12 AUSTRALASIAN ANTARCTIC EXPEDITION. 
Tenent hair longer than claw, as shown in Text-fig. 4. 
AW 
Tig. 4.—Enlomobrya mawsoni n.sp. Claw, empodial appendage and tenent hair of hind foot. (x 368.) 
Abdomen with the first three segments short, partially fused, the fourth very 
long, and fairly distinctly separated off from the rest, the terminal segments very short. 
Spring, 1:6 mm. long, the manubrium and dentes each about 0-7 mm. long, 
the mucrones 28 » long. In the dead specimens, the dentes are usually much curved, 
as shown in Text-fig. 2. 
Fig. 5.—Entomobrya mawsoni n.sp. 
(a) Mucro and portion of dens (x 392). (6) Mucro, more greatly magnified. (x 596.) 
The microscopic structure of the distal end of the dens, and of the mucro, is shown 
in Text-fig. 5. The dens carries a series of minute crenulations or corrugations on the 
dorsal edge, and a series of fine short transverse lines arranged close to the ventral 
edge; both these structures are of the normal type met with in this and other closely 
allied genera. The hairs of the dens are also of the normal type for this genus, being 
slightly feathered and fairly stiff. The mucro is very short, with both teeth much 
curved, the dorsal tooth somewhat broader than the terminal, but of about the same 
Jength. Between the two teeth there is a very small blunt prominence. , Near the 
base, the mucro carries a stiff dorsal spine, not reaching quite to the tip of the dorsal 
tooth. 
