PLATOBERUS.—TOMARUS. 587 
3. Platoberus robustus, sp. n. 
Latus, rufescens, antennis ante apicem nigricantibus ; elytris post humeros impressis, seriatim minus subtiliter 
punctatis, crebrius minus subtiliter setosis. 
Long. 24 millim. 
Hab. Panama, David (Champion). 
This insect is very closely allied to P. rotundatus, but I think it will prove to be a 
different species, though there are only two examples to judge from. The punctuation 
of the elytra is more crowded and less fine; the elytra are considerably narrower, and 
I detect no longer sete amongst their pubescence. The metasternal coxal lines are 
very inconspicuous. ‘Two specimens. 
4. Platoberus divisus, sp. n. 
Minus, latus, rufescens, antennarum clava nigra; prothorace plus minusve infuscato; elytris versus basin. 
nigris, apice rufo, pube minuta vestitis. 
Long. 23-3 millim. 
Var, elytris rufis. 
Hab. Panama, Volcan de Chiriqui 3000 feet, Bugaba (Champion). 
In this species the elytra have the lateral depression much less marked than in 
P. latus; the serial punctuation is fine, and that of the interstices is but little different. 
The front margin of the prothorax is a little sinuate. There are no abdominal coxal 
lines, though on very careful examination a minute rudiment of their commencement 
can be detected. 
Eleven specimens; unfortunately most of them in a bad state of preservation. The 
colour is evidently variable, but in only one of the examples does it approximate to 
that of the other species. 
TOMARUS. 
Tomarus, Leconte, Classif. Col. N. Amer. ed. 1, p. 99 (1861); Reitter, Col. Hefte, xiii. p. 85 
(1875). 
This genus comprises a few described species, and is said to occur in the Caucasus 
and Japan, as well as in America. Leconte characterized it merely by some rather 
indefinite remarks. I have not seen the North-American species for which the genus 
was established, but the insects I here assign to it agree with the characters given by 
Reitter. 
1. Tomarus niger, sp. n. 
Niger, nitidus, convexiusculus, parce punctatus; prothorace fortiter transverso, basin versus haud angustato, 
lateribus subrectis. 
Long. fere 2 millim. 
Hab. Panama, Volcan de Chiriqui 8000 feet (Champion). 
4F* 2 
