352 THE PLAGIOSTOMIA. 



nearly straight, undulation slight; outer angle blunt, hinder margin broadly 

 convex, hind angles broadly rounded. Interorbital space concave, width three 

 elevenths of the length of the snout. Mouth slightly curved, width about 

 five eighths of the rostral length. Teeth small, in about forty-five rows on the 

 upper jaw. Ventrals deeply notched. Dorsals separated from one another 

 more than the length of the first dorsal, length of tail behind the second dorsal 

 one half more. Back with a row of eight or ten small tubercles on each orbital 

 ridge, a single tubercle behind the occiput, and five irregular rows of small 

 tubercles directed backward on the tail; lower surface with small spines below 

 the head; elsewhere the body is smooth. 



Brownish, back and fins closely sprinkled with dots of darker brown. 



Disk to ends of pectorals 84, tail 7, and width of disk 10 inches in the type, 

 a female, from Takao, Formosa. 



Raia andamanica. 



Rata sp. nov. Annandale, 1909, Mem. Ind. mus., 2, p. 3. 



Raia andamanica Lloyd, 1909, Mom. Ind. mus., 2, p. 140; 111. zool. Investigator. Fishes, pi. 46, f. 2. 



Disk little broader than long; anterior margins sinuous, meeting in an 

 angle of 90°; outer and hinder angles rounded, latter broader; hind borders 

 slightly convex. Body two thirds as long as the tail, from the vent. Rostral 

 cartilage moderate, ridges slightly convergent, but not meeting. Greatest 

 diameter of the eye little more than the interorbital width, one fourth the length 

 of the snout. Mouth little curved, width one third of the length of the snout. 

 Teeth in Is rows, each with a low pointed cusp, if not worn away. Dorsals near 

 the end of the tail, separated from one another by a short space. Back rough 

 with small spines, which are larger opposite the eyes on the pectorals and above 

 the sides of the tail. An irregular group or band of small tubercles above the 

 rostral cartilage, a row of about eight around each orbital ridge, and a vertebral 

 series, from the back of the head to the dorsal fin, broken above the abdomen. 

 Lower surfaces nearly smooth. 



Type a male of 21 cm. 



Andaman Sea, at 279 fathoms. 



