182 [October 
neys,” ought to be published in detail. The larva of Sialis never 
travels far from the water. [/S'ee note 28.] 
HEMEKOBINA. 
Mantispa brunnea Say. Mr. Uhler’s note on this species is pro¬ 
bably an error. (Synops. p. 208.) The facts stated by him should 
be verified. It is contra leges naturse that an organ should be abused 
in that manner. \_See note 29.] 
HEKMANN HAGEN. 
Kcenigsberg, Prussia, 
April 3, 1863. 
Notes by Benj. D. Walsh. 
N. B.—There is great confusion in the description of the parts of the wing by 
different authors, arising from the fact that some consider the wing as ex¬ 
panded at right angles to the body, and some as closed. Hence in different 
authors the terms “anterior” and “posterior” are used in entirely different 
senses, some, as Dr. Fitch for example, considering the basal portion of the 
wing as the “anterior” portion, and others, including I think the great majo¬ 
rity, considering the costa as the “anterior” portion. In all my published 
descriptions I have endeavored, as far as possible, to avoid this ambiguity by 
using the terms “ basal,” “ costal,” “ terminal,” and “ interior,” instead of 
“ anterior” and “posterior” ,* but wherever I have, for one reason or other, re¬ 
tained these latter terms, I wish to be understood as speaking of the expanded 
wing. 
PSOCINA.—Psocus. 
Note 1, p. 167. Ps. QUIETUS Hagen. I failed to identify my spe¬ 
cies with quietus^ because the diagnosis in the Synopsis says,“ Thorax 
blacky wing-veins luteous” whereas semistriatus has the thorax black 
with the sutures conspicuously whitish^ and the wing-veins blacky or 
more properly speaking, perhaps, fuscous. 
Note 2, p. 167. As this species has never been described, I annex 
the following description of it, as well as of another species which I have 
met with since the publication of my Paper on Pseudoneuroptera. Both 
of them belong to this section of Psocus. 
