BELOXORHryCHIDiE. 
13 
Scutes of dorsal and ventral series about twice as broad as long, 
obtusely pointed behind, and ornamented with prominent tubercu- 
lations; scutes of lateral line comparatively small; all the scutes 
much enlarged on the short and narrow caudal pedicle. 
Form. 6,' Loc. Lower Hawkesbury-Wianamatta Series (Upper 
Trias): Gosford, ’New South Wales. 
P. 6272. Two fragments of trunk. By exchange , 1890. 
Belonorhynchus macrocephalus, Deecke. 
l* -*(?) 1857. Ichthyorhynchns curioni, C. Bellotti, in A. Stoppani, Studii 
Geol. e Paleont. Lombardia, p. 436. 
(P) 1886. Belonorhynchus cfr. robustus, F. Bassani (ex Bellotti, MS.), 
Atti Soc. Ital. Sci. Nat. vol. xxix. p. 33. [Portions of head and 
trunk; Milan Museum.] 
1889. Belonorhynchus macrocephalus, W r . Deecke, Palaeontogr. vol. 
xxxv. p. 127, pi. vii. tigs. 1, 2. 
1892. Belonorhynchus macrocephcilus, F. Bassani, Mem. Soc. Ital. Sci. 
[3] vol. ix. no. 3, p. 6. 
1892. Saurichthys macrocephcilus, 0. M. Peis, Geogn. Jahresh. 1891, 
p. 154, fig. 9. 
Type. Imperfect fish. 
A species of large size, attaining a length of not less than 0‘45. 
Head with opercular apparatus occupying about one-third of the 
total length ; cranial roof tuberculated, and facial bones marked 
with prominent vertical striations; operculum deeper than broad. 
Scutes of dorsal and ventral series elongated, triangular, not much 
enlarged on the caudal pedicle; scutes of lateral line smaller, 
rhombic in form. 
Form. Loc. Keuper : Lombardy. 
Not represented in the Collection. 
Belonorhynchus tenuirostris (Munster). 
1710. Figures by Buttner, Budera diluvii testes, pi. xvi. fig. 9, 
pi. xxiii. fig. 3, pi. xxiv. b. fig. 1. 
1839. Saurichthys tenuirostris, G. von Munster, Beitr. Petrefakt. pt. i. 
p. 118, pi. xiv. fig. 3. 
1840. Saurorhynchus tenuirostris, F. Braun, Yerzeichn. Bayreuth 
befindl. Petrefact. p. 73. 
1846. Saurorhynchus tenuirostris, E. E. Schmid, in Schmid & Schleiden, 
Geogn. Yerhalt. Saalthals, p. 37, pi. iii. figs. 4, 5. 
1849. Saurichthys tenuirostris, H. von Meyer, Palaeontogr. vol. i. p. 201, 
pi. xxxi. figs. 29-32. 
1861. Saurichthys tenuirostris, E. E. Schmid, Nova Acta Acad. Ctes. 
Leop.-Car. vol. xxix. no. 9, p. 24. 
