THE 
GEOLOGICAL MAGAZINE. 
NEW SERIESHY DECADE “lili WOLERIV. 
No. X.—OCTOBER, 1888. 
Cnusnrennyp Arn /Namenanehrasnsy) 
T.—On Errow anriquus, BroperiP, sp., FRoM THE Lower Lias, 
Lymz-Reets, Dorset. 
By Henry Woopwarp, LL.D., F.R.S., V.P.G.S., 
of the British Museum (Natural History). 
(PLATE XII.) 
O far back as the year 1820, Schlotheim described in his Petre- 
factenkunde, vol. i. p. 37, certain Oolitic Crustacea from Solen- 
hofen, which he called Macrourites; but forms belonging to more 
than one genus were included by him under this name. 
We are indebted to M. Desmarest, in 1822, for the earliest descrip- 
tion of the genus Eryon from the Lithographic Stone of Solenhofen.’ 
A form of Eryon was described in 1835, from the Lias of Lyme- 
Regis, by Mr. W. J. Broderip,? F.R.S., under the name of Coleia 
antiqua. In the same year Prof. von Meyer described an Eryon from 
the Upper Lias of Rabenstein, Bavaria, under the name of EF. 
Hartinanni.’ 
In 1849 Prof. McCoy‘ described, but did not figure, an Hryon 
from the Lias of Leicestershire under the name of H. Barrovensis. 
Ten species of Eryon have been described by Schlotheim,’ Minster,® 
Etallon,’ Germar,® Fraas ° and Oppel,” mostly from the Lithographic 
Stone of Solenhofen. Eryon™ Eschert was described by Oppel from 
the Lower Lias of Schambelen, Switzerland, and Eryon Edwardsi 
by M. Moriére,” from the U. Lias of Calvados, Normandy. 
In 1866 I described and figured several British Liassic species of 
Eryon,® viz —E. Barrovensis, E. Wilmcotensis, E. Brodiei, E. crasst- 
chelis, and E. Moorei ; also E. Oppeli from Solenhofen. 
In 1881 I added another British species of Eryon, E. Stoddart, 
from the Stonesfield Slate, and EH. Neocomiensis,” from the Lower 
Cretaceous of Silesia. 
1 Nat. Hist. Foss. Crust. 1822, p. 128. 
2 Trans. Geol. Soc. 1835, 2nd ser, vol. v. p. 172, pl. 12, figs. 1 and 2. 
3 Bronn, Jahrb, 1836, p. 329. 4 Ann. Mag. Nat. Hist. 1849, p. 172. 
> Petrefactenkunde, 1822, p. 35, tab. 3, fig. 2. 
6 Beitrage zur Petrefk. 1839, vol. ii. p. 2. 
7 Etallon in Bullet. Soc. Geol. de Fr. 1858, xvi. p. 169, t. 4, figs. 1-3. 
8 Germar in Keferstein. Deutschl. 1827, iv. p. 99. 
9 Wiurttemb. naturw. Jahresh. 1855, xi. Jahre. p. 94. 
10 Pal. Mittheil. 1862, p. 8, tabs. 1-3. 11 Pal. Mittheil. 1862, p. x. t. 1, fig. 1. 
22 Bull. Soc. Linn. de Normandie, 1864, tome viii. p. 89, pl. vi. 
8 Quart. Journ. Geol. Soc, 1866, vol. xxiii. p, 493, pl. xxiv. and xxv. 
14 Grot. Mae. 1881, p. 529, Pl. XIV. Fig. 2. 
15 Grou. Mae. 1881, p. 530, Pl. XIV. Fig. 1. 
DECADE HI.—VOL. Y.—NO. X. 28 
