82 



CALIFORNIA ACADEMY OF SCIENCES 



Measurements in Hundredths of Length without Caudal. 



Length without caudal in mm. 



Head 



Depth 



Eye 



Snout 



Length of jiectoral 



Length of ventrals 



Length of caudal 



Length of dorsal base 



Length of anal base 



Number of dorsal rays 



Number of anal rays 



86 

 42 



73 

 10 

 22 



43 

 60 



37 

 45 

 45 



n-!, 15 



149. Selene vomer (Linnccus). 



Common at Panama. We have compared our specimens with others from 

 Florida and Jamaica, and find only individual differences. 



150. Chloroscombrus orqueta Jordan cfr Gilbert. 



Frequently talcen in abundance. We have compared our specimens with the 

 original description (Jordan & Gilbert, 1882, 0, p. 646) and with specimens of 

 C. chrysurus. 



The depth is very variable; in our most slender specimens the depth is 2|- 

 iu the length, while in the deepest specimen (of the same length) it is 2|. 

 Between these extremes are all intermediate shapes. 



151. Trachinotus rhodopus Gill. 



Not abundant; eight specimens preserved, from 15 to 36 cm. in length. 



We have compared them with a single specimen of 7\ glaucus from Key 

 West. In addition to the less vertical snout noted by Dr. Gill, they differ in 

 having much longer, slenderer, and more numerous gill-rakers. The scales appear 

 to be smaller, and the dorsal and anal are probably slightly longer. 



The dorsal formula in seven specimens is VI, I, 20, in one specimen VI, I, 19; 

 the aual in three specimens III, 19, in five specimens III, 18. The gill-rakers are 

 long and slender, and do not greatly taper in size from their base to their tips. 



