52 
Psyche 
[June-Sept. 
NOTES AND DESCRIPTIONS OF ORIENTAL 
(ESTROPSYCHIN^ (TRICHOPTERA) 
By Nathan Banks 
Museum of Comparative Zoology 
There are a number of species in this group in the Orient, 
although for many years it was the custom to call every 
specimen of Polymorphanisus, P . nigricornis, and every 
(Estropsyche as (E . vitrina. 
Having a considerable number of specimens from India, 
it is seen that each is fairly constant in structural charac- 
ters, both of body and wings. 
Polymorphanisus 
The species of this genus fall into two sections ; one with 
the fourth fork sharply acute at base and extending well 
back on the median cell and with the fore wing not especially 
broad; to this belongs nigricornis and some allied forms; 
the other section has broad, rather short wings, and the 
fork four is broad at base and goes back but little, if at all, 
on the median cell; to this group belong indicus, ocularis, 
astictus. The females of the first group from Asia known 
to me can be separated as follows : 
1. Head swollen in front in a rounded lobe, mesoscutellum 
with two black stripes, discal cell very short tumidus 
Head not prominently swollen in front 2 
2. Fringe of mid tarsi blackish, antennae black 3 
Fringe of mid tarsi paler 4 
3. A dark spot on mesoscutellum, discal cell short, front 
legs pale unipunctus 
No spot on mesoscutellum, discal cell about one half as 
long as median cell, front tibiae and often femora 
blackish nigricornis 
