ON THE FOSSIL PHYLLOPODA OF THE PALA/OZOIC ROCKS. 22Y 
No. 2 from Caer-y-coed, and 
of from Wern, as belonging probably to Cera- 
tiocaris, and possibly belonging to either C. latus or C. insperatus (if, indeed, 
these be not parts of one species, as intimated by Salter). The latter being 
the more distinctly a Ceratiocaris, its name is here adopted for the three 
specimens. This No. 2 from Caer-y-coed has the emarginate border- 
mentioned in the ‘Cambridge Catal. Pal. Foss.’ p. 7, which is altogether 
wanting in No. 1, = 
is 16u 
3. The third specimen in the Woodwardian Museum is fen consisting 
of a set of 8 or 9 broad (,%5 inch high) abdominal segments, from Caer-y-.- 
coed, and mentioned by Mr. Salter with the other two specimens from that 
locality. These seem to have been crushed laterally, like other specimens. 
that are definitely attached to ordinary Hymenocaris valves, and scarcely, 
A 
161’ Wood- 
wardian Museum, ;{, inch; and D .\,, Mus. Pract. Geol., 58; inch). It is. 
if at all, to exceed some of those in dimensions (for instance, 
» not large enough for ia H. major, and does not correspond with the body- 
segment of Ceratiocaris. 
Hymenocanis ? (Caryocaris, Salter) Sanrerr, M‘Coy, 1861. 
The references to this Australian species (from Redesdale, Victoria)- 
are given in full in the ‘ Catalogue of Australian Fossils,’ by R. Etheridge, 
Esq., Jun., 1878, p. 17. There is some uncertainty, however, as to its. 
generic relationship ; for in a paper written by Mr. Salter in 1862, and 
published in the ‘ Quart. Journ. Geol. Soc.’ vol. xix. 1863, pp. 135, &e., 
after noticing that the Australian Graptolites sent to the International: 
Exhibition in London (1862) were recognisable as belonging to the: 
Llandeilo series, as determined in the north of England, he adds in a 
footnote (p. 159): ‘There is even a crustacean [from the same Australian: 
beds], apparently of the genus Caryocaris, which M‘Coy has done me the- 
favour to name Hymenocaris Salteri.’ Thus it is evident that Salter saw 
one example, if not more, of this Australian species in 1862, and did not 
regard it as a Hymenocaris. 
Caryocaris, Salter, 1863. 
This small pod-like paleeozoic phyllopod abounds in the Skiddaw slate- 
(Lower-Llandeilo or Arenig group), at many places near Keswick, as at 
Braithwaite Brow, where specimens are numerous on many bed-planes ;: 
and Mr. Salter mentions Causey Pike and Grassmoor, Cumberland (‘ Catal. 
Pal. Foss. Cambridge,’ 1873, p. 21). H. Woodward mentions Barff and 
Longside, ‘Cat. Brit. Crust.’ p. 70. It has been collected by Mr. J. EK. Marr, 
F.G.S., at the Nantlle tramway, Pont Seiont, near Caernarvon (Upper-. 
Arenig group). See ‘Quart. Journ. Geol. Soc.’ xxxii., 1876, p. 134. The- 
tramway is here called the ‘ Wantlle railroad.’ The ‘ phyllopod crustaceans ’ 
mentioned at p. 135, and preserved in the Woodwardian Museum, Cam-- 
bridge, are several specimens of Caryocaris, and some smali caudal styles. 
which may have belonged to Caryocaris, though they resemble somewhat. 
those associated with the Upper-Silurian Peltocaris and Discinocaris in the- 
Coniston mudstone of Skelgill, also collected by Mr. Marr. 
Salter determined Caryocaris (‘ Quart. Journ. Geol. Soc.’ xix. p. 139) as 
