1357 
Genus Halosaurus Johnson 
Halosaurus JOHNSON, Proc. Zool. Soc, London, 1863, 
p. 406. Type Halosaurus ovenll JOHNSON, monotyplc. 
Halosaurlchthys ALCOCK, Ann. Mag. Nat. Hist., ser. 6, 
vol. 4, Nov. 1889, p. 454. Type Halosaurlchthys 
carlnlcauda ALCOCK, monotypic. 
Head without angular ridges. Snout obtusely rounded. 
Top of head scaly. Scales of lateral line scarcely enlarged. 
No second dorsal. Anal.high. Ventrals normal. 
