PINOPHILUS. 625 
Head and thorax very shining; the latter only slightly broader than long, coarsely 
punctate, the punctures absent from a small.space near the base on the middle, and 
from another space on each side near the front margin. Elytra much longer than the 
thorax, shining, red, very coarsely punctate. Hind body black, with the terminal two 
segments red; rather sparingly but not finely punctate, and with a scanty flavescent 
pubescence. Male with the last ventral plate prolonged and feebly emarginate behind ; 
ventral valve of the segment of the armature broader towards the apex, which is 
deflexed and with a deep emargination in the middle, the angle on each side slightly 
hamate. 
A good series of this species was procured; the variation seems very slight indeed, 
except that in immature examples the thorax (or the head and thorax) is more or less 
piceous or even rufescent. 
13. Pinophilus reflexus. 
Gracilis, nitidus, niger, laxe pubescens ; antennis, palpis pedibusque pallide flavis, elytris sanguineis ; prothorace 
haud transverso, lateribus rotundatis, basin versus angustatis, fortiter punctato. 
Long. 13 millim. 
Hab. Panama, Bugaba, Volcan de Chiriqui 3000 to 4000 feet (Champion). 
Closely allied to P. penetrans, but considerably more slender, with the hind body 
entirely black, and with the ventral valve of the segment of the armature in the male 
abruptly bent upwards so as to close the orifice of the body behind. The punctuation 
of the surface is not quite so coarse, and the antennz are more slender and shorter than 
they are in P. penetrans. The breast is red, but I am not sure that this is a constant 
character. 
The small series of about ten examples exhibits no variation. 
14. Pinophilus basiventris. 
Gracilior, nitidus, rufus; capite, pronoto abdominisque basi nigris; antennis, palpis pedibusque pallide flavis ; 
prothorace haud transverso, lateribus rotundatis, basin versus angustatis, fortiter punctato. 
Long. 12 millim. 
Hab. Brivish Honpuras, Rio Hondo (blancaneaur); GuateMaua, San Geronimo, 
Zapote (Champion). 
Though readily distinguished from P. reflecus by the colour of the hind body, which 
is lurid red with the two (or three) basal segments blackish, this species is in other 
respects externally similar thereto, though the thorax is apparently more slender ; but 
the male characters of the two species are different: in P. basiventris the prolonged 
portion of the last ventral plate is rounded and narrowed towards the tip; the ventral 
valve of the segment of the armature is bent upwards at the tip, but does not close the 
body, as it is pierced by a large orifice, due to a deep emargination of the reflexed 
apex. 
BIOL. CENTR.-AMER., Coleopt., Vol. I. Pt. 2, October 1886. ALL 
