. THRAULUS. 9 
cross-veinlets before the bulla, and about twelve beyond it, some of them curved; those in the disk, 
reckoned along the sector, are disposed in about nine slightly irregular transverse rows, and are scarce 
at the hind margin. Great cross-vein concolorous with the nervures. In this, as in the other sex, the 
cross-veinlets viewed in certain directions appear pitch-brown, while the longitudinal nervures are of 
a lighter or amber-colour. 
Length of wing, ¢ 8-9, 9 10; sete, g, 15-17 millim. 
Hab. Panama, Chiriqui (Mus. McLachlan; 3 imag.'), Volcan de Chiriqui 2500-4000 
feet and Bugaba 800 to 1500 feet (Champion; two 3g and one 2 imag.). 
A @ subimago in Messrs. Godman and Salvin’s collection, from San Isidro, Guate- 
mala (Champion), probably belongs to this species. 
5. Thraulus valens, sp. n. 
Subimago (dried).—Wings light fawn-grey approaching light vandyke-grey ; cross-veinlets of fore wing (not 
of hind wing) black ; longitudinal neuration in some lights yellowish, shifting with change of posture to 
dull light yellowish brown. 
Imago (dried).—Femora banded. Hind wing nearly as in Th. mexicanus, or that figured in Eaton, Rev. Mon. 
Ephem. t. 13. fig. 23*? (1884). (Ventral lobe of the ninth abdominal segment of 9 shrunken out of 
shape, but emarginate.) 
g. Thorax raw umber-brown above, varied posteriorly with light yellow-ochre; mesopleura darker, varied 
with piceous and ochre. Dorsum of abdomen light raw umber-brown, with the sides and venter lighter 
and the apical margins of the intermediate segments pitch-brown or black; in segments 2-6 or more an 
oblique dark streak is produced forwards on each side from the apical border. Set whitish, tinged at 
the base with raw umber; the joinings thereabouts alternately black and grey, but posteriorly all black. 
Forceps-limbs very long and slender, with the two terminal jointlets very short and minute; basis above 
their insertion produced behind into a short subacute triangular lobe. Fore femur dark raw umber or 
rufo-piceous, with a longitudinal black streak extending nearly from the base to the knee, and with the 
apical margin black ; tibia in some positions warmer in tint than the femur, black at the tip; tarsus 
light raw umber-brown. Hinder femora banded broadly with pitch-brown or blackish near the base and 
at the tip, leaving the extreme base paler, and a narrow dull whitish amber-coloured space just beyond 
the middle ; tibia amber-yellow, with the tip black ; tarsi in some lights only more opaque than the tibie. 
Wings vitreous ; the fore wing at the extreme base tinged with light yellowish amber or raw umber ; 
longitudinal neuration light yellow-amber, with the basis of the subcosta and radius more or less blackish ; 
cross-veinlets piceous, distinct to the naked eye and numerous, arranged in the disk in about ten or 
eleven transverse series (reckoning along the sector from its junction with the cubitus) that extend to 
the posterior margin. The marginal area contains from five to seven well-defined cross-veinlets before 
the bulla, and fourteen to sixteen beyond it, many of which in the pterostigmatic region fork and 
anastomose. In the hind wing a grey cloud is enclosed by the blackish great cross-vein and base of the 
subcosta ; the remaining neuration is either light yellowish-amber or colourless. 
Q. Very similar, allowing for sexual differences. The marginal area of the fore wing contains about eight 
cross-veinlets before and eighteen beyond the bulla. 
Length of wing, ¢ 11, 2 13; sete, g imag., 23 millim. 
Hab. Panama, Boquete 3500 feet (Champion; one g and one @ imag.), Caldera 
1200 feet (Champion ; one subimag.), Volcan de Chiriqui 3000 feet (Champion; one 
3 imag.). 
6. Thraulus hilaris, sp. n. 
Imago (dried).—Femora banded. Hind wing nearly the counterpart of that of T'h. meaicanus figured in 
Eaton, Rev. Mon. Ephem. t. 13. fig. 23** (1884). Ventral lobe of the ninth abdominal segment of 2 
emarginate. 
BIOL. CENTR.-AMER., Neuropt., April 1892. | C 
