474 MARGUERITE HENRY. 
irregular pits. Ocellus equal in size to the eye, square 
shaped. Antennules short, not reaching to the end of the 
rostrum. ‘Tail long and slender; fifteen pairs of anal spines. 
and a row of lateral combs present; end-claws long with 
strong secondary denticles. Colour yellow. Length of 
adult female 0°49 mm. 
Locality.—Kendall, collected in May from creeks on Mr.. 
Wallace’s farm. Type specimen in the Australian Museum 
No. P 4330. 
ALONA KENDALLENSIS sp. 0. 
(Plate XLI, flgs. 9, 10.) 
‘ The length of the adult female is 0°88 mm. Seen later- 
ally, the carapace is somewhat quadrangular, obliquely 
truncated behind. The greatest height, 0°49 mm., occurs. 
behind the middle. The dorsal and ventral edges of the 
valves are almost straight, the posterior edges are slightly 
arcuate. 
The head is somewhat depressed with an acute rostrum 
pointing downwards and almost reaching the ventral edges. 
of the valves. The forehead is very sloping, joining the 
dorsal edge of the carapace somewhat abruptly. The sur- 
face of the carapace is marked by distinct longitudinal 
striations. The ventral edge of each valve bears a row of 
long bristles, which are continued round the postero-ventral 
angle. 
The eye is of moderate size, with conspicuous crystalline 
lenses. The ocellus is very slightly smaller than the eye, 
and situated much nearer to it than to the tip of the rostrum, 
The antennules are narrow, and extend about two-thirds 
the length of the rostrum. The antenne are comparatively 
small; they exhibit the usual structure. 
The tail-piece (fig. 10) is very strongly built, nearly 
uniform in width throughout. There are twelve pairs of 
