1-72 Annals of the Carnegie Museum. 



in the snout; the interspiracle width 2 to 2.2. A line drawn between 

 the outer angles of the body crosses the median line of the back twice 

 the length of the snout with the addition of from one to one and a 

 half of the long diameter of the eye from the tip of the snout. The 

 eye, the outer ventral lobe, and the rostral cartilages do not differ 

 materially from those of Raja rhina of equal size, as shown by the 

 appended tables. The nearest point of the edge of the disk from the 

 anterior edge of the eye is from one-half to 

 one diameter of the eye greater than the in- 

 terspiracle width. The anterior margin of 

 the disk is concave towards the snout and to- 

 wards the pectoral angle with a convex median 

 portion. The median portion touches, or 

 comes within a diameter of the pupil of touch- 

 ing, a straight line drawn from the snout to 

 Fig. 6. Raja inornata. . . 1 1 ry-, 



_ , . . , ^ the outer anterior pectoral edge. 1 he outer 



9 273^ in. long. To t- a 



show outline of front of ^"g'e of the pectoral is always well rounded, 

 disk. Small prickles are sparsely' scattered over 



the outer edges of the pectorals, and along the 

 entire median line of the back. Larger ones are on the interorbital 

 space and snout. The enlarged spines around the eye scarcely diffc 

 from those of Raja rhina. About a dozen large spines are irregi 

 larly placed in a patch between the branchial cavities, and the entire 

 back of the tail is covered with about five irregular rows of spines. 



A couple of small specimens, fifteen inches in length, a male and 

 female, differ as follows: the width of the interorbital space is from 

 3 to 3.4 in the snout; the interspiracle width 1.83 to 2.33. The length 

 of the spiracle from its posterior edge to the eye-ball is a third of the 

 eye-ball. There are no prickles, except a few on the interorbital 

 space and snout. About five spines occur on the orbital marg^ 

 two or three between the branchial cavities, and about three r- 

 on the back of the tail. 



The color of this species is not very different from that of F 

 rhina; it is a clearer, warmer brown, and the pectoral spot is, .^ 

 evident. 



This species (except the very young) may be at once known froi 

 Raja rhina, which it most resembles, by the much less concave ar 

 terior outline of the disk, the shorter snout, and the patch of enlarge* 

 spines on the back between the branchial cavities. The young are 



