FISHES OF THE PHILIPPINE ISLANDS AND ADJACENT SEAS 229 



Body elongate, partly rounded. Tail short. Head depressed. 

 Snout rather wide, rounded terminally. Eyes large, without nictitat- 

 ing folds. Mouth large, arched, deep labial fold and groove at each 

 mouth angle. Teeth sectorial, unlike in 2 jaws; upper pointed, cusp 

 more erect ; lower wider, cusp directed toward mouth angles ; median 

 tooth present above and below. Gill openings moderate, before pec- 

 toral. Scales small, close together, leaf -shaped, pedunculate on 

 trunk, with strong median keel and weaker laterals, sessile with con- 

 vergent keels on snout. Dorsals elongate, first near pectorals. Cau- 

 dal short, deep, subcaudal lobe not produced. Pectorals small, inner 

 angle little produced. 



Small deep-sea sharks, known chiefly by their leaflike scales. 



The following imperfectly known nominal species, described 

 briefly, without reference to dentition and squamation, though men- 

 tioning the first dorsal with a large black spot, is based on a fetus 

 424 mm. long. Giinther says "No distinctive characters can be given 

 from a single undeveloped example which is not in good condition" 

 and which he lists as "type of Centrophonis moluccensis^ Blkr." It 

 is admitted by Kegan and placed next to Centrophorus tessellatus 

 Garman with the statement "in the British Museum one specimen, 

 210 mm. in total length, type of the species." 



Centrophorus moluccensis Bleeker, Act. Soc. Sci. Indo-N^erland. (Amboina), 



vol. 8, p. 3, 1860 (fetus) (type locality: Amboina). — Regan, Ann. Mag. Nat. 



Hist., ser. 8, vol. 2, p. 54, 1908 (type). — Gabman, Mem. Mus. Comp. ZooL, vol. 



36, p. 201, 1913 (copied).— Fowler, Proc. 4th (1929) Pacific Sci. Congr., Java, 



p. 495, 1930 (reference). 

 Centrophorus granulosus (not Schneider) Dum^kil, Hist. Nat. Elasmobr., vol. 



1, p. 448, 1865 (note). — Gunther, Cat. Fishes British Museum, vol. 8, p. 420, 



1870 (types of Centrophorus moluccensis). 



ANALYSIS OF SPECIES 



o\ First dorsal higher than second ; snout and eye subequal ; snout 3% in head ; 



mouth width % (New Zealand) nilsoni 



a'. Second dorsal high as first dorsal. 



6*. Second dorsal base % of space to supracaudal origin ( Japan )_ tessellatus 

 b". Second dorsal base twice space to supracaudal origin (Eastern Atlantic). 



granulosus 

 o^ Second dorsal little higher than first. 



c\ Snout much shorter than orbit (Japan) steindaclineri 



(f. Snout greatly longer than orbit. 

 d\ Mouth width 2% to 2% in head. 



e\ Snout 3% in head (Japan) rossi 



e'. Snout 2% in head (New Zealand) kaikourae 



d". Mouth width 4 in head; snout 3^2 in head (New Zealand) waitei 



a*. Second dorsal barely over i/^ or more height of first dorsal. 



f. Orbit 21/^ in interorbital (Australia) scalpratus 



f. Orbit 1% in interorbital (Japan) , __. . foljaceus 



