236 
RHYNCHOPHORA. 
11. Elytra with a deep apical sulcus, its fundus punctured, the lateral calli 
prominent. . . . 2... ew we ee ee ee ee + obtusipennis, sp. n. 
Elytra each with a shallow impunctate apical sulcus, the lateral calli 
not prominent . . . . . 1. ee ee ee ee ee ttmidus, sp. 1. 
12. Apex of elytra tuberculate . . . 2... 1 2. ee ee ee) 6gteatemalensis, sp. n. 
Apex of elytra not tuberculate . 2. . 2. 1 ww ww eee dE 
13. Elytral punctures moderately deep. . . . . . . . . 6 « » «= confinis, sp. un. 
Elytral punctures extremely fine . 2. . 2. 2. 1. 1. 1. ew we ee 1A 
14. Form elongate; elytra with fine, erect, pale hairs at apex . . . . .  cincinnatus, sp. n. 
Form not elongate; elytra wholly glabrous. . . . . . . . . . obsoletus, sp. n. 
15. Species minute, not exceeding 1:7 millim. in length . . . . . . . 16. 
Species 2 millim. or upwards in length . . . . . . . . . .. «OY. 
16. Prothorax irregularly granulate in front, simply and finely punctured 
17. 
18. 
behind © 2. we eee ee ee ee. incompositus, sp. n. 
Prothorax with concentric lines of asperities in front, subasperately | 
punctured behind . . . . . 1 ee ee carinifrons, sp. n. 
Elytra wholly glabrous . . . . . ww. 1 ee ee ee ee poolitus, sp. n. 
Elytra setose at apex... ww we eee ee ee IB. 
Base of prothorax strongly punctured. . . . . . . . . . . . deyrollei, sp. n. 
Base of prothorax finely granulate. . . . . . . . 2. 4. « imcommodus, sp. n. 
1. Pityophthorus nigricans, sp. n. 
Subelongatus, nitidus, niger, antennis et pedibus fuscis, breviter pilosus; prothorace antice constricto, dorso 
utrinque post medium impresso, mediocriter punctato; elytris ad apicem acuminatis, striato-punctatis, 
declivitate obliqua, utrinque preter suturam sulcata, et in callum externum prominulum lateraliter elevata. 
Long. 2°5 millim. 
iM as. 
Fronte glabra, elytrorum sulco profundiore, callis fortius elevatis. 
Fem. Fronte pallide villosa. 
Rather elongate, shining black, antenne and legs fuscous. Front ( ¢ ) subconvex, punctured, shortly carinate 
over the mouth, its margin alone pilose; front (2) clothed with erect, curled, pale yellowish hairs ; 
antennal club broad, its sutures slightly curved, fringed with pale hairs. Prothorax about as broad as 
long, widest near the base, constricted towards the broadly rounded apex, the sides gently rounded 
behind, the hind angles obtuse, the base slightly curved; surface depressed on each side behind the ~ 
transverse median elevation, scarcely pubescent, anteriorly with irregular transverse lines of asperities, the 
basal half with moderately strong and close punctuation, absent over the median line and a lateral patch. 
Scutellum rounded-triangular. lytra three-fourths longer than the prothorax, with subrectangular 
shoulders, the sides nearly parallel to the hinder third, thence gradually rounded, the apical margins 
oblique, acuminate ; surface with regular scarcely impressed rows of moderate punctures, the sutural 
row substriate, interstices nearly flat, alternately wider and narrower, with occasional single punctures 
similar to those of the strie ; declivity pilose with scattered fine hairs, with a deep, impunctate, median 
sulcus, stronger in the male, the sutural margins scarcely raised, much lower than the lateral calli, which 
are more elevated, subangulate, and crested with fine tubercles in the male. Underside pitehy-black, 
pubescent: pygidium evident from below. 
Hab. Guatemaua, Quiché Mts. (Champion). 
Three examples. This insect is allied to the species described by Eichhoff as 
P. nitidulus (Mann.); it 1s, however, entirely black, with the elytra less finely punctured 
in regular rows, the interstices smoother, the declivity more obliquely sulcate, its 
