GILBERT AND STAltKS — FISHES OF PANAMA BAY 



83 



They number 14 or 15 on the lower limb of the arch, and in length are from three- 

 fifths to two-thirds the diameter of the eye. 



The character of width or jwsition of the cross-bars is without value. In one 

 of our small specimens, the second bar on one side occurs directly midway between 

 the first and second bars on the reverse side, while the third bar is only a little behind 

 the second bar of the reversed side. The first two bars are not always nearer 

 together than the others, as described by Jordan and Evermann. The bars are not 

 so conspicuous in our small specimens as in the large ones, but they are evident. 



In our specimens of 2\ glaucus, the dorsal formula is V, I, 19, the anal 

 III, 17. The gill-rakers are short and thick at the base and taper rapidly to a 

 point. They number 9 on the lower part of the arch, and in length are but 

 one-third the diameter of the e3^e. 



Measurements in Hundredths of Length without Caudal. 



Species 



Locality. 



TRACHINOTUS RHODOPUS 



Panama 



TRACHINOTUS 

 GLAUCUS 



Key West 



Length without caudal in mm 



Head 



Greatest depth at angle of dorsal. 

 Eye 



Snout 



Maxillary 



Interorbital (bone) 



Pectoral fin 



Ventral fin 



Upper caudal lobe 



Length of gill-rakers 



Height of caudal peduncle 



Number of dorsal spines 



Number of dorsal rays 



Number of anal spines and rays 



Number of gill-rakers on lower limb of arch 



227 



27 



51 

 6i 



6i 

 9\ 

 9 

 23 

 10 



50 



3i 



VI, I 



20 

 III, 18 

 15 



26-^- 



54 



6^ 



7 



10 



9i 

 24 



lOi 



53 

 4 



VI, I 



20 

 III, 19 



15 



232 

 27 



49 

 6i- 

 7 



9i 

 91 



23 



51 

 4 

 9 



VI, I 



20 



III, 19 



14 



226 

 26J 

 53 



^ 



9 



9i 



21^ 



Hi 

 Broken 



9 



V, I 



19 



III, 17 



9 



