354 ME. C. TATE REGAN ON SHARKS [Apr. 28, 



4. Brach^lurus. 



Brachcelurus Ogilby, Proc. Roy. Soc. Queensland, xx. 1906, p. 27. 



Head broad, depressed ; body elongate, somewhat depressed 

 anteriorly, subcylindrical posteriorly. Dermal denticles small, 

 imbricated, more or less distinctly keeled. Mouth transverse ; 

 teeth small, tricuspid ; lower lip divided by a symphysial groove. 

 Nasal valves separate, each with a cirrus. Eye small ; a longi- 

 tudinal fold below the eye. Sj)iracles moderately large, below the 

 level of the eyes and posterior to them ; each is surrounded by a 

 raised circular rim. Gill-openings of moderate width ; last three 

 above the base of pectoral ; last two a little closer together than 

 the others. Dorsal fins subequal, the first above or behind the 

 pel vies, the second in advance of the anal, which terminates 

 directly in front of the caudal. Caudal of moderate length ; axis 

 not directed upwards ; lower lobe notched posteriorly. Pectorals 

 broad, with straight or convex edges and rounded angles. 



A single species from Australia. 



1. Brach^lurus modestus. 



Ghiloscyllium modestum Giinth. Proc. Zool. Soc. 1871, p. 654, 

 pi. liv. 



Chiloscyllium fiirvimn Macleay, Proc. Linn. Soc. X. S. Wales, 

 vi. 1881, p. 364. 



Hemiscylliitm onodesium Waite, Rec. Austral. Mus. iv. 1901, 

 p. 88, fig. 9, and pi. iv. fig. 1. 



No dorsal keel. Mouth nearer to level of eyes than to end of 

 snout ; fold of lower lip not continuous ; nasal cirrus long, 

 extending to posterior edge of lower lip. First dorsal originating 

 above posterior part of base of pelvics ; free edge of the fin 

 straight ; length of base greater than the distance from second 

 dorsal. Origin of anal below the end of base of second dorsal ; 

 length of base of anal less than ^ that of the caudal. Pectoral 

 extending a little more than -^ of the distance from its origin to 

 that of the pelvics. Brownish, with more or less distinct darker 

 cross-bars and, in the young, with light spots. 



Coasts of Queensland and New South Wales. 



1. (550 mm.) stuffed, tj'pe Queensland. 



of the species. 



2. (580 mm.). Port Jackson. Imperial Inst. 



5. Orectolobus. 



Orectolohus Bonap. Faun. Ital. Pesc. 7 fasc. (1834); Gill, Proc. 

 U.S. Nat. Mus. xviii. 1895, p. 212. 



Crossorhinihs Miill. & Henle, Arch. f. Naturgesch. 1837, i. 

 p. 396, and Plagiost. p. 21 (1841). 



Crossorhinus (part.) Giinth. Cat. Fish. viii. p. 413 (1870). 



Head broad, depressed ; body elongate, more or less depressed 

 anteriorly, subcylindrical posteriorly. Dermal denticles small, 

 imbricated or juxtaposed. Mouth slightly arched, wide, sub- 



