81 
Niciiolls — Ncu) blind Amphipod [mm ]''ictoria. 
iiterestiii^' to note tiiat Komowliat similar stnirtiiu's oeeur in tlio 
^Western Australian form. Nconlpharpus br(niclii(dis, wlik-li is fro- 
:;|iieiitly taken in the Avaters of peaty s-\vamps and in sliallow lakes, 
die muddy floors of wliiidi are heavily loadi'd with deeomjiosing 
irgaiiic matter. 
Tlie speeies is named in eom])liment to Mr. F. (d. O’Brien, who 
was my companion in the long tramps over tlie Plateau. 
Neoniphargus obrieni sp nov. 
Tn general a])])('araiice somewhat (dosidy resembling N. 
tfultoni Sayce, it has a rather moi'e slender Iniild. particularly in 
Ithe pleon, where the segments are unusually shallow. 
Cephalon e(iual.s in length the first two ])eraeon segments. The 
side-plates are rounded, the first narrow and not so deej) as its 
segment; side-plates 2 and d eijual in width and deeper than their 
respective segments; side-])late 4 eniarginate, distinctly deeper than 
its related segment, Imt scarcely as wide as side-jdates 1 ami 2 
combined. Upon the ventral border of side-i>lates 1 — 4 there is a 
single seta anteriorly and a group of three or four setae ]iosteriorly. 
Pleon segments 1 — 'A with inferior margin rounded, jiostero- 
lateral corners angular, the S(“cond bi'ing ])i'olonged into an acute 
projection; posterior margin of the second, sinuous, of the third, 
notched. A pair of somewhat widely separated setae dorsally on 
the ])osterior margin of the second ph'on segment; near the anteidor 
corner of the infmdor margin of the ])leon segments are a couple 
of stout setae, notched sub-apically and set with a ciliuin. (in a 
male specimen examined, there were three of the setae on the 
second pleon segment.) Last segment with stout sjiinule on either 
side of the base of the telson, but none on jnmultimate segment. 
Telsoii, slightly longer than broad, (deft for two-thirds of its 
length. 
Eyes vestigial, not to be distinguished in spirit s])ec.iniens. 
Antenna 1 about two-fifths of the length of the body; peduncle 
with first joint once and a half the length of the second^ which is 
once and a half the length of the terminal joint; tiagellum 14- 
jointed, more than once and a half the length of the peduncle, witli 
olfactory cylinders upon all the articuli from the sixth onwards; 
accessory fiagelluni 2-jointed, barely as long as the two proximal 
joints of the primary fiagelluin. Antenna 2 barely two-thirds the 
length of Antenna 1, with prominent antennulary cone, terminal 
joint of peduncle little shorter than preceding joint; flagellum 
7-jointed, scarcely ecpialling the combined length of the two distal 
joints of peduncle. Olfactory cylinders on joints 3, 4, d, and 6 in 
the male, absent in the female. 
