PERILOPA. 319 
1. Perilopa deplanata, sp. n. 
Rotundato-oblonga, parum convexa, disco planato, fere opaca, nigra, antennis pedibusque rufescentibus ; elytris 
seriebus regularibus setarum erectarum. 
Long. 53 millim. 
Hab. Panama, Bugaba, Volcan de Chiriqui, Caldera, San Miguel in the Pearl Islands 
(Champion). 
Antenne with large, subcircular basal appendage. Head with a transverse elevated 
line on the vertex. Thorax broad, but little emarginate in front, with coarse but very 
shallow punctuation, which is very dense on the disc, sparingly clothed with fine 
suberect hairs. Elytra quite flat on the disc, with very regular series of distant, erect, 
rather long, fine hairs of a fulvescent tint; between each series of hairs there are 
two irregular series of large but very shallow punctures; the interstices on which the 
hairs are placed are, when viewed from a suitable point, seen to be feebly grooved, 
each hair arising from a minute deep fovea (but these give rise to scarcely any 
appearance of a tuberculation of the interstices) ; the disc is quite flat, but immediately 
external to the seventh series of hairs the sides are abruptly deflexed. Under surface 
piceous, dull, impunctate; ventral segments black, shining, the fovea across the base of 
the last segment larger and deeper than those across the other segments. Male with 
the clypeus tuberculate in the middle; upper apical cusp of the left mandible dilated 
and rounded, the right mandible with the corresponding cusp elongated and turned 
abruptly upwards so as to form a rather long, erect tooth. 
This very distinct species will be readily recognized by the distinct duplication of the 
series of punctures between the rows of sete, and by the peculiar structure of the 
mandibles of the male. It was found not uncommonly under bark, and exhibits but 
little variation. The unique example from the Pearl Islands differs slightly in sculpture 
from the other specimens, and may possibly belong to a different species. 
2. Perilopa punctigera, sp.n. (Tab. X. fig. 14.) 
Rotundato-oblonga, parum convexa, disco planato, nigra, limbo picescente, antennis pedibusque rufescentibus ; 
supra setosa, elytris interstitiis subelevatis, nitidis, quasi subtuberculatis. 
Long. 4-43 millim. 
Hab. Panama, Bugaba, Volcan de Chiriqui, Caldera, David (Champion). 
Closely allied to P. deplanata, but readily distinguished by the sculpture of the upper 
surface, and the more distinct tuberculation of the thorax and elytra. The sculpture 
of the latter consists of duplicate series of punctures; the slightly raised interstices are 
quite shining, and, at the points where the serial sete are inserted in their minute 
fovee, appear to be obsoletely tuberculate. I cannot detect any peculiarity to indicate 
which are males of P. punctigera, though we have received a good series of the species. 
It exhibits some variation in sculpture: in some examples the interstices are more 
