726 PLAGIOSTOMATA— SELACHOIDEI. 



Habitat— Red Sea, East coast of Africa, seas of India to the Malay. Archipelago, and beyond ; attaining 

 at least 6 feet in length. It is common at Madras, where the example figured (12 inches long) was captured. 



Genus, 4 — Chilosctllidm, Miill. and Eenle. 



Semiscyllium, Miill. and Henle. 



Spiracle helow the eye. Fourth and fifth gill-openings close together. Nasal and buccal ca/vities confluent : 

 nasal valve with a barbel. Lower lip continuous or interrupted in the centre. Teeth small, triamgular, with or 

 destitute of, lateral cusps. Two spineless dorsal fins, the first above or behind the venirals, the second considerably 

 a/nterior to the anal, which is near the caudal. 



Geographical distribution.— Bea.& of India to the Malay Archipelago, and Australia. 



SYNOPSIS OF INDIVIDUAL SPECIES. 



1. Chiloscyllium Indicum^-lioyrer lip with the labial fold uninterrupted : angle of mouth nearer eye 

 than end of snout. Dark cross-bands, sometimes enclosing white spots : or even uniform brown. Seas of 

 India to the Malay Archipelago, and beyond. 



1. Chiloscyllium Indioum, Plate CLXXXVIII, fig. 3. 



Squalus Indicus, Gmel. Linn, i, p. 1503 ; Bl. Schn. p. 137. 



Squale dentele, Lacepfede, i, p. 281, t. xi, f. 1. 



Squalus Gronovianus, Lacepede, i, p. 280. 



Squalus tuberculatus, Bl. Schn. p. 137. 



Squalus, Russell, Pish. Vizag. i, p. 10, and BoJcee-sorrah or Ba-sorrah, pi. xvi. 



Scyllium plagioswm, Bennett, Life of Sir S. Raffles, p. 694. 



Scylliwm ornatum, Gray and Hardw. Ind. Zool. 



.'' Scyllium freycineti, Quoy and Gaim. Voy. Uranie, Poiss. p. 192. 



Ohiloscyllum plagioswm, and tuberculatwm, Miill. and Henle, pp. 17, 19 ; Cantor, Gatal. p. 392 ; Jerdon, 

 M. J. L. and Sc. 1851, p. 148 ; Sleeker, Plagios. pp. 17, 20, and Beng. p. 80 ; Dumeril, Poiss. i, pp. 328, 331 ; 

 Day, Fish. Mai. p. 267 ; Kner, Novara Fische, pp. 412, 413. 



Scyllium, griseum, Miill. and Henle, p. 19, t. iv. 



Squalus caudatus, Gronov. ed. Gray, p. 8. 



Scyllium Hasseltvi, a,nd phymatodes, Bleeker, Plagios. pp. 19, 21 ; Dumeril, 1. c. p. 331. 



Hemiscyllium, Malayanum, Bleeker, Nat. Tyds. Ned. Ind. vii, p. 376 (not Less.) 



Synchismus tuberculatus, Gill, Ann. Lye. Nat. Hist. New York, 1861, pp. 408, 413, t. vii. 



Ghiloscyllium indicum, Giinther, Gatal. viii, p. 411. 



Oorungun sorrah, Tam. : Ettee, Mai. : Poos-hee, Belooch. 



Head rather depressed and flatter inferiorly than superiorly. Eyes — small, with the spiracle (which is 

 of about the same size) below and slightly posterior to it. Lips surround the mouth, the lower labial fold 

 being continuous : the mouth at its angle 1/3 nearer the eye than to the end of the snout, which is obtuse. 

 Nasal valve with an elongated barbel. Teeth — small, triangular, with lateral cusps. Fins — the origin of the 

 first dorsal is just posterior to the base of the ventral, anteriorly it is slightly higher than long at its 

 base, which latter distance equals the length between the two dorsal fins, both of which have their anterior 

 and upper edges rounded : the second fin being somewhat smaller than the first and ending some distance 

 anterior to the origin of the anal. Anal notched, terminating close to the caudal fin, which is 'also notched 

 posteriorly, and about 6|- in the total length. From one to three smooth or tubercular ridges may exist along 

 the back, or such may be entirely absent. Colours — these vary exceedingly : they are usually gray with dark, 

 or even black, cross-bands, which may or may not include white spots : sometimes the cross-bands break up 

 into spots or bands, having dark edges : or the fish is simply of a reddish browii colour. 



Habitat. — Seas of India to the Malay Archipelago, and beyond. 



