380 
oc.—Forty miles south-east of Elkedra Cattle Station 
(deserted), about ass miles south of Alexandria Cattle Sta- 
tion, oe Tablelar 
Na ee eg (Etheridge). 
AGNOSTUS AUSTRALIENSIS, Chapman. 
(P) Agnostus, sp., Chapman: Proc. Roy. Soc. Vict., xxi. 
(n839, pb. 1, 8, p. 268. E 
Agnostus arie ca y Chapman, Ibid, xxiii. (n.s.), pt. 11. 
1911, p. 314, pl. lviii., figs. 9, 11, 12. 
Obs. ihe e ma in this species differs from that of 
A. elkedraensis in the presence of the incipient spines at the 
posterior angles, and apparently by the absence of tubercles on 
the two lobes of the glabella. p 
Loc. —Dolodrook River, Mount Wellington District, 
Gippsland, Victoria. 
Hor.—Agnostus zone, Upper Cambrian (Chapman). 
Genus Micropiscus, pue 1864 (55) 
(Quart. Jour. Geol. Soc., , 1864, p. 237). 
Obs.—The name Microdiscus ed a iiri: history as 
related by Mr. C. D. Walcott, and may have to give way to 
that of Pemphigaspis : —''Tf Ht n pei a bullatus proves 
to belong to the same group [as Merodisc all 
the species now referred to Microdiscus inten then be replaced 
by Pemphigaspis, as Emmon's original name of M icrodiscus 
would not be retained, as it appears to is been founded on 
a specimen of the genus 7'rinucleus." 4 
Whilst the name Jierodiseus is PENES it must be 
ascribed to Salter, as explained by Lake.» 
y one species of this strange little genus has so far 
been discovered in Australian rocks. 
Micropiscus sicniFicans, Eth. fil. 
M. aden ae ms fil.: ES case SAL io RM ., No. 13 
«S. Austr. Parl. rs), 1902, 
Obs.—I am pes in ‘sleds ion g d anue d 
pee relating to M. significans, which appears to be a m mber 
the 
M. dawsoni-puctatus group, or those forms possessi nE 
a well-marked oe cervical spine and multi- 
segmented py 
I have i riim ined the type specimens in the light of 
Mr. Walcott’s genus Pagetia, but I failed to find any trace 
of of either "eye line" (pelpebral ridge) or eyes. 
a Emended: Walcott. 1886; non Microdiscus, Emmons. 
.G9 Walcott: Bull. U.S. Geol. Survey, No. 30, 1886, p. 154. 
Lake: Mon. Brit, Cambrian Trilobites, pt. ii., 1907, p. 30. 
