VOL. xv. (3) ‘‘CERATODUS” IN THE RHATIC 269 
constant forms, and described them under Agassiz’s name 
of C. parvus. Whilst admitting two specific names, he 
remarked that a fuller series of teeth might demonstrate 
that there was only one.’ 
Dr A. Smith Woodward holds Beyrich’s view that there 
is one only species of Cevatodus, but employs neither the 
German nor the English Professor's designation, but 
Agassiz’s name C. /atzss¢mus, because it “ is sufficiently 
appropriate to secure priority, and must be adopted.” * 
The specimen from Garden Cliff must then be called 
Ceratodus latissimus, L. Agassiz. 
Most of the teeth of the Cervatodus latisstmus from the 
British Rhzetic have come from Aust Cliff. Mainly 
through the exertions of Higgins, there are 350 specimens 
from this locality in the Bristol Museum, and useful series 
are possessed by the British Museum and the Museum 
of Practical Geology. The known records are appended : 
1 C. datissinus, Agassiz. Blue Anchor, near Watchet, West 
Somerset. (Collected by S. G. 
Percival and deposited in the 
British Museum, Nat. Hist.) 
2 n " “Dyke ” (fissure filled up with Rheetic 
: and Liassic rocks) in the quarry at 
the back of the Inn, Holwell, near 
Frome, Somerset. (Collected by 
L. Richardson.) 
3 " " Aust Cliff, near Patchway, near 
Bristol. 
4 on " Redland (or New Clifton), Bristol. 
(Collected by W. H. Wickes.) 
5 n " Pylle-Hill railway-cutting, Bristol. 
(Collected by the late Edward 
Wilson.)* 
1 Monogr. Sirenoid & Crossopt. Ganoids, Pal. Soc. (1878), p. 28. 
2 Trans. Leicester Lit. and Phil. Soc., n.s., pt, xi. (1889), p. 21. 
3 “ One small piece, very badly preserved, found on a loose block.” W.H. Wickes, 
in litt., July 21st, 1906. 
4 Quart. Journ. Geol. Soc. vol. xlvii (1891), table facing p. 546, and Trans. Bristol 
Nat. Soc, vol. vii., pt. 3 (1893-94). 
