130 
As I have failed to trace sculpture on any other pygidium from Ncav 
S outh Wales, strictly referable to Phillipsia, this example is placed on one 
side as possibly distinct from the others. It may Ijc related to the Trilohitc 
I have named from Queensland, Grlffithkles Siceeti. As regards its general 
characters, it certainly is more nearly allied to the last indicated species (PL 
XXI, Pigs. G and 7), and P. grandis (PI. XXI, Phg. 5) in the flattened axis 
and 2 )lenne, than it is to P. duhia with its strongly arched subdivisions. 
Local'll >j and Ilor'izon. — Grcenhills, Paterson to Dungog Road, Co. 
Durham ((7. Cullen) : — Mirari Limestone, Carboniferous. 
Genus — GRIPPITIIIDES, Lortloch, 1813. 
(Geol. Report Londoiulerry, Ac , p. 310.) 
Geiefit HIDES ? sp. ind. 
n. XXII, rigs. 15 and IG. 
Sp. Char. — Pygidium semi-circular to ovate-triangular; axis long, 
arched, of thirteen segments and a terminal ajijiendage, gradually ta^iering ; 
jileurm of ten segments, curved downwards laterally ; limb nearly vertical, 
of about equal ividth throughout, except at the immediate apex ; axial groove 
dee^) and wide, the jdeurm and limb sejmrated by other very marked lateral 
grooves. Ornamentation consists of tubercles arranged in a single transverse 
series on each segment ; on the axis and pleurm four to eight, Init commonly 
six, graduating downwards ; on the limb, two ojqiosite each jileura, the inner 
always much the larger of the two. 
Ohs. — This jiygidium is obviously allied to Gr'ijjith'ides sem'intferus, 
Phill. s}).,^ and possibly to the Australian fossil figured under that name by 
the late Prof, de Koninck.^ Prom the sp»ecies j)roi)er it is at once distinguished 
by the absence of the tuherculated limb ; but as Prof, de Koninck made no 
mention of a similarly ornamental limb, I am constrained to regard it as 
distinct from the already known New South Wales fossil also. As I am only 
acquainted with the 2 )ygidium, I refrain from proposing a S 2 )ccific name, 
although satisfied that the Trilobite is quite different from any of our 
Australian forms so far correctly determined. 
1 111. Geol. Yorkshire, Pt. 2, 1836, t. 22, f. 8-10. Woodward, Mou. Brit. Carb. Trilobites (Pal, Soc.,, 
Pt. 1, 1883, t. 5. 
- Foss. Pal. Nouv.-Gallcs du Sud, Pt. 3, 1877, p. 348, t. 24, f. 9, 9«. 
