2750 Bulletin //, United States National Museum. 



Page 62. After Rhinobatus lentiyiiiosus, add: 



81(a). RHIXOBATUS STELLIO, Jordan & Rutter. 



Disk triangular, its greatest width a little less than | the distance from 

 snout to dorsal, and equal to distance from snout to a line connecting 

 points of greatest width. Sides of disk straight, tip of snout rounded, pos- 

 terior point of pectoral more broadly rounded than snout. Length of snout 

 equal to, or a little less than, greatest width of disk, equal to dis- 

 tance between outer points of anterior gill openings; interorbital width 

 4 to 4 in snout, a little less than length of eye and spiracle, but about 

 equal to length of nostril; interuasal width equal to orbit; spiracle 

 length of eye, a prominent curved papilla and a slight ridge in its poste- 

 rior side. Anterior nasal valve with a long slender flap extending across 

 the nostril; 3 broad flaps on posterior side. Rostral ridges separate for 

 their entire length, width between them at base equal to width of spiracle. 

 Mouth nearly straight, its width 2f in its distance from snout and equal 

 to distance between inner folds on posterior side of spiracle. Eye 4 to 

 5J in snout. Width of body at axil of pectorals 1 in snout. Dorsal fins 

 about equal in size and shape, the distance between them 2-J- times base of 

 first, the distance between the origins of the two fins equal to snout and 

 about equal to distance from axil of pectoral to origin of first dorsal. 

 Sides of tail with a conspicuous fold. Skin above with a fine uniform 

 shagreen, nearly smooth below except near margins of the disk. A series 

 of very small spines above eye and spiracle, 1 or 2 minute spines on 

 shoulder girdle ; the largest spines of body situated along median line of 

 back, extending beyond first dorsal ; no spine on snout, but in 2 of the 3 

 specimens there is a pair of minute spineless plates near its tip. Color 

 dusky brown above, about 7 faint dusky bars on the side of the tail behind 

 first dorsal; uniform pale below; large translucent areas on each side of 

 the snout; back with numerous small light spots, much smaller than 

 pupil, arranged symmetrically but not in the same pattern on the 3 type 

 specimens; 2 or 3 pairs between eyes, a few pairs behind eyes near median 

 line, some below eye, where they approach nearest the margin of disk, 

 usually 1 or 2 on median line, sometimes 2 are confluent, about 40 or 45 

 pairs in all; axil of pectoral in 1 specimen with a dusky blotch on upper 

 side. This species is most nearly related to Rhinobatus glaucosfigma of the 

 Pacific coast, differing in Laving a narrow interorbital, narrower body 

 behind disk, and in the very different color. The description is based on 

 3 specimens, each about 20 inches. Jamaica, (slvllio, the starry one. ) 



Rhinobatus sttllio, JORDAN & RUTTER, Proc. Ac. Nat. Sci. 1897, 91, Kingston, Jamaica. 

 (Type, No. 11851, L. S. Jr. Univ. Mus. Coll. Joseph Seed Roberts.) 



Page 66. To the synonymy of Raja add : Cephaleuthei-us, Rafinesque, 

 Indice, 61, 1810 (macttlatus). 



The genus Cephaleutherus. Rafinesque, was, as Dr. Gill has shown (in 

 lit.), probably based on a monstrous example of the genus Raja, in which 

 the pectoral fins were not developed on the snout. It should be trans- 

 ferred to the synonymy of Raja, leaving Myliobatis as the generic name of 

 the Eagle Rays. 



