10 NEUROPTERA. 
g. Thorax pitch-brown, varied behind with light ochre. (Abdomen discoloured—intermediate segments 
transparent whitish, with oblique broad lateral stripes recurrent from the narrowly piceous apical 
margins ; segments 8-10 opaque.) Sete whitish, with every joining in the part nearest the base, then 
every alternate joining, and presently every fourth joining black. Forceps as in Th. valens, except that 
the projecting lobe of the basis is oblong and obtuse. Fore femur intense pitch-brown, with the extreme 
base (like the coxa) more or less impure whitish, and with a pitch-black streak extending nearly from the 
base to a little beyond the middle; tibia bistre-hrown, piceous at the base and for some distance before 
the tip; tarsus and tip of tibia whitish-amber. Hinder femora reddish or purplish pitch-brown, with the 
base and a comparatively narrow band a little beyond the middle whitish ; tibiee and tarsi whitish-yellow- 
amber colour. Wings vitreous; fore wing with a small piceous cloud at the near end of the pobrachial, 
a cloudy streak at the near ends of the stems of the prabrachial and sector, and with the borders of the 
cross-veinlets also faintly clouded ; great cross-vein pitch-black, clouded, especially externally, with pitch- 
brown. Neuration (over white paper) very distinct to the naked eye; in some lights uniformly piceous, 
in other postures the cross-veinlets become pitch-black and the longitudinal nervures amber colour. 
Cross-veinlets arranged in the disk in about seven transverse series, reckoned along the sector, that extend 
to the hind margin; the marginal area contains about seven before and fourteen beyond the bulla, 
all well defined, of which a few in the pterostigmatic region are linked together. In the hind wing 
the great cross-vein and the extreme base of the stem of the subcosta are pitch-black. 
9. Thorax light raw umber, varied posteriorly with bistre-brown. (Abdomen eroded by cabinet pests.) 
Joinings of sete alternately black. The band nearest to the base of the femur is nearly obliterated, but 
blackish; the coxa and extreme base of the femur are whitish-ochre. In the marginal area of the fore 
wing about seven cross-veinlets precede and eleven, slightly curved, follow the bulla; in the disk, 
counted along the sector from its junction with the cubitus, are about eight transverse series of cross- 
veinlets that extend to the hind margin; neuration rather indistinct to the naked eye. 
Length of wing, ¢ 7, 2 8; sete, ¢, 16 millim. 
Hab. Mexico, Teapa in Tabasco (H. H. Smith; one 2 imag.); GuaTEMALA, San Juan 
in Vera Paz (Champion; one ¢ imag.). 
Other species of Thraulus are represented in Messrs. Godman and Salvin’s collection, 
but the specimens are unfavourable for description. ‘They are three in number, from 
as many separate localities, viz. :—-one ? imag. from Pantaleon, Guatemala (Champion) ; 
one ¢ imag. and one subimag. from San Gerdnimo, Guatemala (Champion) ; and one 
subimag. from N. Sonora, Mexico (Morrison). 
Genus .’ 
A new genus allied to Adenophlebia is represented in Messrs. Godman and Salvin’s 
collection by a single @ subimago from San Gerdénimo, Guatemala (Champion). 
Referring to the Analysis of the Genera of the Leptophlebia-type in Eaton, Rev. Mon. 
Ephem. p. 313, it would be scheduled thus :—(23) Tarsal claws all narrow and unci- 
nate. (24) Hind wing oblong-ovate, oblique, strongly angulated in front, with the 
marginal area of nearly uniform width from the base to the angle and then obliquely 
acuminate.—The first and second axillar nervures meet near the roots of the fore wing. 
Ventral lobe of the ninth abdominal segment (injured at the present time) formerly 
