60 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 62. 
Waterhouse (Biol. Centr.-Amer., vol. 8, pt. 1, 1889, p. 185) states 
that he is unable to separate the specimens collected by Mr. Champion 
in Panama and Honduras from the type. It is represented in the 
National Museum Collection by three specimens received from F, D. 
Godman and labeled as follows: ‘ Bugaba, Panama, Champion” and 
‘“‘Volean de Chiriqui, 25-4000 feet. Champion.” 
LIUS MEXICANUS, new species. 
Male.—Elongate, broadly cuneiform, moderately convex and feebly 
flattened on top, strongly attenuate posteriorly, shining, and uni- 
formly aeneous above and beneath, with a slight cupreous tinge. 
Head feebly convex, broadly and deeply depressed on the front, 
the depression becoming obsolete on posterior part of occiput, with 
a narrow, deep, longitudinal groove, extending from the occiput to 
the epistoma, posterior to which the groove is broadly triangular and 
flattened, the sides arcuately rounded; front wide, about two times 
as wide as the transverse diameter of the eye; surface sparsely 
punctate, the punctures very shallow and obsolete, sparsely clothed 
with short, reeumbent, inconspicuous hairs; intervals finely, densely, 
and obsoletely reticulate-striolate posteriorly, becoming smooth on 
the triangular area behind the epistoma; eyes flattened; epistoma 
wide, the antennae widely separated. Pronotum feebly convex, 
nearly three times as wide as long at base, distinctly narrower in 
front than behind, widest at base; sides when viewed from above are 
parallel at base for a very short distance, then strongly, obliquely 
attenuate to the anterior angles; posterior angles obtusely rounded 
and feebly projecting; anterior margin feebly sinuate; base feebly 
sinuate to beyond middle of elytron, then turning obliquely back- 
ward to the scutellum, in front of which it is truncate; surface with 
an obsolete longitudinal groove at middle, sparsely, coarsely, and 
distinctly punctate, and sparsely clothed with short, recumbent, 
inconspicuous hairs; intervals finely and obsoletely reticulate-strio- 
late. Scutellum triangular; anterior margin truncate; surface smooth. 
Elytra moderately convex, slightly flattened on the top, as wide as 
pronotum at base; humeral angles obtusely angulated; sides nearly 
parallel to basal third, then strongly, arcuately attenuate to the tips, 
which are separately, narrowly rounded, the lateral margins rather 
strongly serrate; humeri rather prominent; each elytron with a broad, 
shallow depression at the base, a very narrow, shallow one behind 
the humeral angle, a broad, obsolete one behind the humerus, a 
similar obsolete one along lateral margin just behind the middle, and 
a broad, obsolete one along the suture at the apical third, which 
extends narrowly along the suture to the apex; surface wrinkled at 
the sides, coarsely, irregularly, and rather densely punctate, sparsely 
clothed with short, recumbent, inconspicuous hairs; intervals smooth 
