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VIII. New Genera and Species of Psocide. By Ropert 
M‘Lacutay, F.L.S. 
[Read 5th November, 1866.] 
Turs paper contains descriptions of such previously unde- 
scribed species of exotic Psocide as have come under my notice. 
Many of these are in the Oxford Museum, and have been kindly 
placed in my hands by Professor Westwood. Two new genera 
are described, one of which, Newrosema, is quite a novel form; 
the other, Eremopsocus, more nearly approaches Psocus. The 
number of species of Psocus is apparently very great, and it 
will soon be necessary to examine how far it may be requisite to 
transfer some of these to separate genera; some of the Ameri- 
can and Ceylonese species will certainly have eventually to be so 
separated. That I have not here taken the initiative on this point 
is owing to the fact that I consider a still closer acquaintance 
with allied forms prudent before proceeding further.* 
Tuyrsopuorus, Burmeister. 
Thyrsophorus bellus, n. sp. 
T’. piceus ; antennis pilosis, nigricantibus, ad basin rufescenti- 
bus ( articulo 3° haud incrassato); capite piceo ( ¢ infra 
pallido) ; scutello pallide vario ; alis hyalinis, anticis maculis 
in dimidio basali ( @ ) intense fuscis, fascia media ¢ vittaque 
apicali testaceo-fumosis, pterostigmate triangulari, miniato, 
venis nigricantibus ; pedibus castaneis; ¢ tibiis tarsisque 
anticis et tarsorum intermediorum posteriorumque apicibus 
infuscatis. 
Var. (2 ?)—Alis anticis maculis in dimidio basali intense fuscis, 
sed vitta apicali nulla; pterostigmate flavo marginato ; venis 
apicalibus flavis. 
Exp. alar. 5—53”. 
Habitat in Brasilia (Dom. Bates). 
In Muss. Oxon. et mihi. 
* See postscript, p. 352. 
