Jordan and Evcrmann. -Fishes of North America. 



2753 



over l.rauchial arches; 16 to 20 large spinules along media^ line of back 

 and tail. Color plain brown; caudal fin darker, edged with white. 

 This species difters from Vrolo^u.^ a.i.rla. in having a wider disk more 

 acnte snont, mnch smaller prickles, and fewer spinules on back ami tail. 

 Mlzat L Three specimens obtained in the Astillero, the longest 18 inches 

 ^rfre ienTtU. (This species is named for Dr. Geoij^e Warr- Koger. a 

 scholarly physician, native of Vermont, but long resident in Mazatlan.) 



VrolovUu. royer.i, J0R0.N S. Sta.ks, Fishes ';f «'«"'-l,^««' ^«^„^' ^X,"^' ''"^^°- 

 (Type, No. 1700, L. S. Jr. Univ. Mas. Coll. Hopkins Exped. to Smaloa.) 



Page 88. In the key at top of page for Rhinoptei-in(v read MnUohatintv. 

 132. AETOBATIS LATICEPS (Gill). 



This species is probably not different from A. ''f"''^;,^"^^";^^ 1;^^ 

 omitted. We find no differences between specimens Iroin Mazatlan and 

 the West Indies. The following description isbased upon Mazatlan speci- 



mens : 



Length of disc If in width; proximal i of anterior margin of p c- 

 toral fins straight, distal i convex; posterior margin concave the end 

 of each ray forming a small s.allop; lateral angle sharp Snout form.ng 

 an a^le, from its tip to division of nasal lobes, U times breadth o head 

 ridth^f'snout 1., times distance from its tip to the division o -^^ 

 nasal lobes projecting back over the mouth; width of mouth U its d.s- 

 rLe to tip'of inout ; numerous blunt buccal papilh. around u^per den- 

 tal plate and on ridge between nostrils; mterorbital 4* ^ J^^ ^Ys well 

 sma ler than spiracles, which are as long as base of dorsal. Ventials well 

 rounded, 31 in length of disk; tail 3. times disk. First caudal sp ne 

 equals base of dorsal, which is i second spine ^olor bin h black 

 with many round yellowish spots scattered equally over the back and 

 ventral fin's; spots about as large as eye on back smaller «" --'--; 

 times two spots run together forming an elliptical spot, about 16 spots 

 f rreye along anterioi margin of pectoral to lateral angle; posterior 

 mardu of pectoral very narrowly margined with white; ventral side 

 7X white. From the description of JetohaU,s laiiccps this species 

 ff I in the following respects: Disk not so broad; tail not so long; 

 widtb "head and snout less; ventrals not truncated behind; pectorals 

 It margined with blackish; spots on ventrals not assuming the form of 



"''page sT For the description of Fteroplatea creliripunctata in text sub- 



"^;^f m^X length to posterior end of anal slit; snout ^^in. 

 a regular curve from a little in front of middle of pec-torals, a -ry sn al 

 blunt projection at tip; anterior margin of disk convex — --^ ^f 

 lateral angles, pectorals concave medially; posterior margin weakly con- 

 vex; posrerioi' angle broadly rounded; lateral angle ^^l^'^^^;^ 

 distLnL irom snout to a line drawn through ateral ^^^^^^ ^^ 

 distance to tip of tail. Interorbital a little wider than .^*«; f ^f^^ ^/j 

 of snout ; eyes twice spiracles ; mouth equals snout, 6i in disk. 1 ail rat 



