348 THE PLAGIOSTOMIA. 



Raia stellulata. 



Raia stellulata Joudan & Gilbert, 1880, Proc. U. S. nat. mus., 3, p. 133; 1882, Bull. 16, U. S. nat. mus., 

 p. 45; Gilbert, 1895, Rcpt. U. S. fish comm. for 1893, p. 396; Jord. & Everm., 1896, Bull. 47, U. 

 S. nat. mus., p. 75; 1900, ibid., Atlas, pi. 11, f. 32. 



Disk rhomboid, broader than long, snout slightly produced, blunted, front 

 angle more than 90°, outer angles little less than the front angle, anterior margins 

 undulated, hinder convex. Length of snout little more than twice the width 

 of the interorbital space. Mouth arched; teeth in about 40 rows. Width of 

 disk equal to length of body and tail behind the shoulder girdle. Body rough- 

 ened by small stellate spines that are stronger above the head and the snout, 

 near the pectoral margins, along the middle of the body and at the sides of the 

 tail. Stout spines on the middle of each shoulder and above the eyes. A me- 

 dian row of small tubercles behind the head on back and tail. Lower surfaces 

 smooth, except below the snout. Males have the bases of the pectorals almost 

 smooth and there are tenacula near the outer angles; this sex matures at a 

 length of thirty inches or less. 



Brownish with scattered ill-defined dusky spots, variegated with light and 

 dark; an ocellate spot, surrounded by a pale ring inside of a black one, on each 

 pectoral; numerous spots of black, some ocellate, scattered over the body; 

 head with black cross bars. 



As figured by Jordan and Evermann the disk is subquadrate, with the 

 front angle about 90°, and the spots are the two large ones on the bases of the 

 pectorals. 



Off the coasts of California and northward. 



Raia rhina. ..^ 



Raia rhina Jordan & Gilbert, 1880, Proc. U. S. nat. mus., 3, p. 251, 1882, Bull. 16, U. S. nat. mus., 

 p. 45; Jord. & Everm., 1896, Bull. 47, U. S. nat. mus., p. 72. 



Shape resembling that of R. stahuliforis, Plate 22, fig. 2. Disk little broader 

 than long, snout elongate, about one third of the length of the disk or four times 

 the interorbital width, acuminate, front angle less than 90°, anterior margins 

 undulate, deeply concave, outer angles about 90°, blunted, hinder margins and 

 angles broadly rounded. Mouth arched, width nearly two fifths of the distance 

 from the end of the snout; teeth small, in 42 rows (42-48). Eyes large, in 

 length equal to the width between the orbits. Young smooth, with a band of 

 minute spines along the lower front margins and under the snout, with a strong 

 hooked tubercle in front of and one behind each orbit, with a large median 

 tubercle in front of the shoulder girdle, and with an irregular series behind the 



