NEW AUSTRALIAN SAW FLIES. 
215 
it is only distinguishable on colour characters, the thorax and abdomen being 
all red, while in C. divergens W. F. Kirby the mesepimeron, mesosternum, 
and metapleurae together with the last two or three abdominal segments are 
black, and the costa being yellow at the base instead of all black. The saw 
is however quite different ; it is more like the saw of C. flavicornis Benson 
(Benson 1934 (2) fig. 6a). The waved ridges on the side of the saw, however, 
suggest a link between the saw of C. flavicornis Benson and the spiny-ridged 
saw of C. ruficollis Benson. 
Clarissa males. 
In the collection were males belonging to four different species of this 
genus, but none of them seemed to belong to any of the described females. 
I have with some diffidence then described four new species based on the 
male sex only, which are separated in the key that follows from the already 
known males of C. atrata G. Turner and C. divergens W. F. Kirby. The male 
genitalia in this group seem to exhibit but slight and insufficient differences 
to be relied on yet for separating the species. 
1 . Pedicel clearly broader than long ^ 6 
Pedicel longer than broad 2 
2. Head and thorax metallic greenish -black ; abdomen, except tergum 1, entirely 
reddish yellow ; hind legs all black. Eyes strongly converge in front so 
that the malar space is linear diana sp. nov. 
Head and thorax shining black without metallic tinge ; abdomen, only 
yellow banded, being black at base and apex ; at least hind tibia 
mostly yellow. Eyes converge in front, but malar space is still at 
least half as long as the diameter of an ocellus 3 
3. Flagellum of antenna yellow ; the segments each being strongly swollen 
apically. Puncturation on temples and thorax very fine, almost obsolete. 
Wings slightly infuscate lucida sp. nov. 
Antenna all black ; the segments not noticeably swollen out apically. 
Puncturation on temples very fine and close. 
Wings hyaline 4 
4. Abdomen with whole of segments 2, 3 and often part of 4 yellow 
divergens W. F. Kirby. 
Abdomen with only apices of segments 2, 3 and 4 yellow 
atrata G. Turner. 
.5. Flagellum of antenna together with a band on abdomen and legs (except 
coxae, trochanters and tibial spurs) yellow. Inner apical spur to hind 
tibia, about half as long as hind basitarsus antennata sp. nov. 
