PSILOCENTRUS.—CENTRICULUS. 157 
1. Psilocentrus xautipa, sp.n. (Tab. IX. figg. 21, 21a, 3.) 
Fuscus, pronoto unicolori vel ferrugineo-variegato, colore variabili, capite inequali, metopidio supra caput 
plicato et impresso ; pronoto dense et distincte sed haud profunde punctato, sparsim pubescenti, processu 
postico nigro testaceo-vittato ; scutello subrugosius punctato, apice testaceo, maculé utrinque ad basin 
albido-tomentosa ; tegminibus hyalinis, basi nigra punctatd, deinde macula magna albida, maculisque una 
et altera ad margines nigris, venis partim nigris, partim hyalinis; pedibus cum colore corporis variantibus. 
Fuscous, with the pronotum often more or less broadly variegated with ferruginous, thickly and distinctly 
punctured, with the posterior process black, banded with testaceous ; scutellum fuscous, with the apex 
light, and with a distinct patch of whitish tomentose pubescence on each side at the base; tegmina 
hyaline, with the veins partly black ; the entire base is black and punctured, and this is followed by a 
white spot; there is also a black patch on the interior margin just behind the middle, and the costal 
margin is dark just before the apex ; legs more or less dark, but varying with the colour of the body. 
Long. cum tegm. 7-74 millim.; lat. int. hum. 2-24 millim. 
Hab. Mexico, Omilteme 8000 feet and Xautipa, both in Guerrero (H. H. Smith). 
CENTRICULUS, gen. nov. 
Elongatus, haud pubescens, capite longitudine latiori, supra caput plicato, ocellis basin versus sitis, oculis 
magnis prominulis; pronoto convexo, ad medium latissimo, sine cornibus, humeris prominulis, processu 
. postico brevissimo, recto, supra scutellum haud elevato, usque ad apicem hujus extenso ; tegminibus longis, 
levibus, sat angustis, opacis, ad medium hyalinis, basi late punctata, corio areis apicalibus quinque, 
discoidalibus duabus fere sequalibus oblongis, clavé vené una in disco distincté; alis areis apicalibus 
quatuor; pedibus sat teretibus. 
Elongate, with the head rather broader than long, the ocelli situated towards the base, but at some distance 
from it; pronotum convex, broadest in the middle, where the shoulders are prominent, without horns; 
posterior process very short, straight, lying along the scutellum, the apex of which it just reaches ; 
tegmina long, opaque, except across the middle, with almost the basal half punctured, with five apical 
areas and two oblong, almost equal, discoidal areas ; wings with five apical areas; legs, especially the 
posterior pair, rather slender, with the intermediate and posterior tibia, as is the case in several allied 
genera, minutely serrulate on their outer margins. 
This genus is allied to [schnocentrus, but may be easily distinguished from it by the 
formation of the pronotal process and the different character of the tegmina; these 
latter, at first sight, appear to have three discoidal areas, but in reality there are two 
only. 
1. Centriculus rufotestaceus, sp.n. (Tab. IX. figg. 22, 22 a.) 
Rufo-testaceus vel testaceo-cervinus, capite abdomineque ferrugineis, pectore nigro; capite distincte sed haud 
fortiter punctato ; pronoto fortius sat dense punctato, linea levi dilutiori centrali in processum posticum 
producto, hoc brevissimo apicem versus sensim dilatato ; scutello latitudine longiori, punctato ; tegminibus 
testaceis, opacis, parte medid hyalina, ad basin late fortiusque punctatis; pedibus testaceis, unguibus 
nigris. 
Rufo-testaceous, with the head and abdomen ferruginous and the breast black; head distinctly and not 
strongly punctured; prouotum rather strongly and thickly punctured, with a smooth light testaceous 
central line, which is produced behind into a very short process, the latter gradually, though slightly, 
dilated towards the apex; tegmina testaceous, opaque, with the central portion hyaline, broadly and 
strongly punctured towards the base; wings with fine testaceous veins ; legs testaceous, the claws black. 
Long. cum tegm. 6 millim.; lat. 2 millim. 
