2752 Bulletin 4.7, United States National Museum. 



Page 78. After Xarctne brasiliensis insert: 



112(a). NABC1XE ENTEMEDOR, Jordan <fc Starks. 



(ENTEMEDOR.) 



Snout 3f in length of disk; preocular part of snout equals preoral; 

 interocular space in snout 1| ; width of mouth 2. Eye much smaller 

 than spiracle; spiracles edged with small tubercles. Length of disk 

 equal to its width; disk equal to length of tail, without caudal fin; tail 

 with a loose fold of skin on each side. First and second dorsals equal, 

 rounded hehind; ventrals large, ending midway between posterior edge 

 of disk and caudal fin. Color pale olive brown, a little clouded with 

 darker; second dorsal edged with pale; dots on head dusky. Two speci- 

 mens taken in the estuary at Mazatlan, and a third procured by Mr. James 

 A. Richardson in the-harbor of La Paz. Specimens had also been obtained 

 by Dr. Gilbert, at Panama, in 1883, but having been destroyed by fire, the 

 species has remained undescribed until recently. Length of largest speci- 

 men 20 inches. (The Spanish name Entemedor seems to be equivalent to 

 Intimidator. ) 



Nartine entemedor, JORDAN & STARKS, Fishes of Sinaloa, 386, 1895, Mazatlan, Mexico. 

 ( Type, No. 1699, L. S. Jr. Univ. Mus. Coll. Hopkins Exped. to Sinaloa. ) 



Page 81. After Urolophus nebulosus add: 



115(a). 1JR0LOPHUS UMBBIFER, Jordan & Starka. 



Disk round, not wider than long, its length greater than tail; snout 

 pointed, not exserted. Snout from eye 4 in disk ; eyes equal to spiracles ; 

 month 2 in distance to tip of snout; caudal spine inserted in front of mid- 

 dle of tail; skin perfectly smooth. Color brown above, with blackish 

 cross shades or bars, radiating from the shoulder; a dark band behind 

 eyes, and 1 from eyes; caudal fin dark. Mazatlan. One adult female 

 specimen, the uterus containing 4 young. Occasionally taken with 

 Urolophus mundu8, but much less common. This is probably not identical 

 with Garman's Urolophus nebnlostis, being perfectly smooth and different 

 in color, (umbra, shade; fcro, I bear.) 



Urolophus umbrifer, JORDAN & STARKS, Fishes of Sinaloa, 389, 1895, Mazatlan, Mexico. 

 (Coll. Hopkins Exped. to Sinaloa.) 



Page 82. Urolophits asterias, Jordan & Gilbert, is identical with Urolo- 

 phus mundus (Gill), as is shown by specimens recently collected by D.. 

 Gilbert at Panama. 



120(a). UROLOPHUS ROGERSI, Jordan & Starks. 



Disk broader than long by a distance 2| times the interorbital width ; 

 anterior margins of disk nearly straight, the tip of snout projecting; snout 

 from eye 3| in length of disk; eye little smaller than spiracles; width of 

 mouth 2| times in preoral part of snout; caudal spine inserted in front 

 of middle of tail; skin with minute prickles pn margin of pectorals and 

 on middle of back, leaving smooth areas near middle of pectorals and' 



