PLOCIOPTERUS. 353 
The species agrees in many respects with Erichson’s description of Staphylinus ornatus, 
from Cayenne, but the discrepancies lead me to believe the two are distinct. 
A small series was found at Caldera, and an extensive one at Bugaba. 
5. Plociopterus mollis. 
Niger; antennarum articulis tribus ultimis abdominisque apice pallide flavis, elytris cyaneis, fasciis duabus 
cinereo-pubescentibus ; abdomine parce punctato, segmentis medialibus parce cinereo-pubescentibus. 
Long. 15 millim. 
Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion). 
The antenne are black, with the exception of the very pale terminal three joints. 
The punctuation of the head is coarse, but leaves a large space along the middle smooth. 
The yellow colour at the apex of the hind body invades only the extremity of the 
penultimate segment, leaving it more than half black; the terminal styles are black 
behind. The male is only distinguished by a notch at the extremity of the last ventral 
plate. 
The unique individual has the hind body and front and middle femora of a dilute 
piceous colour, probably due to its being very immature. 
6. Plociopterus histrio. 
Rufus; capite abdomineque nigricantibus, hoc apice flavo, antennis pedibusque testaceis, illis articulis 6°-9™ 
fuscis. 
Long. 12 millim. 
Hab. Nicaracua, Chontales (Belt). 
In this species the fascie of pallid pubescence on the elytra are but little conspicuous, 
owing to the unusual colour (a sordid red) of the wing-cases. ‘The head is very coarsely 
punctate, and the coarse punctuation of the thorax is rather close; the hind body is 
only quite sparingly and finely punctured. The male has beneath, on the middle 
of the penultimate segment, a single long bristle springing from a minute fovea, and 
the hind margin of the following segment is slightly notched; the front tarsi are 
simple. 
Only two examples are extant. 
7. Plociopterus variegatus. (Tab. VIII. fig. 22.) 
Rufo-testaceus ; pectore abdominisque summo basi et medio nigricantibus, elytris viridescentibus, fascia trans- 
versa sat conspicua cinereo-pubescente ; antennis, palpis, pedibus abdominisque apice testaceis. 
Long. 12 millim. 
Hab. Panama, Bugaba 800 to 1500 feet (Champion). 
The punctuation of the rather small head is coarse, but leaves a very large space on 
the middle smooth. The thorax is only sparingly punctured, with a broad space along 
BIOL. CENTR.-AMER., Coleopt., Vol. I. Pt. 2, Aprid 1884. 22ZZ 
