100 
XiTHOLLs — Two New riireatoicid.i. 
In tlio possession of but very fo'w joints in the first untennaej 
of a 'well marked vertieal g'voove near the postciior border of the 
head, and of stout ]iectinate spines at the base of the rami of the 
uropods, in tlie well developed eondition of the eoxae of the peraeo- 
pods, and the in'onounced terminal projection uiion the telsoii, it 
aji'rees with P. australis and seems to iliffer markedly from P. 
shepliordi. 
In the reduction of tlie size of the eye and the fewness of 
the ommatidia, it rei)resents a eondition intermediate between the 
two Eastern Australinn forms; in the smoothness of the body and 
the reduetioii of tJie setae it approaches the condition of P. assimiUs, 
a state resulting' jn-obaldy from the o])eratioii of somewhat similar 
slieltered conditions of life. 
Distribiifioii. While P. australis occurs ap])areiitly wddely spread 
ill Tasmania at altitudes varying from sea-level to 4,000 feet, upon 
the mainlaid it seems to have survived only upon Alt. Kosciusko 
(d,7U0 ft.). I\ shephardi, first recorded from the Plenty Ranges in 
Southern Victoria, was subseipiently taken, apparently abundantly, 
upon the Parring'ton Tops, in New South Wales, some three to four 
hundred miles to the north. P. joyneri occupies a small sub-alpine 
region within the range of both of tliese forms. It is probable that 
all of tli(‘se sjiecies are survivors of a once wide spread form living 
at lower levels, but later restricted, possibly due to secular ciimatic 
clianges, to small and isolated sub-alpine regions where they have 
undergone specific differentiation. 
Eophreatoicus gen. nov. 
Body scaly, wrinkled transversely; head short, Avith Avell marked 
vertical gniove near jiosterior margin; eyes large; peraeou slightly 
compressed, first segment short, more or less fused Avith the head; 
2)leon relatively longer than in .PJircatoicus, strongly laterally com- 
pressed, last segment scarcely marked off from telson, terminal pro- 
jection slightly developeil. Ujtper antenna as long as (longer than) 
jieduncle of loAver antenna, tlageilum Avith numerous joints; loAver 
antenna stout, aliout one-third length of body. Alandibles Avith 
appendage, secondary dentate cutting edge, s})ine row and molar 
tubercle. Legs divided into an anterior series of four displaying 
small coxal joint, and the meros Avitli large anterior lobe ; and a 
j)osterior series of three, Avith basos, ischios and meros strongly 
expanded. Pirst pair of legs sub-chelate in both sexes, larger in the 
male than in the female, the fourtli leg in the male sub-chelate. 
Pleo])oda witli exopodite and endojntdite sub-eijual, Avith epi])odite 
on all l)ut till' first, without coujiling hooks; AA’ith cur\'e<l penial 
filament on second pleojiod strongly setose, not exceeding emlopodite. 
XJropod stout, slightly ex^ianded, liiramous, \'ery setose. Telson, 
