i8 AUSTRALASIAN ANTARCTIC EXPEDITION. 
in Text-fig. 9a, and alongside it (Text-fig. 9b) the antenna, (at about one-half the 
magnification of the comb), so that its method of use may be more easily appreciated, 
The comb is formed by specialisation of the tibia of the foreleg. with its spur, and by 
the arrangement of the most basally situated set of the metatarsus as a series of 
closely placed bristles, much like the slender teeth of a fine hair-comb. The large curved 
tibial spur acts as a retinaculum, keeping the antenna pressed close against the row of 
fine teeth on the comb. The antenna is drawn through the comb from the'base upwards. 
Thus, the base of the antenna being narrow, the insect has no difficulty in inserting it 
between the retinaculum and the comb, and the cleaning process becomes more effective 
distally, as the antenna widens out. It is quite likely, also, that the tibial spur may 
have some power of springing, so that it gives way to the antenna slightly during the 
passage of the wider distal joints, and then moves back into place when the process is 
completed. 
This process has not, of course, been actually observed in this insect, but may 
reasonably be inferred from the known action of the comb in other Hymenoptera and 
from its structure in this species. 
Text-fig. 10 gives an outline of the ventral side of the female, showing the 
ovipositor not projecting beyond the end of the abdomen. ee 
Fig. 10.—Antarctopria latigaster n.sp. Brues, Female, Ventral view, showing ovipositor, (x 24.) 
Order: COLEOPTERA. 
Sub-order: POLYPHAGA. 
Division: STAPHYLINIFORMIA, 
Family: STAPHYLINIDA, 
The Collection included six imagines and about a dozen larve of a small Staphy- 
linid Beetle belonging to the genus Homalium. Some of these were contained in 
tube No. Co. 1, to which was attached the following Collector’s note :——‘‘ Small beetles 
and larva, common under stones and decaying animal matter. North End, Macquarie | 
