166 



Annals of the Carnegie Museum. 



Color dark sienna-brown with irregular black blotches sometimes 

 present. A spot at base of pectoral in the form of an irregular ring 

 always present in the young, and often present in the adult as a ring, 

 or as a diffused blotch, but never larger than the width of the interor- 

 bital space. The very young have dark points scattered sparsely 

 over the body. 



Specimens from twelve to twenty inches in length difYer from these as 

 follows: the interorbital width is contained from 3.5 to 4 in the snout; 



Fig. 2. Raja yhina. A female specimen, 32 in. long, from San Francisco. 



the interspiracle width from 2.5 to 2.75. The length of the spiracle 

 from its posterior edge to the iris is contained 1.25 in the iris, or to 

 the posterior edge of the eye-ball 2.4 in the eye-ball. The outer ventral 

 lobe from the notch in the posterior edge of the fin is greater than the 



