62 THE PLAGIOSTOMIA. 



outside of the nostril, continued in a fold along the outer side of the groove, 

 subcontinuous with the upper labial folds, with a short free end at the angle of 

 the mouth. Mouth medium, with short labial folds around the angles, and with 

 a deep transgeneial fold below the symphysis. Teeth small, triangular, com- 

 pressed, cusps with or without feeble lateral cusps. Eye small, elongate. Spir- 

 acle small, below the hinder part of the eye, with a low tubercle on the margin. 

 Gill openings moderate, hindmost widest, third to fifth above the pectoral, 

 fourth and fifth close together. Scales minute, sharp, with a median keel. 



Dorsal fins larger than the ventrals, bases equal, second little smaller, 

 hinder angles produced, sharp, hind margins deeply concave; origin of first 

 above forward portion of ventral base; origin of second about one length of base 

 farther back and one half length of base forward of the anal; extreme end of 

 second dorsal nearly above the origin of the anal. Anal fin short, narrow, base 

 equal two thirds of that of the subcaudal, width of free portion of the fin about 

 half the base. Pectorals rather narrow, angles rounded, hinder margins oblique. 



A seventeen inch specimen is brownish, with ten or more broad bands of 

 darker, wider than the interspaces : first band across the nape, second in front 

 of the first dorsal, third through the hinder part of the same fin, fourth in front 

 of and fifth through the posterior half of the second dorsal, sixth through the 

 anal, and the others through the caudal. Some individuals, are more or less 

 spotted with small areas of brown. The front edges of the gill openings are 

 white. A male of more than 26 inches is about uniform brown but retains the 

 white edges of the gill openings; he has a few scattered spots of brown. 



Description from specimens taken at Singapore and at the Philippines. 

 This is probably a species of which individuals reach a considerable size; on the 

 male mentioned the claspers are very small and immature. A specimen from 

 southern Celebes does not differ from those described above. 



Chiloscyllium plagiosum. 



Bokee Sorrah Russell, 1803, Coromandel fishes, 1, p. 10, pi. 16. 



liu Sorrah Russell, 1803, ibid. 



Scyllium plagiosum, Bennett, 1830, Mem. Raffles, p. 694. 



Scyllium ornatum Gray &. Hardwicke, 1832, 111. Ind. zool., 1, pi. 98, f. 2. 



Chiloscyllium plagiosum Muller & Henle, 1841, Plagios., p. 17 (part); T. Cantor, 1849, Malay. 



fishes, p. 392; Bleeker, 1852, Plagios., p. 17; Dumeril, 1865, Elasm., p. 328; Day, 1865, Fishes 



Malabar, p. 267. 

 Chiloscyllium margaritiferum Bleeker, 1864, Faune ichth. Obi, p. 5. 

 Chiloscyllium indicum Gunth., 1870, Cat. fishes British mus., 8, p. 412 (part). 

 Chiloscyllium indicum var. /ilagiosa Gunth., 1870, ibid. 



Chiloscyllium indicum Jord. & Fowler, 1903, Proc. U. S. nat. mus., 26, p. 605, f. 2. 

 Chiloscyllium plagiosum Regan, 1908, Proc. Zool. soc. Lond., p. 362, pi. 12, f. 1. 



