PRISTIS CLAVATA. 263 



465; GtiNTH., L870, Cat. fishes Brit, mus., 8, p. -437; EClunzinoeb, 1871, Syn. fische, 2, p. 673; Day, 

 1878, bid. fishes, p. 811; Carman, lsss, Bull. M. C. Z., 17, p. 88, pi. 23; Jord.A Evebm., 1896, Bull. 



47, U. S. nat. mus., p. GO; 1900, ibid., Atlas, pi. 8. f. 27; Axnanpalk, 100!), Mem. Ind. mils., 2, p. 7. 

 Leaqutdescie I . \< i : ; i-i; i > i : , 17'.)s, Poissons, 1, p. '-'so, pi. s, f. 1. 

 Pristis graiiiilnsii Schneider, 1801, Bloch lehth., p. 352. 

 Pristis megalodon Dumeril, 1S65, Elasm., p. 479, pi. 9, f. 4. 

 Pristis acuiiroslris Dumeril, 1805, ibid., p. 479. 

 Pristis occa Dumeril, 1865, ibid., p. 479. 

 Pristis leptodon Dumeril, 1S65, ibid., p. 4S0. 

 Pristis brerirostris Dumeril, 1865, ibid., p. 480. 



Pristis woermanni Fischer, 1884, Jahresb. Mus. Hamb. for 1883, p. 39. 

 Prislis aiiniindalci Chaudhuri, 1908, Records Ind. mus., 2, p. 391, figs.; Annandale, 1909, Mem. Ind. 



mus., 2, p. 8, pi. 5, f. 4. 



Rostrum of moderate width, less tapering than in either P. pristis or P. micro- 

 dan; rostral teeth 25 to 32, varying with age and individual, not grooved on the 

 posterior edge on young specimens, closer together forward, sometimes irregular 

 in length. Teeth on the jaws in pavement, rows 88-178 above and 84 to 17(3 

 below. Spiracles and nostrils moderately oblique. Fin angles somewhat 

 produced; outer pectoral angle blunt, margins nearly straight; origin of first 

 dorsal opposite or a little backward to that of the ventrals; second dorsal little 

 smaller, hind margin concave; angle sharp, not reaching the caudal; supra- 

 caudal slightly more produced than subcaudal,' the latter with a trace of a lobe. 

 A low keel at each side of the tail. Scales on the very young with broad rounded 

 bases short pedicels and leaf-shaped crowns, which latter are more or less sharp 

 angled posteriorly, on the greater portion of the body, but with age the crowns 

 become modified, on the fin margins about the snout and head, and appear 

 convex and smooth, button-shaped, and sessile. 



Tropical to temperate seas. 



Pristis clavata. 

 Plate 16, fig. 5-7. . 

 Pristis clamta Garman, 1906, Bull. M. C. Z., 46, p. 208. 



Body and head much depressed; tail flattened beneath, bluntly keeled on 

 each side, subtriangular in cross section. Head, from end of snout to hindmost 

 gill opening, nearly two fifths of the total length, saw about one fourth of the 

 total. The twenty-one teeth at each side of the saw are long, slender, and rounded 

 on each edge. Nostrils wide, oblique; anterior valve with a broad, rounded 

 lobe in the middle; posterior valve narrowly free behind, in two divisions, the 

 outer of which is extended as a partition into the nostril in a sort of flap below 

 the lobe of the anterior valve. Distance between the nostrils greater than their 



