MEGALOPS. 673 
12. Megalops guatemalenus. (Tab. XVII. fig. 22.) 
Brevis, nigerrimus, nitidus ; antennis rufis, pedibus flavis ; capite prothoraceque parce punctatis, hoc latiusculo, 
parum profunde sulcato ; elytris seriebus duabus abbreviatis punctorum impressis. 
Long. 3} millim. 
Hab. Guatemaa, Zapote (Champion). 
Antenne very short. Head with moderately large eyes, the discoidal space bearing 
a few definite punctures. Thorax with the two anterior grooves very shallow, the post- 
median one very broadly interrupted in the middle but deep at the sides; the grooves 
bear definite though not very large punctures, and there are also a few impressions on 
each side connecting the post-median groove with the basal punctures. 
Our two examples are no doubt females. 
13. Megalops panamensis. 
Nigerrimus, nitidus ; antennis rufis, pedibus flavis ; capite prothoraceque punctatis, hoc profunde sulcato ; elytris 
seriebus duabus punctorum impressis. 
Long. 3? millim. 
Hab. Panama, Bugaba (Champion). 
Although very similar to I. guatemalenus, this insect is quite distinct, the head 
having numerous coarse punctures on the upper portion, and the grooves on the thorax 
being very deep though rendered irregular by large punctures. The single example is 
no doubt a female, and has the terminal joint of the antenne considerably larger than 
in the same sex of I. guatemalenus. 
14. Megalops politus. 
Nigerrimus, nitidus; antennisrufis, pedibus flavis ; capite prothoraceque parce punctatis, hoc obsolete sulcato 
elytris seriebus duabus abbreviatis punctorum impressis. 
Long. 3? millim. 
Hab. Panama, Bugaba (Champion). 
Head with only three or four punctures on the discoidal area. Thorax elongate and 
rather slender ; the two anterior grooves very shallow, the post-median one very widely 
interrupted. Elytra with from four to six punctures in each series. 
In this species the punctures are distinctly obliterated from the basal margin 
of the thorax, or rather the few punctures that exist are placed not quite close 
to the margin. The lateral portions of the hind body bear a distinct pubescence. The 
unique exponent is a male; it is remarkable on account of the extreme elongation 
of the last joint of the antenne, this joint, moreover, being densely pubescent. 
BIOL. CENTR.-AMER., Coleopt., Vol. I, Pt. 2, January 1887. 4 RR 
