Genera and Species of Exotic Trichoptera. 255 
3° quam 2° paulo breviori; 4° etiam breviori; 5° 3° zequali, 
tenuiori. Alz anticz sparse pilose; medio dilatatee, basin 
versus anguste ; costa gradatim rotundata; margine apicali 
abrupte truncato et inde margine dorsali oblique juncto; 
radio ut in Ganonema ; alee postice anticis multo breviores, 
subtriangulares ; cellula discoidali aperta. Pedes tenuiores. 
Calcaria 2-4-4. (o ?.) 
Antenne very long and slender, about three times the length 
of the wings; basal joint bulbous, not so long as the head. Head 
nearly quadrate, prolonged in front between the antenne, and 
excavated below the basal joints of the latter. Eyes rather small, 
Ocelli none. Maxillary palpi very hairy ; the basal joint short ; 
the second very long; the third somewhat shorter; the fourth 
still shorter; the fifth as long as the third, thin and flexible. 
Mesothorax ovate, convex, sulcated in the middle above. An- 
terior wings with slight hairy clothing, which is thickest on the 
costal margin ; narrow at the base, much dilated in the middle ; 
costa gradually rounded ; apical margin at first abruptly and 
straightly truncated, and then very obliquely uniting with the 
dorsal margin about the middle of the wing ; or perhaps it should 
rather be said that the costal margin is abruptly bent down, form- 
ing a nearly right angle at the point of junction with the apical 
margin; dorsal margin nearly straight; neuration as in Gano- 
nema, excepting that the two branches of the ramus discoidalis 
are simply furcate. Posterior wings much shorter than the ante- 
rior, subtriangular ; discoidal cell open; fringes short, longer at 
the anal angle. Legs very slender. Spurs 2-4-4. (Abdomen 
wanting. ) 
It will be seen that Asotocerus agrees in almost all its charac- 
ters with Ganonema ; even the form of the wings may be only 
a specific difference. The character of the neuration, and the 
small size of the eyes, render it almost sure that the specimen 
from which the above generic description has been drawn up is a 
male, although the absence of the abdomen prevents absolute cer- 
tainty on this point. 
1. Asotocerus ochraceellus, n. sp. 
(Pl, X VIL, fig..2; “Ble XiX. fig. 2) 
A. antennis pallide ochraceis, nigro-annulatis ; palpis griseo- 
ochraceis 3; capite mesothoraceque ochraceis; alis anticis 
pallide ochraceis, marginem costalem versus late ochraceis; 
