168 



FISHERY BULLETIN OF THE FISH AND WILDLIFE SERVICE 



I I I I I 



UPPER JAW 



I I I t I I I I 



++- 



2 

 3 



LOWER JAW 



20 30 40 SO 



STANDARD LENGTH IN MM. 



Figure 40. — Relation of mimuci ui urcm m ic 

 lower jaws to standard length. Large blac 

 unidentified species. 



ber of teeth in left side of upper and 

 ' ' k dots represent the 



Table 10. — Surface temperatures, salinities, and oxygen concentrations for locations of capture of some istiophorid larvae 



[Some data were made available by the U. S. Hydrographic Office, and other data were taken from the Report of the U. S. Commissioner of Fisheries for 1885 



and records of the U. S. National Museum] 



