FISHES OF THE PHILIPPINE ISLANDS AND ADJACENT SEAS 173 



with Squalus lamia as apparently the earliest available name. 

 Thougli Garman accepted Squalus {Carcharias) maou Lesson, its im- 

 perfect description and crude figure, likely in part at least inaccu- 

 rate, suggest to me it may more probably have been intended for the 

 present species. 



Oarcharias {Prionodon) amhoineTisis, described with second dorsal 

 opposite anal, smaller; caudal slender, acute; pectoral acute; ventral 

 partly quadrate, little emarginate. 



Above gray-blue, with numerous transverse diffuse deep bands, 

 below whitish. Fins gray-blue or clouded bluish. Length, 2,860 

 mm. (Bleeker.) 



Carcharias (Prionodon) zarnbezensis Peters seems close to, if not 

 the same as the present species. It is figured with the first dorsal 

 origin clearly behind the pectoral base. 



The imperfectly noticed nominal Carcharias {Prionodon) fasciatus 

 Bleeker is likely an adult variant of the present species, with which 

 Bleeker compares it. 



Depth 8^ in total length, body elongate, compressed; head 6, ob- 

 tuse, broader than high. Snout obtuse, short; short preoral; mouth 

 width twice preoral, broader than long, semilunar; teeth in jaws tri- 

 angular, oblique, broad, all serrated, outer basal edge serrated. 



First dorsal nearer pectoral than Miiller and Henle is incompletely, 

 if not unsatisfactorily noticed by these authors. Though Garman 

 placed it near Eulamia flumhea (Nardo), from which he thinks it 

 differs in longer pectorals, with sharp outer and rounded hinder 

 angles and with their hind margins deeply indented, besides its broad, 

 triangular subequal teeth. Even Miiller and Henle's figures of the 

 dentition do not leave it clear to me that such may not be individual 

 variation. I suspect Carchari.as {Prionodon) siamensis Steindachner 

 to be the present species. The following is condensed from the 

 original account : 



Snout broad, obtusely rounded. Eye very small. Preoral length 

 more than li/^ times mouth width. Deep crescentic groove near 

 mouth angle; lip without fold. Jaw teeth as in Carcharias fleuro- 

 taenia Bleeker ; upper regular, triangular, even isosceles, edges clearly 

 serrate, in 29 rows; lower very slender, pointed, edges very obscurely 

 serrated, on wide entire base, rows 29. Inner nasal angle more than 

 twice nearer snout end than front mouth edge. Depth of first gill 

 opening equals half of last, which I/3 snout length. 



Scales small, with 3 keels, each keel ending in point behind. 



First dorsal nearer pectoral than ventral base, base length 1% in 

 head measured to last gill opening, upper fin angle blunt with rounded 

 tip, hind upper fin edge very weakly concave, fin ends in point 

 behind. Second dorsal not clearly better developed than anal of 



