Tillyard. — Studies of New Zealand Trichoptera. 



349 



the forewing of the male the venation is similar to that of the female from 

 the costa down to M 2 , except that the disco idal cell is much larger, Rs 

 bifurcating very close to the base. Below this there is an area of high 

 specialization, in which the thyridium and that portion of the main stem 

 of M lying basad to it appear to have become completely fused with Cu l5 

 and also with Cu 2 . M34-4 is unbranched, and leaves the cubitus distally 

 in such a manner as to suggest a normal cubital fork. The anal venation 

 is also abnormal, and cannot be interpreted with certainty. The hind- 

 wings of both sexes are closely similar, with fairly normal venation ; the 

 discoidal cell is closed, the median cell open, and apical forks 1, 2, 3, and 5 

 all present. 



Genotype : Zelandopsyche ingens n. sp. 



This genus differs from Pseudoeconesus and Oeconesus in the much larger 

 size and the form -of the maxillary palpi of the male ; in the two genera 

 mentioned the third joint is much swollen and of an oval shape. It also 

 differs from both genera in the peculiar specialization mentioned in the 

 male venation in the region of the thyridium of the forewing. It differs 

 further from Pseudoeconesus in having R2+3, forming the anterior border 

 of the discoidal cell, straight, and from Oeconesus in lacking the costal fold 

 and definite groove in the forewing. 



The three genera Oeconesus, Pseudoeconesus, and Zelandopsyche appear 

 to me to be so distinct from the rest of the family that they might 

 legitimately be placed together in a single tribe Oeconesini, distinguished 

 by their broadly rounded forewings and general superficially Limnephilid 

 appearance. Representatives of this tribe occur very rarely also in Aus- 

 tralia and Tasmania, but have not yet been described. 



Zelandopsyche ingens n. sp. (Figs. 1-3.) 



$ . Total length, 12-7 mm. ; abdomen, 8-2 mm. ; forewing, 19 mm. ; 

 hindwing, 16 mm.; expanse of wings, 38-5 mm. ; antennae, 21-5 mm. 



ant: 



Fig. 2. — Zelandopsyche ingens n. g. et sp., <? . Head viewed antero-ventrally. to show 

 bases of antennae (ant.), maxillary palpi (mxp.), and labial palpi (lp.). 



Head rich brown ; eyes black ; antennae brown, the articulations of the 

 oints beyond the scape only faintly indicated. Maxillary palps as described 

 or the genus, dark brown. Labial palps pale brown, slender, the basal 



