336 



THE PLAGIOSTOMIA. 



with broad heart-shaped bases stand as follows : — a row on each orbital ridge, 

 a single one at each side of the occiput, four on each shoulder, one in front of 

 each four, and a median series from the back of the head to the dorsal accom- 

 panied by one lateral row from above the abdomen and by two lateral rows from 

 the base of the tail. Lower surfaces smooth. 



Back a warm brown with irregular transverse series of darker blotches 

 interspersed with smaller spots of white. Tail with transverse blotches of 

 darker; lower surface white. 



Total length of specimen described 9.70, snout to pores 3.38, greatest 

 width 4.5 inches. 



Taken in Lat. 31° 57' N.; Long. 78° 18' 35" W., in 333 fathoms, by the 

 U. S. C. S. S. Blake. 



Raia ornata. 



Plate 18, fig. 2. 



Raia ornata Garman, 1881, Bull. M. C. Z., 8, p. 235; Jordan «fe Gilbert, 1882, Bull. 16, U. S. nat. mus., 

 p. 877; GooDE & Bean, 1883, Bull. M. C. Z., 10, p. 225; 1896, Mem. M. C. Z., 22, p. 26 (non pi. 8, 

 f. 24); JoRD. & EvERM., 1896, Bull. 47, U. S. nat.. mus., p. 70. 



Disk to ends of pectorals little broader than long, very blunt angled in 

 front, convex opposite the eyes, rounded on outer and hinder margins and angles. 

 Mouth waved, width two thirds of the distance from end of snout. Teeth 

 small, in 44 rows (juv.). Eyes large, distance apart about half that from end of 

 snout. A vertebral series of tubercles on back and tail, one lateral series at 

 each side of the median row on the back and two laterals at each side of it on the 

 tail, a series on each orbital ridge, a spine on the forehead between the eyes, a 

 group of several above the end of the rostral cartilage, a single spine on each 

 shoulder, a group near each ventral on the pectoral and another on the same fin 

 near its forward extremity include the larger spines, but in addition the entire 

 upper surface is rough with very small ones. Lower surfaces smooth. The 

 specimen described has a total length of 8, snout to pores 32, and greatest width 

 4 inches. 



Light brownish freckled with lighter and marked with symmetrically 

 placed rosettes or groups of darker spots, usually six around a central one. 



Off the coasts of Florida, in about 140 fathoms; U. S. C. S. S. Blake. 



Rata ackleyi. 

 Plate 19. 



Raia ackleyi Garman, 1881, Bull. M. C. Z., 8, p. 234; Goode & Bean, 1896, Mem. M. C. Z., 22, p. 25 

 (non pi. 7, f. 2); Jord. & Everm., 1896, Bull. 47, U. S. nat. mas., p. 70. 



