FISHES OF SINALOA. 39I 



A line drawn through lateral angles would bisect a line 

 from snout to tip of tail. Interorbital i/^ in snout; eye 

 iJE^ in spiracles; mouth 7 in disk, i^ in snout; tail 

 straight and slender, with a very slight fold on dorsal side. 



Ground color light olive brown, thickly set with sharp 

 cut black points; conspicuous grey or white spots, half 

 as large as iris, scattered over the body, around which 

 the black spots form rings; brighter yellowish spots and 

 half spots around anterior edge of disk ; tail mottled above 

 with darker; lower parts chiefly light orange red or rust 

 colored in life. 



All the markings are very distinct and clear cut, the red- 

 dish of the belly conspicuous. 



One specimen, 12 inches long. Type No. 1587, L. S. 

 Jr. Univ. Mus. 



20. ^tobatus narinari (Euphrasen). Gavilan. 



Rather common in the harbor of Mazatlan, vv^here it 

 was also taken by Gilbert; a beautifully colored species 

 reaching a large size. 



Length of disk i/^ in width; proximal half of anterior 

 margin of pectoral fins straight, distal half convex; pos- 

 terior margin concave, the end of each ray forming a 

 small scallop ; lateral angle sharp. 



Snout forming an angle, from its tip to division of nasal- 

 lobes, 1)4, times breadth of head; width of snout i| times 

 distance from its tip to the division of nasal-lobes; nasal- 

 lobes projecting back over the mouth; width of mouth 

 i}4 its distance to tip of snout; numerous blunt buccal 

 papilla around upper dental plate and on ridge between 

 nostrils; interorbital 4^ in disk; eyes smaller than spir- 

 acles, which are as long as base of dorsal. Ventrals well 

 rounded, 3^ in length of disk; tail ^j4 times disk. First 

 caudal spine equals base of dorsal, which is half second 

 spine. 



