47 



those from the Atlantic be accepted as belonging to one species — lep- 

 turns — we find there to be a considerable variation in their proportions. 

 We subjoin tables to illustrate this variation, as well as to show the 

 affinities of the species from the Gulf of California with those found in 

 the Gulf of Mexico, and also the relations of haumela with specimens from 

 the Caribbean Sea. The specimens of haumela from which the measure- 

 ments were taken came from the Indian Ocean, through the British Mu- 

 seum. The proportions from Cuvier and Valenciennes are taken as the 

 standard for comparison. 



Leptnrus. 



C. & V. New York. 



Cuba. 



Height in total 

 Head in total.. 

 Snout in head . 

 Eye in head . . . 

 Eye in snout . . 

 Tail in total . . . 



2t 

 6 



2i 

 7 



16TT- 

 8i 

 3 

 6 

 2 

 7 



— 3 



6i 



Height in total 

 Head in total . 

 Snout in head. 

 Eye in head . . . 

 Eye in snout.. 

 Tail in total . . 



Lower Cali- 

 fornia. 



7 



3^ 



6 



It 



5^ 



Lepturus. 



Texas. 



+ 3 



If 

 6 



Florida. 



— 3 



2 

 6 



Mississippi. 



— 8 



— 3 

 5-^ 



2 



Haumela. 



Indian Ocean. 



Lepturus. 



Graytown, 

 Nicara^iua. 



Graytown, 

 Kicaragua. 



Height in total 

 Head in total.. 

 Snout in head . 

 Eye in head . . . 

 Eye in snout . . 

 Tallin total ... 



3t 



I5r 

 + 3 



15 

 6f 

 — 3 



7 

 2f 



