26 AUSTRALASIAN ANTARCTIC EXPEDITION. 
the tube with the liquid medium when it was poured in, and may, therefore, be assumed 
to belong to some common and widely distributed species, or else to a species that may 
have been breeding out on the ship. As the paraffin wax sealing the cork of the tube 
was intact when I first examined it, it is clear that the flies were not introduced sub- 
sequently to the placing of the Collembola inside the tube. 
Fig. 21.—Psychoda sp. indet., found inside tube No, C. 24. 
(a) Fore-wing (x 16); R, to Rs, the branches of the radius; M, to My, the branches of the media; Cu,, First cubitus. 
(6) Antenna, (x 52.) 
In Text-fig. 21, I have drawn the forewing and antenna of this little Psychodid. 
It should be noted that the costal margin is less convex than usual, and that the fork 
of R 2 + 3 arises far distad, nearly up to the distal end of Rl. I do not know of any 
Australian species, either named or unnamed, which shows anything approaching these 
characters. 
Two specimens, on slide No. AAE 16, in the Australian Museum, Sydney. 
