1917.] NATURAL SCIENCES OF PHILADELPHIA. 131 



alcohol largely uniform olive-brown above, pale yellowish below 

 (later turning whitish). Lower jaw grayish. Dorsal and anal pale 

 or translucent, edged blackish, this most distinct posteriorly. End 

 of tail whitish. Pectoral grayish. Iris white. Length, 400 mm. 

 Gymnothorax funebris Ranzani. 



Head of large example. It shows eye 2 in snout, mouth completely 

 closing and vomer with two rows of teeth in its median extent. 



Gymnothorax ocellatus Agassiz. 



Four examples, 350 to 395 mm. 

 Felichthys marinus (Mitchill). 



Three examples, 315 to 324 mm. long, which agree with my New 

 Jersey series. The specimen recently listed^ from Wounta Haulover, 

 Nicaragua, is found on further comparison to be Felichthys filamento- 

 sus Swainson, differing chiefly in its longer pectoral spine, which is 

 very little shorter than the head. 



Tylosurus timucu (Walbaum). 



Two examples, 483 to 490 mm. 



Sphyraena guachancho Cuvier. 



Five, 180 to 228 mm. 

 Holocentrus adscensionis (Osbeck). 



Three, 146 to 180 mm. 



Scomberomorus oavalla (Cuvier). 



Three examples, 191 to 228 mm. All with isopod parasites in 

 the gill-cavities. 



I previously listed young examples from Port Limon, Costa Rica^ 

 and Colon. '^ A re-examination and comparison of this material 

 shows that three larger examples of those obtained at Colon are 

 Scomberomorus maculatus (length 127 to 148 mm.) The one repre- 

 senting the present species is 147 mm. long. 



Caranx bartholomaei Valenciennes. 

 One, 173 mm. long. 



€aranx hippos (Linn6). 



Three, 127 to 142 mm. 



•Caranx orysos (Mitchill). 



Two, 140 and 148 mm. 



5 Proc. Acad. Nat. Sci. Phila., 1915, p. 203. 

 « Proc. Acad. Nat. Sci. Phila., 1916, p. 398. 

 ' L.c, p. 401. 



