X 
new Species of Blattide. sei 
length, sutural margins black, anal vein deeply impressed, 
mediastinal vein sending several branches to the margin, 
costals numerous. Wings dark castaneous, ulnar vein with 
nine branches. Abdomen entirely black, except apical half 
of subgenital lamina, which is flavo-testaceous ; supra-anal 
lamina triangular, produced; subgenital lamina ample, its 
lateral margins shortly produced ; cerci black (mutilated). 
Legs black ; front femora unarmed, mid femora with four 
spines on posterior margin, none on anterior margin; hind 
femora with two spines on posterior margin, none on anterior 
margin; genicular spines on second and third femora; formula 
of apical spines 2, 4, 1. 
Total length 26°38 mm.; length of body 17 mm. ; length 
of tegmina 23°8 mm.; pronotum 6 mm. xX 8°5 mm. 
Yarimaguas, Peru (Sallé, 1886); one example (Paris 
Museum). 
This species, that described below, and N. crassicornis, 
Burm., should probably be included in a new genus, charac- 
terized by the incrassated antennz, shape of the pronotum, 
and sparse armature of the femora. 
Nyctibora nigrocincta, sp. un. 
3. Head entirely black; antenne black, except apical 
joint, which is castaneous, incrassated, pubescent. Pronotum 
as in the preceding species, but with the lateral and posterior 
margins slightly reflected and with a very scanty recumbent 
pubescence, yellow, with a shield-shaped black mark on the 
disk. ‘Tegmina long, coriaceous at base and reticulate, not 
pubescent ; four branches to the mediastinal vein, costals 
numerous ; colour yellow, radial vein at base, a broad streak 
on sutural margin of anal field, a broad band from near the 
costal margin to the sutural margin in the apical third, black; 
apex castaneous. Wings fusco-castaneous ; a broad pre-apical 
yellow band; costals irregular, six branches to the ulnar vein. 
Abdomen black above and below; supra-anal lamina tri- 
angular ; subgenital lamina produced, very convex, with two 
styles; cerci black. Legs black ; front femora with no spines 
beneath ; mid femora with three to four spines on posterior 
margin, none on anterior margin; hind femora with five 
spines on posterior margin, none on anterior margin; geni- 
cular spines on the mid and hind femora; formula of apical 
spines 9, 1, 1. 
9. Similar to ¢, but rather larger, the black band ex- 
tending right across the tegmina, castaneous apex of tegmina 
more extended, subgenital lamina as in N. bicolor, mihi. 
