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LAWR£NCE S. DILLON AND ELIZABETH S. DILLON 183
brown coalescent spots. Body beneath reddish-brown, rather thinly fulvous-gray
pubescent; metasternum laterally and posteriorly, and each stcrnite Interally, maculate
finely with dark brown. Legs Iuscous, thinly covered with fulvous-gray pubes­
cence. AntenDfLe d.'l.rk reddish-brown, scape black, thinly covered with fulvous-gray
pubescence, from third each segment indistinctly gray-annulate on basal one-third,
fourth, sixth, and eighth more distillctly so.
Head with a median impressed IiIlC from occiput to near epistoma; front COIl­
cave between Il.ntellnal tubercles, ne.uly smooth, beneath pubescence minutely punc­
tate; geMc vertical, minutely alutaceous; eye with lower lobe elongatc-ovate, one
and one-half times the height of gena; antennal tubercles prominent, robust, at ape. ...
produced into n. short, obtuse, robust horn. Pronotum transverse, si des feebly arc­
uate, slightly narrowed anteriorly, lateral tubercles moderate, with a short, robu;t
protess; an apical and a basal transverse sulcus; disk at middle ncar base with a
rOlmded, feebly elevated tubercle, the lateral discal ones very indistinct, base finely
punctate. Scutellum transverse, sides nearly straight, oblique, apex broadly rounded.
Elytra with sides feebly arcuate to apices, which are each slight-ly rounded ; disk at
base feebly gibbosc, feebly granulatc, cntircly coarsely, rather densely, deeply punc­
tate, laterally these punctures form rugosities, at llliddle sparse, then denser apically
but not so dense as ba.Mlly; humeri slightly prominent, anterior margin only very
feebly oblique, angle with a moderate-sized, elevated tubercle. Proslernum widened
behind middle; mcsosiernal process elllarginatc at apex. l'rocoxae prominent, an­
teriorly with. along, robill!t, blunt uncus which is directed inwardly ; femora clavate,
profemora pnrallel-sided on bas:'ll half, then clavate, on bnsal half of anterior and
posterior faces fillely rugose. Fifth sternite one-third again as long as fourth, apex
feebly emarginatc. Antennae one and two-thirds to one and three-fourths the
length of body, fimbriate beneath on four proximal segments; scupe not quite at­
taining middle of pronotum, robust, elavale, with two or three grooves beneath at
base, the first one deeper, rest or surface finely puncbte; third segment llcarly
twice as long as first..
LENGTH 18.5 mm.; widtll 7 mm.
'j'ype locality.-Toxpam, Mexico.
Distribution.-Central America.
GUATEl.ULA: &; no lotality dab; (L. Conradt) ; [A.NB.P.].
Remarks.-Bates in his oribrinal description states that the male
has very long frontal horns ; the discI'epaney in tbe above case is
probably due to the fact that the type is a much larger specimen.
Tybalntia mydas Lucas
Dllddere& mydas LucaB, in Castelnau, Anim. 1l0uv. ou rares du L'Arncr. du Snd,
1857, p. 189. Lacordaire, Gen. Col., [x, 1872, p. 679.
Apocoptoma /asciatus Lucas, loc. cit., pI. 13, fig. 2.
Tybalmia mydos Lucas. AuriviJIius, Cat. Col., pars 74, 1923, p. 341.
"Head, which is covered entirely with an olive-brown tomentum, is black, with
a fine median impressed line; armed with two very long horns, in thc form of a