PACHYLIA. 181 



almost obliquely convex, but slightly excavated near the tip and 

 above inner angle, or more decidedly excavated and rounded in 

 the middle, with the tip acuminated ; the inner margin deeply con- 

 cave above inner angle. The posterior wings are suddenly curved 

 above the tip, and the hind.margin slightly denticulated, or almost 

 straight. The legs are strong and moderately long, the posterior 

 tibiae having two very short external and two long internal spurs. 

 Male, antennas prismatic and well ciliated. Female, antennae 

 simple. 



The specimens of the perfect insects of this genus in my 

 possession most undoubtedly show strong affinities to that of Plii- 

 lampelus. I am at a loss to conceive wherein Mr. Walker can 

 perceive any affinity to Macroglossa, unless it be in resumens and 

 inconspicua. These species I have never seen, and the generic 

 diagnosis given above Cannot, therefore, include any structural 

 peculiarities which may characterize them. 



1. P. ficus Merian, pi. 33. 



Pale luteous brown, varied with dark brown. Head, thorax 

 and palpi dark brown. Abdomen pale brown on the sides and 

 between the basal segments ; the two basal segments banded with 

 blackish-brown. Anterior wings luteous-brown, with dark brown 

 markings ; a patch at the base and a single line nearly joining it, 

 three wavy lines crossing the middle of the disk, a conspicuous 

 discal spot, a patch near the origins of medic-superior and central 

 nervules, a small patch on the inner margin beneath it, consisting 

 of three short lines, the most posterior of which is the continua- 

 tion of the upper of three separated, denticulated lines curving 

 across the middle of the nervules. A semi-oval, apical, pale, 

 greenish-brown patch, pointed on the tip and bordered beneath by 

 a dark brown triangular shade, the tip of which reaches the inedio- 

 central nervule on the margin. Posterior wing pale luteous, with 

 a broad central black band and a broad marginal band of the same 

 hue tapering towards the inner margin, with an indistinct line of 

 the same hue above it; inner angle covered with niveous scales. 



Mexico ; West Indies ; S. America. 



CLEMENS. 



