CARCHARINUS GLYPHIS. 141 



concave on the edges, more erect; bases broad, two-rooted; median teeth small, 

 erect. Width of gill openings more than twice the length of the orbit. Pectorals 

 long, length twice the width or more, reaching beyond the dorsal, angles rounded. 

 Height of first dorsal greater than length of base, origin above the axils of the 

 pectorals, upper angle rounded, hind margin concave, hind angle produced. 

 Second dorsal small, little longer than the anal and little farther forward in 

 origin. Anal small, origin below the forward half of the base of the second dorsal, 

 hind margin deeply excavated, length of base less than its distance from the 

 caudal. Caudal large, less than one third of the total length, subcaudal lobe 

 deep, depth nearly half of the caudal length; hind margin of subcaudal deeply 

 indented, separated from the pointed terminal fin by a shallow notch. 



Brown, light or greyish to dark, in cases mottled or spotted with darker; 

 Ughter to whitish below. Young darker on tips of fins. 



Middle Atlantic and Pacific; Mediterranean. 



Carcharinus albimarginatus. 



Carcharias nlbimarginalus Ruppell, 1835, Neuo wirb. Abyssinien, Fische, p. 64, pi. 18, f. 1. 

 Carcharias (Prionodon) albimarginatus MuLiiER & Henle, 1841, Plagios., p. 44; Dum^ril, 1865, Elasm., 

 p. 366; GtJNTH., 1870, Cat., fishes Brit, nuis., 8, p. 370. 



Positions of fins and outlines of snout resembling those of C. lamia, pectorals 

 narrower. Snout short, rounded, blunt, nostrils nearer to the mouth than to the 

 end. Teeth subtriangular, serrated, in 25-27 rows; upper slightly oblique, 

 notched on the outer margin; lower narrower in the cusp, erect, indented on the 

 outer edge; median small, unserrated. Two gill openings above the pectoral. 

 Pectorals somewhat falciform, reaching the end of the dorsal, narrowly rounded 

 on both angles. Dorsal little nearer to base of pectoral than to ventrals, hind 

 margin deeply concave, origin near the inner angle of the pectoral, hinder angle 

 produced, sharp. Second dorsal about one third of the size of the first, half its 

 base extending back above that of the anal, hind margin straight. Anal smaller 

 than second dorsal, origin below the middle of latter' s base, base ending slightly 

 behind that of the same fin, hind margin deeply indented. 



Greyish yellow, lighter below, tips and hind margins of the fins pure white. 



Red Sea. 



Carcharinus glyphis. 



Carcharias (Prionodon) glyphis Miller & Henle, 1841, Plagios., p. 40, pi. 14; Dum6ril, 1865, Elasm., 

 p. 359; GtJNTH., 1870, Cat. fishes Brit, mus., 8, p. 373.. 



Body rather stout; head depressed, broadly rounded from the gills. Snout 

 short, blunt, length about equal that of mouth or distance between the nostrils. 



