PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 251 



Inches. 



Lougitu linal diameter of orljit .58 



Length of lower jaw, in straight line 1.42 



Length of upper jaw, in straight line 1.1.") 



Tip of snout to insertion of pectoral, about ;{.00 



Tip of snout to origin of dorsal, along axis of fish 3.62 



Tip of snout to origin of dorsal, along dorsal profile 4.03 



Tip of snout to origin of anal, along axis of lish (5.45 



Tip of lower jaw to insertion of ventrals, along abdominal profile 3.,32 



Width of pectoral base .90 



Length of pectorals 2.40 



Length of ventrals 1.50 



Length of base of 1st doi'sal to Xllth spine 2.08 



Height of longest (4th) dorsal spine 1.25 



Length of base of 2d dorsal 2.80 



Height of longest (od) ray of dorsal 1.44 



Length of base of anal 1.62 



Height of longest (1st) ray of anal 1.38 



Fin formula.— B. 7; D. XII + 11, yV; ^- A) P- 18; V. i; C. lat. 

 line circa 128-134. 



»£»>iCRIPTIOIV ©F A NE^V SPECIES OF KAY, RAIA RIIIIVA, FROm 

 THE COAST OF CALIFORIVIA. 



By DAVID S. JORDAN and CHARL.ES H. OILBERT. 



Raia rhina, sp. uov. 



Disk rather broader than long, the snout very sharp and long-acumi- 

 nate. Outer angle of pectoral sharp ; posterior edge of pectoral nearly 

 straight. Region from i)ectoral angle to snout slightly convex, then 

 almost uniformly and strongly concave to near the tip of the snout, which 

 tapers to a sharp point. A straight line from the snout to the tip of the 

 pectoral passes far from the edge of the disk. Length of snout nearly 

 four times the interorbital width. 



Interorbital space quite narrow, very little concave, somewhat depressed 

 in the middle, i^^asal ridges separated for more than half theu* length. 

 Supraocular ridges slightly elevated. Eyes larger and much longer than 

 spiracles. Ventral fins deeply emarginate. Caudal fin reduced to a 

 small fold. Dorsal fins moderate, rather close together, the interspace 

 less than the base of the fin. 



Female with the spines on the body moderately strong, arranged as 

 follows : 



Five or six rather strong spines above the eyes. Two in front of the 

 center of the back. None along the middle line of the back until oppo- 

 site the posterior end of the ventrals^ where a median series begins on the 

 tail. A lateral caudal series on each side, and two or thi%e long shaVp 

 spines between the dorsal fins. 



Roughnesses on the skin above rather large, shari)-pbinted, and evi- 

 dently stellate. Those on the snout especially conspicuously stellate 

 and larger than the otheis. These prickles are everywhere present on the 



