woodward: fossil fishes of the upper lias of avhitby. 457 
recognised a nearly similar skull in the Lower Lias of Lyme 
Regis, and briefly recorded it (torn, cit., pt. ii., p. 143) under 
the name of B. anningim. In 1858,'" Quenstedt discovered the 
same type of skull in the Upper Lias of Wiirtemberg; and in 
this year also Bronn described and figured a small fish from 
the Triassic shales of Raibl, in Carinthia, which clearly 
exhibited a similar head fixed to a trunk which w^as certainly 
not that of Belonostomus. Bronn accordingly gave the new 
generic name of Belonorhynchus to the Triassic fish, and 
incidentally remarked that the so-called Liassic species of 
Belonostomus w^ould also probably prove to be wrongly named 
and belong to this newly recognised genus. Thirty years 
afterwards definite proof of the accuracy of Bronn's prediction 
was discovered in the Lower Lias of Lyme Regis ; f and it is 
now quite certain that the Liassic skulls in question belong 
to a fish resembling Belonostomus only in outward shape, 
zoologically inferior to the latter in the structure of the fins 
and in the absence of vertebral centra, also differing in the 
absence of a continuous covering of scales, i In Belonorhynchus, 
indeed, the trunk is only protected by four isolated longitudinal 
series of comparatively small scutes, which form a dorsal and 
ventral ridge and a support for the slime-canal of the "lateral 
line" on each side. 
Professor Blake doubts the origin of the t}^e specimens 
of B. acutus described and figured by Agassiz, owing to the 
lack of subsequent confirmatory discoveries. He supposes them 
to have reached Whitby from Lyme Regis in the ordinary 
course of trade, which was once brisk between the fossil 
dealers of Yorkshire and Dorsetshire. These doubts are still 
further emphasised by the apparent specific identity of the 
*r. A. Quenstedt, Der Jura, p. 234. 
fA. S. Woodward, "Note on the Early Mesozoic Ganoid, Belonorhyn- 
chus," Aiin. Mag. Nat. Hist. [6], vol. i. (1888), pp. 354-356. 
JA. S. Woodward, "The Fossil Fishes of the Hawkesbury Series at 
Gosford," Mem. Geol. Sur\^ N. S. Wales, Palseont. No. 4 (1890), p. 22. 
