152 
Our Mount Kosciusko specimen may be defined thus — 
Piireatoicus australis, sp. nov ., Plates xxiii. —xxvi. 
Body with surface generally uneven, wrinkled, and with irregular 
depressions ; head and anterior portion of pleon smoother, a few 
rather short seta? scattered over the surface and forming a short 
thick fur on the dorsal portion of the last segments of the pleon. 
Eyes small, round. Upper antennae reaching to the end of the 
peduncle of the lower, peduncle apparently of three joints, the 
second much shorter and narrower than the first, third about as 
long as the second but narrower, not distinguishable from the 
flagellum which is composed of four joints with a minute terminal 
one and is somewhat swollen towards the end. Lower antenna? 
rather more than one-third the length of the body, peduncle of 
five joints, first four short, subequal, fifth half as long again as the 
fourth, flagellum longer than the peduncle. First pair of legs 
having the propodos large and swollen and forming with the 
dactylos a powerful subchelate hand. First five segments of pleon 
with pleura produced interiorly, rounded below, inferior and 
posterior margins fringed with long seta?. Uropoda with peduncle 
reaching about as far as the end of pleon, rami about as long as 
peduncle, outer ramus shorter than the inner. 
Length, about half an inch (12 *5 mm.), breadth, about one-tenth 
inch (2*5 mm.) Colour, (in spirit) legs and part of the body light 
brown, the greater part of the body almost completely covered 
with marbled markings of a darker brown. 
I fab. Mount Kosciusko Plateau — at Piper’s Creek, about 5,700 
feet above sea-level. 
This species does not differ so much as might naturally have 
been expected from the original species of the genus, Phreatoicus 
fj/jricuy , a blind species found in wells in Canterbury, New Zea- 
land. It is distinguished from that species however by the 
possession of eyes, by the colour, the much shorter lower antenna? 
and by a few other points in the surface of the body, the seta?, &c. 
I have given this brief diagnosis because T quite agree with the 
remark that Brooks makes in his “Report on the ‘ Challenger ’ 
Stomatopoda” to the effect that it is desirabje that a brief diagnosis 
of every new species should be given, although this should be 
supplemented wherever possible by a much fuller description giving 
the points in which it resembles other species as well as those in 
which it differs from them. I therefore proceed now to a detailed 
description of the various parts of the animal. 
Body , (Plate xxiii., tig. 1.)- — The length of the body is usually 
about half an inch, (12*5 nun.). It appears from the specimens 
that I have examined, that the female is slightly smaller than the 
