PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 251 
Inches. 
arena BuOIMUOLeT OL OPI. 2. = <2 gos a 5o- ce eons wee ece ened ne mnen cece ee. 538 
Mensioonloweraw. to stralone line@-: -22. 2052. ceo se coeace ceccee tee ce eee 1.42 
Momenmonupyer jaw, il Steatent Wn6-..-5-.- 25-6 .----- 2 6cc eden cece cel cece. 1.15 
Tap omsnout to insertion of pectoral; ‘about. 2.. 2.2... 26. beo2c.2. teen ole 3.00 
_ Tip of snout to origin of dorsal, along axis of fish.......... 2... ..22-.-- scene. 3.62 
Tip of snout to origin of dorsal, along dorsal profile..............----....---- 4.03 
Tip of snout to origin of anal, along axis of fish...... ...--.------seeces co nnee 6.45 
Tip of lower jaw to insertion of ventrals, along abdominal profile..........-.. 3.32 
MPEUMMIBE CHORDS AGO). oceans an csi ed cas ccn seb ebaeccsses ede es SUL TS! .90 
aE ee eee SE RE CLOTUNS toe os ee als cco: See oS Lele aeek Jen. ccemeub beds Weed 6 2.40 
arena ema HN NCS: an shih bya oeee) cc tiroctisliod Das Sag ed Qencuteemas de eco hace 1.50 
ienethot base of Ist. dorsal to XIIth spine... .-< 10.2.2 --220- (con cenc--nace 2,08 
Remo lonzest (4h). dorsal’ spine. ......-- «ncn = sacs ec2- maecee cuca -4< 1.25 
esas clin BASCLOL 2 COIR. oe 52 somes occie <2 ssee wenn ss bas eccees cane cose 2.60 
EetctnOomodeosuicad) TAY OL COLSAL. 255... = Sae--Ssec aoeens cates edekee totean 1.44 
Pere ARN Or AU AIRES ose aes SUS Sse sh. tescees .k ets DI ee 1.62 
Mermhior lonsesh (ist )vay of anall::.-. ps2. vad o ewe tess 2 oslan- Lat oes nese 1.38 
Fin formula.—B. 7; D. XII+ 11, 45; A. 2; P.18; V. 3; C. lat. 
line cirea 128-134. 
DESCRIPTION OF A NEW SPECIES OF RAY, os RHENA, FROM 
THE COAST OF CALIFORNIA 
By DAVID S. JORDAN and CHARLES H. GILBERT. 
Raia rhina, sp. noy. 
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 pectoral 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. Nasal ridges separated for more than half their length. 
Supraocular ridges slightly elevated. Eyes larger and much longer than 
spiracles. Ventral fins deeply «marginate. 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 three long sharp 
spines between the dorsal fins. 
_Roughnesses on the skin above rather large, sharp-pointed, and evi- 
dently stellate. Those on the snout especially conspicuously stellate 
and larger than the others. These prickles are everywhere present on the 
