350 Mr. R. M‘Lachlan on new Genera 
albido-marginatis ; alis posticis pallidioribus ; pedibus nigris, 
femoribus (apicibus exceptis) flavis. 
Exp. alar. 73”. 
Habitat in China boreali. 5 
In Mus. Brit. 
Psocus grisescens, n. sp. 
P. cinereus; capite immaculato; antennis flavidis, apicem 
versus fuscescentibus, pilosiusculis; ocellis nigris ; alis 
anticis pallide cinereis, obscure nebulosis, venis fuscis, non- 
nullis przecipue in disco flavidis, pterostigmate elongato- 
triangulari, griseo ; alis posticis hyalinis, venis fuscis ; pedibus 
pallide cinereis. 
Var.—Capite linea media nigra, postice furcata. 
Exp. alar. 53—6}”. 
Habitat in Natalia. 
In Mus. Brit. 
Psocus infectus, n. sp. 
P. brunneus; antennis (articulis duobus basalibus exceptis) 
nigris, hirsutiusculis; naso, oculis, ocellisque nigricantibus ; 
mesothorace utrinque et antice nigro-piceo; abdomine 
brunneo, flavo-vario; alis anticis griseo-hyalinis, fuliginoso- 
nebulosis (praecipue ad angulum analem), nebulis irregularibus 
ad basin et ad discam vittaque elongata apicali sulphureis, 
venis fuscis, nonnullis sulphureis, pterostigmate griseo, tri- 
angulari; alis posticis hyalinis, venis fuscis ; pedibus lurido- 
testaceis, tibiis brunneis, tarsis nigris. 
Exp. alar. 8”. 
Habitat ad Bogota in Nova Granada. 
In Coll. mihi. 
Psocus reponens, Walker. 
Trans. Ent. Soc. ser. 2, v. 188. 
Two examples of this species from Mexico (Coffin), in the 
Oxford Museum do not differ from the Brazilian types described 
by Mr. Walker. The words ‘veins white” in the description 
(loc. cit.) are however incorrect ; the veins are dark fuscous. 
Psocus cosmopterus, n. sp. 
P. rufo-griseus ; antennis nigris, hirsutiusculis, ad basin rufo- 
griseis; capite macula nigra in medio postice posita, oculis 
nigro-signatis ; alis anticis sub-opacis, albidis, basi fascia ante 
