NEPHANES.—PTILIUM. 145 
2. Nephanes pubescens. 
Nephanes pubescens, Matth. Trans. Am. Ent. Soe. xi. p. 141°. 
Oblongus, sat depressus, haud nitidus, castaneus, pilis griseis dense vestitus ; capite magno, antice sat producto ; 
oculis modicis, prominentibus ; pronoto sat parvo, transverso, quam caput haud longiore vix latiore, 
tuberculis minutis irregulariter dispositis interstitiisque reticulatis sat nitidis ornato, lateribus leviter 
rotundatis, pone media latioribus, margine basali fere recta, angulis obtusis ; elytris brevibus, quam caput 
atque pronotum nee longioribus nec latioribus, ordinibus transversis leviter sed confertim asperatis, late- 
ribus fere rectis, ad apices latioribus, apicibus latis fere rectis ; abdomine longius exserto, obtuso, dilutiore ; 
pedibus atque antennis longis, late flavis. Long. corp. es lin. =0°50-0°63 millim. 
Head large and broad, produced in front, closely and minutely tuberculate; eyes moderate and prominent ; 
antenne long, bright yellow. Thoraa short, transverse, not longer or wider than the head, covered with 
small tubercles irregularly arranged, with the interstices reticulate and slightly shining ; sides slightly 
rounded, widest behind the middle; basal margin nearly straight, with the angles rather obtuse. Scutellum 
large, triangular, closely asperate. lytra short, not longer or wider than the head and thorax, closely 
but lightly asperate in transverse rows; sides almost straight, widest near the apex; apex broad and 
nearly straight. Abdomen paler, long and obtuse. Legs long, bright yellow. Underparts dusky testa- 
ceous, rather deeply reticulate. 
Hab. Guatemata, Capetillo (Champion '). 
Differs from all other species of Nephanes in its longer form and dense pubescence. 
PTILIUM. 
Ptilium, Erichson, Naturg. Ins. Deutsch. iii. p. 26 (1846); Matthews, Trich. Illustr. p. 93, t. 8 
(1872). 
Body elongate, pubescent, moderately convex. Head generally large and prominent, sometimes sessile ; eyes 
large, often prominent. Zhoraa small, cordate or subquadrate, sometimes slightly constricted near the 
base, often marked with longitudinal lines on the disc; hinder angles not produced. Scutellwm large, 
triangular. lytra long, entire. Wings pedunculate, very long and narrow, fringed on each side with 
long movable sete. Abdomen with the pygidium exposed. Antenne 11-jointed, with the two basal 
joints large and incrassate, the intermediate generally long and slender, sometimes short, subquadrate, 
the ninth longer and slightly incrassate, and the last two forming a moniliform club, ornamented with 
verticillate hairs. Pulpi: mazillary long, 4-jointed, with the third joint very large, ovate-truncate ; 
apical joint acicular, long and slender; labial very slender, 3-jointed, with the apical joint very small, 
ovate. Prosternum rather large ; episterna narrow, trigonal; epimera very small, not enclosing the coxal 
cavities; coxal cavities small and oval. Mesosternwm moderate, elevated into a triangular carina broad 
at its base; episterna humeral, small and narrow; epimera very large and broad, extending to the coxal 
cavities ; coxal cavities oval, oblique. Jetasternum large, extending to the sides of the body; epzsterna 
concealed by the elytra, with their interior apical angle alone visible ; epimera concealed by the elytra, 
with their extremity slightly visible beyond the metasternum ; posterior coxe slightly separated. Venter 
composed of seven segments, nearly equal to each other in length. Legs generally rather short, the posterior 
pair being much shorter than the rest; cox very narrowly laminated; tibie often much dilated ; tarsi 
3-jointed, with the two basal joints very small. 
This genus contains a large number of described species from Europe and North 
America. Ptilium may be known by the unusual shortness of the hinder legs and the 
apparently bi-articulate club of the antenne. Its species are generally rare and very 
difficult to find; they are chiefly found under the sappy bark of trees. The three 
contained in this collection are exceedingly minute, P. hornianum being scarcely larger 
BIOL. CENTR.-AMER., Coleopt., Vol. I]. Pt. 1, February 1888. U* 
