UCALEGON. 65 
yellowish white depressed hairs. Beneath dull, densely and finely punctured; prosternum declivous 
behind, rounded, not prominent. 
Length 18-19 millim. (¢ 9.) 
Hab. Mexico (Truqui, Sallé, coll. F. Bates), Mexico city (Hége). 
This fine species is labelled Philolithus truquii in the Sallé collection, but is, I believe, 
still undescribed. 
UCALEGON. 
Mentum rather large, transverse, emarginate in front, projecting far beyond, but fitting closely to the bluntly 
toothed side-pieces of the submentum; labrum prominent, deeply emarginate, clasped by the mandibles ; 
ligula concealed; eyes narrow, strongly transverse; epistoma truncate in front; antenne with the 
third joint more than twice as long as the second, fourth to ninth decreasing in length, obconic, tenth 
broad, eleventh partly sunk in the tenth, small, short, rounded at the apex; last joint of maxillary 
palpi securiform; thorax with the angles prominent, lateral margins expanded’; elytra flattened nearly 
to the apex, then abruptly declivous, apex a little produced, prettily maculated with velvety spots, and 
with a curved dorsal ridge; epipleure broad, vertical, separated from the elytra by a sharply defined 
marginal carina; intermediate coxe widely separate, the cavities open externally, trochantin prominent ; 
femora rough, shining, with irregular coarse punctures and short scattered hairs; outer apical angle of 
anterior tibie produced into a long, sharp tooth; tibie and tarsi rather densely clothed with long, 
depressed, bristly hairs, the tarsi not sulcate beneath; intercoxal process broad, and truncate in front ; 
prosternum declivous behind, the apex a little produced and rounded; upper surface densely clothed with 
scaly hairs; scutellum long, triangular. 
Closely allied to Astda. Founded on one species from Mexico. 
1. Ucalegon pulchellus. (Tab. II. fig. 17.) 
Moderately elongate, convex, flattened above, dull black, pubescent, above densely clothed with brown scaly 
hairs. Head deeply impressed in front; prothorax broader than long, the lateral margins expanded about 
the middle and rounded, strongly narrowed before and behind, the hind angles rectangular, the anterior 
angles prominent and produced into a large subtriangular blunt tooth, the base truncate, with a central 
groove obsolete in front, the disc with a curved, feeble, smooth elevation on each side, the elevations well 
defined on either side by short, matted, dark brown hair, the surface with scattered fine raised points or 
granules, the disc rather smooth, the sides rugulose; elytra as wide as the thorax at the base, widened to 
beyond the middle, humeral angles obtuse, the base subtruncate, with a dorsal ridge, obsolete behind the 
middle, curving outwardly and parallel with the marginal ridge, and several velvety dark brown markings 
or spots, a large triangular spot on each side about the middle and near the suture, from which a few large 
or small spots extend parallel with the dorsal ridge to the base, enclosing a lighter brown space, towards 
the apex and on each side between the finely denticulated bare dorsal and marginal ridges are a few 
similar but smaller velvety spots, the suture is marked with dark brown, and a few brown spots are also 
scattered over the surface. Beneath coarsely and closely punctured, ventral segments finely and closely ; 
epipleure with large coarse punctures. 
Length 14-16 millim. 
Hab. Mexico (coll. F. Bates), Tehuantepec (Sallé). 
Three examples. Labelled Philolithus sumichrasti, Dugés, in the Sallé collec- 
tion. 
BIOL. CENTR.-AMER., Coleopt., Vol. IV. Pt. 1, October 1884. KK 
