Capt. P. P. Kine’s South American Coleoptera. 191 
the base, a puncture on the disc upon the second stria, and several along 
the 8th ; antenna brown, base, palpi, base of anterior tibiæ and tarsi cas- 
taneous. 
A female from Monte Video. The mentum has a very depressed conical 
lobe in the middle, which does not accord with that of Argutor* ; nevertheless 
it agrees so well in other respects that I cannot think they ought to be sepa- 
rated. 
*13. OMASEUS MARGINALIS. Curt. 
Niger, nitens; thorace foveis duabus simplicibus; elytris profundè striatis, 
costa obscure viridi. 
Length 7; breadth 23 lines. 
Shining black; antenne fuscous, except at the base: head with 2 impressions in 
front: thorax quadrate-cordate, with a channel down the back, and a large 
deep fovea near each posterior angle, which is faintly punctured and 
almost acuminated. Llytra nearly thrice as long as the thorax, with 
deep striæ, the Ist abbreviated, 2nd and 3rd united at the base; 2 punc- 
tures on the 3rd stria below the middle, and another between the 3rd and 
Ath towards the base; the costa dull green, with punctures at the base 
and apex, which is rather strongly emarginate. 
The lobe of the mentum is entire. This appears to be a common species 
in Valparaiso and Chili: my specimens I received from Mr. Miller. 
14. OMasEus NEBRIOIDES. Curt. 
Niger, nitens; thorace foveis duabus medio profundioribus, basi multüm an- 
gustatis; elytris profunde striatis. | 
Length 6, breadth 23 lines. 
Shining black: antenne fuscous, except at the base: head with two impres- 
sions in front: thorax cordate-truncate, being narrowed at the base, 
where there are 2 foveæ, with a line at the bottom; the angles are acute 
and there is a channel down the back : elytra thrice as long as the thorax, 
with a yellowish tinge, deeply striated, 1st abbreviated, and and 3rd 
united at the base,2 punctures belowthe middle on the 3rd and one towards 
* Vide Curt. Brit. Ent. vol. xiv. pl. 666. f. 4. 
2c2 
