TROGACTUS. 703 
1. Trogactus funebris. (Tab. XVIII. fig. 20.) 
Niger, tibiarum apicibus tarsisque rufis; opacus, omnino subtilissime densissimeque punctatus; prothorace 
cordato, disco obsolete bi-impresso. 
Long. 6 millim. 
Hab. Panama, Volcan de Chiriqui 4000 to 6000 feet, Bugaba (Champion). 
Antenne very elongate and slender, scarcely at all thicker externally; third joint 
longer than the second, several times longer than broad. Thorax slightly broader than 
the head, only about half the width of the elytra, about as long as broad; sides rounded 
in front, and much narrowed behind; surface quite dull, scarcely visibly punctate, the 
disc with two elongate vague depressions. Elytra ample, quadrate. Hind body 
elongate, scarcely visibly punctate. Three examples. 
2. Trogactus championi. 
Nigerrimus, tibiarum apicibus tarsisque rufis ; opacus, subtilissime densissimeque punctatus ; prothorace trans- 
versim cordato, disco longitudinaliter bi-impresso. 
Long. 7 millim. 
Hab. Panama, Pefia Blanca 3000 to 4000 feet (Champion). 
Very closely allied to T. funebris, but rather larger; the articulations of the antennz 
a little longer; the thorax slightly shorter and broader; the elytra a little longer, rather 
more than twice as long as the thorax; and the punctuation of the surface slightly less 
dense, so that the insect is not quite so dull. The tarsi are much longer than those of 
T. funebris. 
The only example captured of this remarkable insect is unfortunately in a very 
decayed condition. 
3. Trogactus elegans. 
Gracilior ; niger, antennarum apice pedibusque testaceis, femoribus extrorsum tibiisque fuscescentibus; sub- 
opacus, densissime subtilissimeque punctatus. 
Long. 5 millim. 
Hab. Panama, Volcan de Chiriqui 4000 to 6000 feet (Champion). 
Antenne very long and slender, the terminal two joints testaceous. Thorax slender, 
subcordate, very obsoletely bi-impressed on the disc; quite dull, without visible 
punctuation. Elytra slightly shining, densely and finely punctulate. ‘Tarsi very short. 
Also unique. 
4. Trogactus godmani. (Tab. XVIII. fig. 21.) 
Gracilior, sat nitidus; pallide brunneus, antennis pedibusque testaceis ; prothorace cordato, basin versus pro- 
funde impresso. 
Long. 34 millim. 
Hab. Panama, Bugaba (Champion). 
Antenne very long and slender, the middle joints very slightly infuscate. Thorax 
with a large impression (deep near the base, but becoming more shallow as it extends 
