1936] 
Trichoptera from the Fiji Islands 
33 
H Y D R 0 PS Y C H I D iE 
Hy dropsy chodes fijiana Mosely 
Many specimens from Wainganitu, Fiji Islands (W. M. 
Mann) . 
Hydropsychodes ruficeps Brauer 
Three females from Wainganitu, Fiji (W. M. Mann). In 
this species the subapical spot is further from the outer 
margin than in H. fijiana , and the submedian spot occupies 
most of the discal cell (in H. fijiana just before this cell) ; 
the cross-vein from first anal vein to cubitus is more basally 
placed than in fijiana and is very oblique, and just before it 
is a small patch of white hair (not shown by Brauer) . The 
dark band above antennae is broader than indicated by 
Brauer; the fork two goes back on discal cell further than 
fork one, but hardly as far as in H. fijiana; in the maxillary 
palpi the joints two and three are about equal, and four 
plainly shorter. 
Hydropsychodes piceus Brauer 
One female from Wainganitu, Fiji Islands (W. M. Mann) 
agrees fairly well with Brauer’s description; it is a little 
larger, fore wing nearly 7 mm. long; the discal cell is much 
smaller than in H. fijiana, and fork two is scarcely a bit fur- 
ther back on discal cell than fork one; the cross-vein from 
first anal vein to cubitus is much more basally placed than 
in H. fijiana, and is scarcely oblique, fork three is longer 
than in fijiana and very slender. In hind wings fork two 
goes back on discal cell two thirds the length of cell, and fork 
three is longer than in fijiana; the maxillary palpi have 
joints two, three, and four subequal in length, but four is 
more slender. 
Poly plectr opus manni sp. nov. 
Head yellowish, vertex scarcely darker, the warts yellow ; 
palpi and antennae yellowish; pronotum yellowish, meso- 
notum brownish, rather darker on the sides; abdomen pale 
brown above, venter paler; legs yellowish, spurs scarcely 
darker. Fore wings pale yellowish brown, with a long dark 
