PTINELLA. 129 
2. Ptinella pellucida. 
Ptinella pellucida, Matth. Trans. Am. Ent. Soc. xi. p. 117°. 
Sat lata et depressa, sat nitida, flava ¢, castanca 9, pilis pallidis dense vestita ; capite magno, antice rotundato, 
confertim tuberculato, oculis 2 nigris prominentibus ; pronoto breve transverso, quam caput multo breviore, 
haud latiore, tuberculis sat magnis confertissime obtecto, impressionibus duabus longitudinalibus in disco 
notato, lateribus marginatis et rotundatis, ad basin contractis, haud constrictis, margine basali recta, 
angulis rectis; elytris brevibus, quam caput atque pronotum nec longioribus nec latioribus, ad apices latis- 
simis, ordinibus transversis sat profunde asperatis, interstitiis nitidis, apicibus valde rotundatis ; abdominis 
segmentis quinque apertis segmento apicali sat acuto; pedibus atque antennis longis, robustis, flavis. 
Long. corp. 55; lin.= 0-63 millim. 
Heal very large, obtuse in front, closely tuberculate ; eyes black, large and prominent in the female; antenne 
long, very robust, yellow. hora# small, transverse, much shorter and not wider than the head; covered 
with rather large tubercles in transverse rows, with the interstices rather deeply reticulate ; sides rather 
strongly margined, much rounded, widest near the middle, contracted towards the base; basal margin 
nearly straight, with the angles rectangular; on the disc are two indistinct longitudinal impressions. 
Scutellum large, triangular, deeply asperate. Hlytra short, not wider or longer than the head and thorax, 
widest at the apex; deeply asperate in almost straight transverse rows, with the interstices reticulate ; 
sides margined and straight; apex broad and very much rounded. Abdomen rather broad, with five 
segments exserted, the terminal segment rather acute. Legs long, robust, yellow. Underparts wholly 
yellow. 
@ entirely castaneous, with the wings secn through the elytra as wide black vitte. 
Hab. GuaTEMALA, San Gerénimo, Zapote (Champion!). 
Differs from P. flavidula, Fairm., in its much smaller size, shorter thorax, and deeper 
sculpture; from P. qguercus, Lec., in its larger size, more depressed form, and much 
deeper sculpture. 
3. Ptinella incerta. (Tab. III. fig. 21.) 
Ptinella incerta, Matth. Trans. Am. Ent. Soc. xi. p. 118°. 
Elongata, angusta, convexa, obscure castanea, nitida, pilis brevissimis flavis parce vestita ; capite sat longo, obtuso ; 
oculis retro positis, sat magnis, prominentibus ; pronoto parvo, quam caput parum latiore haud longiore, 
prope medium latissimo, basin versus fortiter constricto, tuberculis magnis confertim obtecto, depressionibus 
duabus ovalibus basin versus impresso, lateribus marginatis, antice rotundatis, postice constrictis, margine 
basali fere recta, angulis acutis, prominentibus; elytris longis, angustis, subparallelis, quam caput atque 
pronotum longioribus vix latioribus, nitidis, convexis, confertim et profunde asperatis, apicibus concoloribus 
valde rotundatis, extremis albidis; abdomine segmentis quatuor apertis, segmento apicali et parte majore 
precedentis lete flavis, apicali acuminato; pedibus atque antennis longis, flavis. Long. corp. 74 lin. =0°87 
millim. 
Head long, obtuse in front, closely and finely tuberculate, or alutaceous; eyes placed far back, rather large and 
prominent; antenne long, dark yellow. Zhorawx small, rather wider but not longer than the head, widest 
near the middle, strongly constricted towards the base, closely covered with large tubercles, with two oval 
depressions near the base; sides margined, rounded in front, and much constricted towards the base ; basal 
margin nearly straight, with the angles acute and prominent. Scutellum small, elongate triangular, deeply 
asperate. lytra long and narrow, subparallel, longer but scarcely wider than the head and thorax, 
convex and shining, closely and deeply asperate; apex much rounded, with the extreme edge white. 
Abdomen with four segments exposed, the apical and the greater part of the penultimate segment bright 
yellow, the apex acuminate. Legs long, dark yellow. Underparts castaneous, with the mouth, coxe, and 
greater part of the venter bright yellow. 
Hab. GuateMALA, San Gerénimo 3000 feet (Champion *). 
BIOL. CENTR.-AMER., Coleopt., Vol. II. Pt. 1, January 1888. S* 
