^0.1324. ELASMOBRANCHIATE FISHES— JORDAN AMD FOWLER. 639 



lower part of snout near its middle; teeth small, close-set, each with 

 I sharp cusp on a l)road base; nostrils inferior, with conspicuous valves; 

 ?3^es large, no nictitating- membrane; spiracles large; pectorals rather 

 arge, distant from head ; first dorsal in front of ventrals; second dorsal 

 arge; no dorsal spine; no anal tin; gill-openings moderate, all before 

 pectoral; lower caudal lobe narrow. Species few; found from Japan 

 to Australia, resembling the sawfishes {Pristididse) of the New World, 

 but smaller in size and ditferent in details of structure. 



31. PRISTIOPHORUS Muller and Henle. 



PrhtiophormMvu.vMawl Henle, Plagiostonu-n, 18o8, p. 07 {cirratus). 



; Characters of the genus included above. 

 {npiffTic;, saw; (j>opeoj. to bear.) 



33. PRISTIOPHORUS JAPONICUS Giinther. 



XOKOGIRIZAME (SAW SHARK); HOKABUKA (HALBERD SHARK); 

 DAIGIRIZAME (SAW SHARK). 



Fridiopltorus cirratii.'^ScJiLEGm., Fauna Japonica, Poiss., 1847, p. 105, pi. cxxxvii; 

 Nagasaki.— Richardson, Ich. China, 1846, p. 317.— Bleekek, Nieuwe Nalez- 

 ing, Ichth. Jap., 1854, p. 128; Nagasaki (not of Latham, 1794). 



PristinpJinrns japonicus Gunther, Cat. Fish, VIII, 1870, p. 43; .Japan. —Ishi- 

 KAWA, Prel. Cat., 1897, p. 61; Sagami Bay. 



Head a trifle less than 3 in bod}-; tip of snout to eye 3i in head; 

 greatest width of head 4| in its length; interorbital space 8f in head; 

 spiracle 2| in interorbital space; eye If; pectoral 3 in head; height of 

 first dorsal 4i; caudal 2^. 



Body elongate, moderately thick. Head small, except for elongate 

 depressed snout, or saw, greatly depressed and flattened, both above 

 and below; saw rather broad, thin, becoming narrow at tip. truncately 

 rounded; in each margin of saw a series of sharp teeth of uneven size, 

 the larger with one, two, or three smaller between; on lower marginal 

 surface of snout a single series of small, backwardly hooked teeth, 

 each at some distance apart; in lower surface of saw, near edges, 

 a pair of flattened tentacles about equal in length to width of head in 

 front of eyes; teeth on edge of saw become smaller posteriorly and 

 extend halfway in space between e,ye and first gill-opening; mouth 

 broadly ol)tuse l)elow posterior part and behind eye; teeth small, 

 pointed, in many rows in jaws; no.strils area trifle closer together than 

 corners of mouth, nearer latter than tentacles, or about in last third 

 of space between; interorliital space more or less flattened, though 

 there are slight supraocular ridges; eye elongate, lateral, placed less 

 than its diameter posterior to no.strils. Spiracles very large, half the 

 eye, placed directly behind its posterior margin. Gill-openings mod- 

 erate, in front of base of pectoral. 



Entire bodv finely roughened. 



