RAIA POWELLI. 353 



Raia philipi. 



Raia philipi Lloyd, 1906, Ann. mag. nat. hist., ser. 7, 18, p. 306; 1907, Rec. Indian mus., 1, p. 5; 1909, 

 111. zool. Investigator, Fishes, pi. 40, 41, f. 1. 



Disk including the ventrals as long as wide, anterior margins sinuous, 

 front angle about 85°, snout slightly produced, outer angles greater than 90°, 

 blunted, hinder angles broadly rounded, hind margins in greater part slightly 

 convex. Interorbital width more than three times in the snout length. Spiracles 

 as large as the eyes. Back roughened by spinules above the end of the snout 

 and the pectoral margins opposite the gills. Orbital ridge with four spines in 

 front and three behind. A median series of five spines behind the head. Male 

 with tenacula. Top of tail with three somewhat irregular series of large spines, 

 sides of tail rough with small ones. Second dorsal distant its length from the 

 first. Tail as long as the body to the vent, slender, produced behind the dorsals. 



Back brown, with a dark ocellus surrounded by a paler ring on the base of 

 each pectoral. Lower surface of disk white, of tail with dark mottlings. 



Type a nearly mature male about 14 inches (36 cm.) in length, in greatest 

 width about 9 (23 cm.), from the Gulf of Aden, in 130 fathoms. 



Raia powelli. 



Rata powelli Alcock, 1898, Ann. mag. nat. hist., ser. 7, 2, p. 145; 1899, 111. zool. Investigator, pi. 26, f. 

 4; Cat. deep-sea fishes Indian mus., p. 20. 



Disk rhomboid, excluding the ventrals nearly one half of the total length 

 including the ventrals about equal the greatest width; each angle little greater 

 than 90°, rounded; snout narrowly produced beyond the angle of anterior 

 margins, length about two sevenths of the width of the disk; anterior margins 

 shghtly waved. Length of orbit hardly equal width of interorbital space. 

 Mouth straight; teeth, in females, obtusely pointed or obscurely tricuspid, in 

 about 55 rows. Disk smooth on both surfaces, excepting small spines near the 

 edge of the snout, along the edges of the anterior halves of the pectorals, the top 

 of the tail, two or three larger spines anteriorly on the orbital ridge, one behind 

 the orbit, three in the middle line of the nape from the shoulder girdle, and two 

 or three series from above the abdomen backward to the second dorsal. Dorsals 

 separated by the length of a fin, tail produced behind the second dorsal. The 

 outer angles of the pectorals appear to be about opposite the shoulder girdle. 



Warm brown with a large ocellus of light color surrounded by a dark ring 

 included in a light one on the base of each pectoral; lower surface dingy white. 



Type a female of 12| inches from the Gulf of Martaban in G7 fathoms. 



