144 THE PLAGIOSTOMIA. 



Greyish brown; white below. 



Off eastern coasts of South America. 



Carcharinus munsing. 



Carcharias (Prionodon) munsing Bleekeh, 1849, Verh. Bat. gen., 22, p. 16; 1852, Verh. Bat. gen., 

 24, Plagios, p. 32, pi. 1, f. 2; Dumeril, 1865, Elasin., p. 354; Gunth., 1870, Cat. fishes Brit, mus., 8, 

 p. 365. 



Head pointed, one fifth or more of the total length, broader than high. 

 Snout moderate, depressed, broadly rounded from behind the orbits, length less 

 than the width of the mouth, nostrils little behind the mid length. Nasal valve 

 with a sharp pointed lobe. Diameter of orbit about one sixth of the preoral 

 length. Mouth large, much arched, length about two thirds of the width, a 

 short labial groove at the angle. Upper teeth serrated, rather broad, triangular, 

 nearly erect; lower erect, not serrated, cusp narrow, lanceolate, base broad. 

 Pectorals longer than broad, angles rounded. First dorsal nearer to ventrals 

 than to the bases of the pectorals, more than twice its base from the second dorsal. 

 Second dorsal smaller than the first, little larger than the anal. Anal origin 

 opposite that of the second dorsal. Caudal one fourth or more of the total 

 length. 



Brownish, lighter below, fins unspotted. 



Java. 



Carcharinus maou. 



Squalus {Carcharias) maou Lesson, 1830, Voy. Coquille, Poiss., p. 91, pi. 1; Dumeril, 1865, Elasm., 



p. 379. 

 Carcharias (Prionodon) maou Muller & Henle, 1841, Plagios., p. 44. 



Body rather stout forward, head short. Snout short, somewhat depressed, 

 bluntly rounded, nostrils near the mid length. Teeth triangular, smooth. 

 Pectorals much longer than broad, angles rounded, hind margin concave. First 

 dorsal nearer to the pectorals than to the ventrals, upper angle rounded, hinder 

 produced, hind margin deeply indented. Second dorsal small, origin above end 

 of anal. Anal smaller than second dorsal, and farther forward. Ventrals nearly 

 below the middle of the space between the dorsals. Caudal elongate, subcaudal 

 lobe prominent. 



Vivid bluish green; dorsals, pectorals, ventrals, anal, and subcaudal lobe 

 whitish near their outer angles; lower surfaces white. 



Muller and Henle place this species in their subgenus Prionodon, which 

 probably is the better place for it, the statement of the original describer, that 

 the teeth are smooth, notwithstanding. 



Society Islands. 



