86 
■Nioiioi.i/S — hliixl A mphipod from Victoria 
lacks, also, tlie ])lumose setae of N. fultoiii. The terminal joint is 
exti'emcly minute. Tlie inner ramus, however, is relatively larger 
and with but a single apical sjiine, in i)lace of three in N. spcnceri 
or the two ])lumose setae of N. fultonl. On the whole, in the con- 
<litioii of this ii!'(t]) 0 (l, this s])ecies agrees rather more closely with 
A'. (Iiomsani than with either of tin' two eastern mainland forms. 
T!u‘ telson resembles, in shaiie. that of N. fultoid^ being dis- 
liiudly longer than l)road. In N. .sp(‘iiceri the breadth e([iials the 
hmgth, while in Ah Uiomsoni the breadth is considerably greater than 
the lengtli. In the two latter, the. cleft is roughly half the length; 
in Ah fiiftoiii and Ah ohrirni the cleft is dee])er and the two portions 
nairower, Init tlie a]»ical cluster of three s])ines in N. spcnccri, N. 
tliom.soni ami Ah ohrirni is reduceel to two in Ah fultoni. 
Jyist of References. 
19126 
1900 
19012 
1909 
l>9:i 
Kig. 1. 
o 
4 . 
>). 
6. 
8. 
9. 
9a 
10 . 
Nicholls, 0. hh. Proc. Koy. Soc. W.A., Yol. 10, 1924. 
Xicliolls, (.!. Ih, Proc. Hoy. Soc. W.A,, Vol. 12, 1926 (in the 
press). 
Sayce, O. A., Proc. Hoy. Soc. Yie., \ol. 13, 1900. 
fSayce, (). A., Proc. Poy. Koc. Vic., A"ol. 15, 1902. 
Smith, Ih \\h, Trans. J^imi. Soc. Loud., Vol. 11, 1909. 
Thomson, G. Al., Proc. Hoy. Soc. Tas., 1892. 1893. 
PxPLANATTOX OF PLATE IX. 
All tignres are of Xeonijdiarpns obrieni (female). 
First Antenna. 
Secoml Antenna. 
Maxilli]>ed. 
Side-]date 1 and first Gnathopod. 
8ide-})late 2 and second Gnathopod, with marsupial plate 
and primary branchia. 
fSide-plate 3, first peraeopod, marsupial plate, primary and 
branched accessory branchia, 
8id(‘-})latc 6, base of fourth peraeopod. simple primary and 
braindnal accessory chanchia. 
Ttrus, uro])ods 1 — 3 and telson, in lateral view. 
Third uropod, inner vieAv. 
. Apex of third uro])od, more highly magnified. 
Telson, in dorsal view. 
br, l)ranchia; br\ accessory branchia; c, olfactory cylinders; 
m. niarsu})ial plate. 
Printed for ihc Uoynl Soriely of ‘Western Australia by R. S. 
Sampson, 071-973 Hay Street, Perth. 
