284 Transactions. 
€ as long as Ses, ending before base of Rs, much more so in male than 
n female; in male base of Rs is at about two-thirds of wing-length, in 
бен a little nearer base of wing, and the vein is consequently rather 
опсег. Discal cell about half as long ашын аз a Halteres rather 
dark vee Length of body, 5 mm. ; wing 
RTH lstAND: Wellington (G. V. Bubba. No. 1039), one male type, 
in British Museum. I think Walkers female specimen is probably the 
same species, in spite of the differences of venation indicated above. 16 is 
probably related to Hutton's D. monilicornis, but seems to be smaller and 
darker; there are evidently a number of related species in this group, and 
aa examination of Hutton's type will be necessary before it can be satis- 
factorily identified. 
Dicranomyia weschéi n. sp. 
Head blackish ; front rather heavily dusted with pale grey, apparently 
about one-fifth as broad as head. Proboscis brownish, shorter than head. 
Palpi dark brown. Antennae black, flagellar joints all rather shortly oval ; 
verticils a little longer than joints. Thorax ochreous-brown, praescutum . 
and scutum blackish-brown, except for shoulders and small area on each side 
just in front of suture. Pleurae slightly dusted with grey. Abdomen dark 
brown, last segment and ovipositor reddish. Anal valves of ovipositor 
slender, ed straight, little longer than last segment; genital valves 
rather short stout. Legs dark brown; coxae and bases of femora 
lighter. Wings faintly and uniformly brownish-tinged, rather strongly 
iridescent ; stigma darker brown, but not very conspicuous. Sc, about 
originates just before two-thirds of wing-length. ^ Halteres rather long, 
dark brown, base of stem light. Length of body, 6 mm.; wing, 7:5 rum. 
Norra ÍsuawD: New Plymouth, 23rd September, 1906 (W. Wesché) ; 
type female (unique) in British Museum 
Genus DiscoBoLA O.-S., 1865 (TRocHoBOLA O.-S., 1869). 
ll genus, prineipally desde in New Zealand, but with repre- 
sentatives also in Europe (two), North America (two), and Australia (one). 
one are known from the Oriental juae where the type appears to be 
represented by the allied genus Libnot 
The New Zealand species at сеа known may be distinguished by the 
following key :— 
1. Boer ee numerous dark a Liew the greater part of the 
Wings with markings more or CUm cake without numerous 
4 
2. А dark streak along costal margin of wing from base to tip.. striata n. sp. 
i surrounding i кх. 3 
3. Discal cell elongate and i sha bs .. picta Hutton. 
DEM cell пас elongate sacha ры eds QR 
4. 1 llate si a in the neighbourhood of the stigma 5 
A rue dak patch surrounding the 6 
5. Light-ochreous rpm 3 is m vs .. tesselata (O.-S.). 
á eap мое ; речне иаа black .. i ..  gibbera n. sp. 
š y two light areas on the costa : Ps $3 j i dson). 
Three light areas e the coi v. ix penne ето 
7. Wings with an uninterrupted central dark fascia e 00 «. ampla (Hutton). 
: * Wings with каса fascia interru ae SER 8 
. 8. A complete ring round base of Rs sa si .. суа n. sp. 
. Ring round base of Rs incomplete ss га ‘a dohrni (0.8. ). 
