Genera and Species of Exotic Trichoptera. 259 
cies in his genus Mystacida which should more properly belong to 
this. In my ‘“ Trichoptera Britannica” (ante, p. 116) I have shown 
that Selodes may be divided into two sections according to the 
neuration, and this seems to me the best character. The species 
vary in the length of the joints of the palpi, and also in the spurs 
of the anterior tibia ; this latter variation is of grave importance 
in this Order, in consequence of the character being considered of 
primary value. Rambur describes the anterior tibize as spurless, 
and this is apparently the case in some European species, but I do 
not feel sure that this is really so, because I can detect two very 
minute and almost microscopic apical spurs on those tibiz in some 
species; in others there is evidently one rather long apical spur, 
with no visible sign of a second. 
1. Setodes hemerobidides, n. sp. 
S. antennarum articulo basali, capite, thorace, “pedibusque 
griseo-albis ; alis nudis, latis, ad apicem obtusis, hyalinis ; 
anticis fusco-nebulosis, preecipue ad basin marginis costalis ; 
venis nigro-fusco striatis; ramulo superiore rami thyriferi 
haud furcato; alis posticis hyalinis; pedibus albidis; tibiis 
anticis unicalearatis ; abdomine viridescente; appendicibus 
inferioribus longis, sursum incurvatis. (Mas.) 
Long. corp. 23 lin. ; exp. alar. 7 lin. 
Habitat ad Macassar, in insula Celebes ( Wallace). 
In Mus. Saundersiano. 
Antenne (broken) with the basal joint whitish. Head naked, 
whitish, with grey streaks and a black mark externally at the in- 
sertion of the basal joint of each antenna. Eyes whitish-ochre- 
ous. Maxillary palpi whitish, the three first joints very long, the 
second fuscous at the apex. Mesothorax greyish-white. An- 
terior wings devoid of hairy clothing, broad, the apex obtuse ; 
whitish-hyaline, with greyish-fuscous clouds, of which there is a 
large one placed at the base of the costal margin, which is dilated ; 
another is placed about the middle of this margin, and smaller 
ones round the apex and about the anastomosis ; neuration scarcely 
darker than the membrane, but marked with blackish-fuscous 
streaks at the base, apex and anastomosis; the upper branch of 
the ramus thyrifer is not forked; the three transverse veins, 
forming the anastomosis, are straight, the first and third nearly 
opposite, the second placed a little within the others towards the 
base. Posterior wings hyaline, the veins slightly coloured. Legs 
