MORGAN HEBARl) 
183 
><tructure similar, heavy. Heail with interocular space three-cpiarters as 
wide as that between the ocelli. Pronotum of the characteristic Nyctihord 
tyi)e, proi)ortionately broader with caudal anttnlation weaker than in aztcra. 
Teginina and wings showing marked reduction, but extending slightly be- 
yond the ai)ices of the short cerci. Venation as charact(‘ristic of Nyctihord, 
the wing veins, however, heavily suffused. 
Su])ra-anal plate transverse, the lateral margins straight and convergent 
to the two broadly rounded distal extremities, which are symmetrical and, 
joining mesad, form a rather weak, rounded median einargination. C’er- 
cus very broad fusiform, subspatulate, dorsal surface deplanate, lateral 
margins broadly convex, converging distad to the rather sharp ajiex. Paired 
l)tates beneath supra-anal plate with ventral portion of sinistral developed 
into a heavy, elongate, cylindrical shaft, directed mesad along the ventral 
margin of this plate and distad curving cephalad to its ac\ite apex. Sub- 
genital plate small, short lateral margins hairy, straight and convergent 
to distinct einargination on each side, in which the styles are set, between 
the.se symmetrical, weakly angulato-convex. Styles heavy, symmetrical, 
slightly over three times as long as broad, cylindrical, but showing dorsal 
and ventral flattening in proximal half, with apex rather sharjily rounded. 
'Farsal joints heavy, but slightly more elongate than is usual in iS yctihord. 
the caudal metatarsus as long as the combined length of the succeeding 
joints. 
rjeneral coloration shining dark chestnut brown, ])ile buffy. ings with 
veins suffused with mummy brown, this causing the anterior field to be in 
large portion suboiiaque, spreading over all but the proximal jjortion and 
the area narrowly adjacent to the median vein to its distal jiortion, wliich 
portions and the railiate fiehl are transparent. 
Length of boily, 21. .5; interocular width, 1.2; length of pronotum, G.S; 
width of pnmotum, 10; length of tegmen, 20.4; width ot tegmen, S.7 ; length 
of cercus, 8.4; width of cercus, 1.5; length of caudal femur, 8.7; length of 
caudal metatarsus, 3.2 mm. 
In addition to the type, three iinniature females, one large, two 
half grotvn, from Mllaviceneio, Intendencia del Meta, Colombia, 
taken in .Inly, 1917 and December, 1918, for A. Vlaria, are Ite- 
fore us. 
Tliese show remarkaitle features of coloration, for, though 
generally shining Itlackish brown, three to five terminal joints of 
the antennae and the distal half of the cerci are strikingly Itufiy. 
No such striking color characters are knotvn to us for immatures 
of the species of the genus Xyctibora. 
TR.\XS. .-^M. EXT. sor., XLVU. 
