FISHES OF THE PHH,IPPINE ISLANDS AND ADJACENT SEAS 89 



Depth 8% to subcaiidal origin ; head 5iy4, width I14. Snout 21/10 in 

 head, as seen from above obtuse; eye 71/2 in head, 3 in snout, 2% in 

 interorbital, depth 1^/^ its own length; dentary width 2% in head, 

 with short labial folds at each mouth angle and broad lower lip free 

 across symphysis; teeth in 30 to 32 rows in jaws, triangular, edges 

 entire ; nostrils midway in snout length, cirri 1% in eye ; interorbital 

 2% in head, depressed. Gill openings narrow, third to fifth widest 

 and above pectoral base, fourth nearly conceals fifth. Spiracle 1% 

 in eye, close below and slightly behind eye edge. 



Scales rather narrowly triangular, small, each with single median 

 keel. Single median ridge on back. 



First dorsal begins close behind ventral bases, length II/4 in head, 

 hind lobe slight obtuse angle ; second dorsal begins nearer anal origin 

 than first dorsal origin, length 1% in head, hind lobe slight obtuse 

 angle; anal height 4% its length which II/5 in head or 1% in sub- 

 caudal length ; least depth of caudal peduncle 4% in head ; subcaudal 

 height 5% its length, highest medianly, length equals head ; pectoral 

 114, width 11/3 its length; ventral 1% in head, reaches back opposite 

 first third in first dorsal base. 



Pale brown. Thirteen transverse dark brown saddles on back, all 

 broader than pale interspaces. Dorsals each with 2 large dark 

 blotches. Several inconspicuous dark blotches on paired fins. 



Red Sea, South Africa, India, Malay Peninsula, Pinang, Singa- 

 pore, East Indies, China, Japan. 



1 example (with U.S.N.M. no 40032). China Seas. Australian Museum. 

 Length, 190 mm. 



Subgenus Synchismus Gill 



HEMISCYLLIUM COLAX (Meuschen) 



Squalus colax Meuschen, Index Gronow's Zoophylacium, Pisces, 1781. 



ChiloscylUum {Synchismus) co to a? Whitley, Australian Zool., vol. 9, p. 228, 1939. 



Squalus indicus Gmexin, Syst. Nat. Linn., vol. 1, p. 1503, 1789 (type locality: 

 Indian Ocean). — Walbaum, Artedi Pise, vol. 3, p. 520, 1792 (on Gronow). — 

 FoRSTEE, Fauna Indica, p. 13, 1795. — LAcfipiiDE, Hist. Nat. Polss., vol. 1, p. 

 280, 1796 (on Gmelin).— Schneidee, Syst. Ichth. Bloch, p. 137, 1801 (East 

 Indies), 



ChiloscylUum indicnm Guntheu, Cat. Fishes British Mus., vol. 8, p. 411, 1870 

 (Vizagapatam, Pinang, India, types of Squalus caudatus Gray and Chilo- 

 scylUum phymatodes Bleeker). — Martens, Preuss. Bxped. Ost-Asien, p. 

 409, 1876 (Hongkong, Bangkok, Singapore). — Day, Fishes of India, pt. 4, 

 p. 726, pi. 188, fig. 3, 1878.— GiJNTHER, Rep. Voy. Challenger, vol. 1, pt. 6, 

 p. 51, 1880 (Manila). — Karoli, Termesz. Fiizetek, Budapest, vol. 5, p. 148. 

 1881 (Singapore). — Meyer, Anal. Soc. Espan. Hist. Nat, Madrid, vol. 14, 

 p. 48, 1885 (Manado, Celebes). — Ogilby, Cat. Fishes Australian Mus., vol. 

 1, p. 8, 1888 (Chinese Seas).— Day, Fauna British India, vol. 1, p. 34, fig. 

 14, 1889.— Elera, Cat. Fauna Filip., vol. 1, p. 617, 1895 (Luzon, Santa Cruz, 

 Cavite). — Baetlett, Sarawak Gazette, vol. 26, no. 366, p. 134, 1896 (Mara- 

 tabas). — Jordan and Sn\'der, Annot. Zool. Japon., vol. 3, p. 38 (Nagasaki), 



