110 THE PLAGIOSTOMIA. 



snout rounded 



length from the nostrils little less than the distance between their 



outer angles intermedins (page 115) 



labial folds subequal, elongate 

 snout broad, blunt 



teeth with fine serrations .... vagatus (page 116) 



SCOLIODON SORRAKOWAH. 



Sorra koxoah Russell, 1803, Coromandel fishes, 1, p. 9, pi. 15. 



Carcharias sorrakowah Cuv., 1829, Reg. anirn., 2, p. 388; Bleeker, 1853; Verh. Bat. gen., 25, p. 80. 



Scoliodon laticaudus Muller & Henle, 1841, Plagios., p. 27. 



Carcharias (Scoliodon) laticaudus Muller & Henle, 1841, Plagios., p. 28, pi. 8; Dumeril, 1865, Elasm., 



p. 343; Gunth., 1870, Cat. fishes Brit, ruus., 8, p. 358; Day, 1878, Ind. fishes, p. 712, pi. 188, f. 1. 

 Carcharias (Scoliodon) macrorhynchos Bleeker, 1852, Verh. Bat. gen., 24, Plagios., p. 31, pi. 1, f. 1; 



Dumeril, 1865, Elasm., p. 343. 



Head long, depressed; snout longer than the distance from the eye to the 

 first gill opening, blunted at the end. Nostrils nearer to the mouth than to the 

 end of the snout. Mouth little wider than long, outline subangular in front; 

 labial folds short, on the lower jaws, not on the upper. Teeth in f| to || rows; 

 bases broad; cusps inclined obliquely out toward the angle of the mouth, sec- 

 torial, not serrated, the forward or cutting edge slightly concave to straight. A 

 •Small erect median tooth in the upper series, two small symphyseal teeth on the 

 lower. Fins rather small. Pectorals little longer than wide, not reaching a 

 vertical from the origin of the dorsal, hind margin concave. Base of first dorsal 

 nearly equal to the distance between the bases of the ventrals and the anal, 

 little more than that between anal and caudal, ending slightly forward of the 

 ventral. Ventrals small, origin below the produced extremity of the dorsal. 

 Base of anal elongate, equal to its distance from the caudal, fin acute. Base of 

 second dorsal less than half that of the anal, mid length above the end of base 

 of the anal, fin acuminate, not reaching the caudal pit. Tail moderate, sub- 

 caudal lobe prominent. Scales small, with three (3-5) strong keels which are 

 produced as spines. 



Light rusty brownish on the back; light to white below; fins darker, 

 darkening with age; caudal dark-edged above, white below; white of lower 

 surfaces extending to sides of head and snout. 



Total length 132, snout to abdominal pores 6|, snout to hindmost gill cleft 

 3a, and snout to mouth lg inches. 



Specimen described from Singapore, collected by Capt. W. H. Putnam. 



