MICROLERIDOPTERA OF NEW GUINEA 
95 
Valva narrow, cucullus elongate, moderately curved upward, top rounded, 
sacculus with a dense large brush of fine hairs. Aedoeagus rather long, 
moderately broad, little sclerotised, gradually curved, top rounded. Anellus 
long, erect. 
Ostium broad. Limen well-developed, mostly forming a T-shaped or 
erect-ovate median plate. Ductus bursae moderately long, rather narrow, 
cestum represented by one or more plicate sclerotized pieces. Bursa 
copulatrix spheroid, often very large, on the inside clothed with fine 
needles. Signa absent. 
Typus generis Metaschistis sappirof.ua spec, nov., male, female. 
Allied to Proschistis Meyrick, 1907, differing by the origin of vein 3 in 
hind wing, and to Herpystis Meyrick, 1911, but with thoracic crest well- 
developed; furthermore differing from both these genera by ascending or 
subascending palpi. Vein 3 originates distinctly from before angle, viz. 
Fig. 315: Mctaschistis sappiroflua gen. nov., spec, nov., male, head and wing 
neuration. 
from about 5 / 6 of the distance between 2 and 4, but is not, as in Herpystis, 
remote from 4, and parallel. The angle of the cell proper, i.e. the origin of 
vein 4, can easily be traced when observing the origin of vein 5 just above 
that point; 4 and 5 are equal in length, but 3 is distinctly longer (cf. 
lig. 315). Without carefully tracing the origin of vein 5, the situation of 
veins 3 and 4 can easily be misinterpreted, as these veins are seemingly 
connate. It is not impossible that the species of the present genus were 
met with before; they might have been erroneously attributed to Pro- 
schistis. 
The following eight species when studied superficially represent a 
heterogeneous lot, as to their colouring and markings; the neuration, 
however, is quite constant, and we do not hesitate to bring them together 
in the present genus. Six of the eight species have in common a series of 
single whitish short transverse costal strigulae. 
