PEDEROMIMUS. 447 
others existing on each side not coarse. Scutellum and the extreme base of the elytra 
red, the former punctate on the middle. Elytra with only distant, moderately coarse 
_punctures ; about as long as the thorax. Tarsi slender ; the basal joint but little thicker 
than the following, slightly longer than the apical joint. Hind body red, the two 
penultimate segments more or less tinctured with black, and with numerous coarse, 
black, depressed sete; the other part of the hind body bears rather numerous, very 
elongate erect sete, which, however, are readily removed, so as to be more or less 
wanting in most of the examples. 
A few examples were found on the Volcan de Chiriqui and a very large series at 
Bugaba; but I have not detected any sexual distinctions. The only feature showing 
much variation is the depth of the black colour on the hind body and on the tibia. 
19. Pederomimus insolitus. (Tab. XI. fig. 21.) 
Rufo-testaceus ; capite nigro, subsneo ; elytris ex parte abdomineque ante apicem nigris; antennis in medio 
fuscis, apicem versus fusco-rufis ; pedibus abdominisque apice testaceis ; elytris crebrius punctatis; thorace 
seriebus dorsalibus fortiter 6- vel 7-punctatis. 
- Long. 84-94 millim. 
Mas, Capite majore, palpis labialibus difformiter dilatatis. 
Hab. Panama, Bugaba 800 to 1500 feet (Champion). 
Antenne slender, every joint longer than broad. Thorax elongate, the dorsal and 
lateral punctures coarse. Scutellum red, densely punctate. Elytra black, broadly red 
at the base, rather coarsely and not sparingly punctate. Hind body with the fifth 
segment, except at the extreme base, black; the sixth segment black, with the hind 
margin broadly yellow; the apical segment yellow; the terminal styles infuscate. 
The male has the head broader than the female, and furnished in proximity to the 
median channel with a very minute punctuation ; its labial palpi are very peculiar, the 
basal joint is incrassate, and the second joint is greatly dilated, so as to form an irregular 
quadrate plate furnished with a coarse abruptly curved seta, while the terminal joint is 
triangular, the triangle being articulated to the preceding joint by a slender base, 
forming a very short peduncle, placed at one side of the triangle; the front tibie in 
this sex are a good deal thicker than they are in the female, and there is a broad 
shallow notch on the last ventral plate. 
Six examples have been found; the one represented is a male. 
Though closely allied to P. angusticollis, the species differs in several details. 
20. Pederomimus angusticollis. 
Philonthus angusticollis, Er. Gen. et Spec. p. 487". 
Hab. Mexico! (coll. Sharp), Cordova (Sallé), Mirador (Hoge); GuaTEMALA, San 
Gerénimo, Volcan de Atitlan 2500 to 3500 feet (Champion). 
This species is apparently rare; the only two examples of the male I have seen are 
