GILBERT AND STAUKS — FISHES OF PANAMA BAY 



77 



138. Hemicaranx furthii {Sieindachner) . 

 Onl}' the types known, from Panama. Probably not distinct from //. leucurus. 



139. Hemicaranx leucurus {Giinlher). 

 Only the type known, from Panama. 



140. Caranx vinctus Jordan li- Gilbert. 



Bnt few specimens were seen, four of these preserved. They agree well with 

 the description of the type. The measurement of the eye in the original description 

 is evidently of the entire orbit. Between the adipose eyelids, the eye is 5 to d} in 

 head . 



141. Caranx hippos (Linnceus). 



We have compared seven sjiecimens from Panama and Mazatlan with five 

 specimens from Jamaica and Cuba. The Pacific examples seem to differ slightly in 

 having an average larger number of gill-rakers and more plates in the straight 

 part of the lateral line. In five of the seven Pacific specimens, the ventrals end con- 

 siderably in advance of the vent; in one specimen they reach the vent, and in one 

 they extend beyond it. The Atlantic specimens all have the ventrals reaching to or 

 a little past the vent. The Panama specimens are all a little more slender than the 

 Atlantic or Mazatlan specimens. It is not probable that these differences have any 

 importance for classification. 



Meastirements in Himdredths of Length without Caudal. 



Locality 



Length in mm. without caudal 



Depth at base of ventrals 



Distance from base of ventrals to 

 1st detached anal spine 



Distance from vent to base of ven- 

 tral fins 



Panama 



252 

 32 



Hi 



204 



34 



2li 



1 61 



260 



30 1 



21 1 



16 



261 



32I 



22 

 1 61 



254 

 31 



21 

 15 



Mazatlan, 

 Mex. 



185 



36^ 



21 1 

 15 



177 

 36 



19 



14 



Jo. 



35i 



20.i 



14 



36 



i4i 



193 

 36 



204 

 14 



172 



35 



1 3* 





228 



38 



20-|- 



I3i 



(111 



