NORTH AMERICAN COLEOPTERA. 
87 
treniely fine and the basal impressions very shallow and vague; the elytral stria- 
are fine and sliarp, without punctures, the intervals flat, minutely alutaceous, 
the third with the tvvo dorsal punctures behind the middle; the prosternum is 
obtuse at tip and without marginal line. Length 6 mm. ; .24 inch. 
The specimen before me is a male. The first four joints of the 
anterior tarsi are dilated as in viinuta, but the middle tibiae are simple. 
Occurs in our fauna in southern Texas and Central America to 
Santarem, in Brazil. 
A. obloiiga n. sp. — Oblong, piceous-hlack, somewhat shining; antennse pi- 
ceous, the three basal joints and palpi rufo-testaceous ; head without frontal im- 
pressions, the surface extremely minutely alutaceous: thorax about one-third 
wider at base than long, sides arcuately narrowing to apex, median line very 
finely impressed, the basal impressions deep but short, surface minutel.v aluta- 
ceous; elytra oblong, sides feebly arcuate, strife sharply impressed but not punc- 
tate, not quite reaching the base, an ocellate fovea near the base of the second, 
intervals flat, verv minutely, sparsely punctate and finely alutaceous, the dorsal 
punctures of the third interval indistinct; body beneath more shining than 
above, the prosternum with marginal line at tip ; legs castaneous. Length 6 mm. ; 
.24 inch. 
This species is evidently closely related to lougula Bates, and may 
even be the same, although I can hardly apply his description of the 
thorax to my specimen : “ transversim quadrate, antice paullo magis 
quam postice angustato.” 
The surface sculpture is so minute that a moderately high power is 
required to detect the alutaceous structure and the elytral punctures. 
One specimen 9 » Texas near the lower Rio Grande. 
OODEN Bon. 
From the description given by Chaudoir, in 1882, it seems that the 
species known to us as texaims Lee. is the same as mexicanus Chev. 
0. duodecimstriafm Chev. According to Chaudoir, who has ex- 
amined types, this name should replace 0. Lecontei did. in our lists. 
STEXOC'REPIS Chd. 
A specimen in my cabinet collected near the lower Rio Grande 
of Texas seems to be referable to S. chalcas Bates {chalcoclirous Chd.), 
Biol. Cent. Am. Col. i, )i. 47. It is nearly as elongate as Lachno- 
crepis, but with a form of thorax as in our Oodes s.s. The striie 
are very distinctly punctate and the sides of the intervals crenate. 
The under side of the body is iridescent, the sides of the metaster- 
num with coarse punctures, the first two ventral segments at the 
sides with very coarse punctures. Prosternum not margined at tip. 
On the elytra the seventh stria is replaced by a row of extremely 
indistinct fine punctures. 
