268 



BULLETIN OF THE BUREAU OF FISHERIES. 



from which three young ones, 14.5, 15, and 15.3 cm. in length were obtained. The description of teeth 

 and denticles is based on this specimen. 



Fig. 20. — Denticles, Sijualus acanthias, 84.5 cm. long, from Beaufort, N. C. 



Family RHINID^. The angel fishes. 

 Genus RHINA Klein. 

 20. Rhina dumeril (Le Sueur). Nui-sefish; Jakie. 



Souctina squaiina. Smith, 1907, p. 38; Gudger, 19133, p. 10; Coles, 1914, p. 92. 



Coles states that this species is a regular visitor at Cape Lookout, arriving the latter part of March 

 and leaving about the ist of May. As no examples of this species are at present available it is impos- 

 sible to describe the teeth and armature of the skin. 



Family PRISTID^. The sawfishes. 

 Genus PRISTIS Klein in Schauplatz. 

 21. Pristis pectinatus Latham. Sawfish. 

 Pristis antiouorum. Yarrow, 1877, p. 217. 



Pristis pectinatus, Jenkins, 1885, p, 11; Jordan, 1886, p. 26: Jenkins, 1887, p, 84; 

 Jordan and Evermann, 1898, pt. m, p. 2749. id., 1900. pi. vra. fig. 27; Wilson, 

 1900, p. 355; Smith, 1907, p. 39, fig. 7: Gudger, 1912, p. 144; Coles. 1914, p. 92. 



Teeth. — Teeth in about — rows (88 to 178 rows above and 84 



to 176 below)," small, flattened, in pavement, arranged in quincunx; 

 anterior margins rounded, posterior margins truncate; posterior basal 

 portion of upper teeth with a short mesial projection and a slight 

 indentation on either side of it; in the lower teeth the exposed pro- 

 jecting base is more pointed, margin on either side straighter. 



Denticles. — Denticles on rostrum circular, buttonlike, close-set. 

 sessile; on the head and trunk they vary from ovate to circular; 

 those under first dorsal ovate; pedicel short. Description of teeth 

 and denticles based on a specimen from Florida 71.7 cm. (28^ 

 inches) long in the United States National Museum. 



"Scales on tlie very yoimg with broad, rotinded 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."" 



<i Gannan. The Plagiostomia, p. 363. 



Fig. 21. — Teeth, upper and lower jaws, 

 Pristis pectinatus, 71.7 cm. long, from 

 Florida. (Same specimen as fig. 22.) 



