not narrowed behind, the apex truncate when seen from 
above; surface cylindrical, dirty testaceous with the declivity blackish, slightly shining and feebly 
punctured ; declivity subvertical, broader than long, the side-margins defined but not acute, the: apical 
