EELS OF THE GENUS CONGER IvANAZAWA 



233 



veloped until the eels are about 280 to 480 mm. long.^There is 

 population divergence in this development in C. c. cinereus from the 

 various geographical localities (fig. 6). Specimens from the Marshall 

 Islands show the fall development at a length of about 480 mm., 

 whereas those from Okinawa show full development at about 280 mm. 



PORES IN LATERAL LINE 



HAWAII 



MARSHAL LS 



SAMOA 



NEW CALEDONIA 



GUAM. CAROLINE 



P. I., OKINAWA 



AFRICA, RED SEA 



40 



-wm^BBmm- 



nsmslsmavi 



^sai 



41 



PECTORAL RAYS 



HAWAII 



MARSHAL LS 



SAMOA 



NEW CALEDONIA 



GUAM, CAROLINE 



P. I., OKINAWA 



AFRICA, RED SEA 



PORES IN LATERAL LINE PLUS PECTORAL RAYS 



HAWAII 



MARSHALLS 



SAMOA 



NEW CALEDONIA 



GUAM, CAROLINE 



P I., OKINAWA 



AFRICA, RED SEA 



3S 



S7 



sa 



S9 



«0 



i^h: 



lai^i 



""^lllHiW 



r-BBssm I 



Figure 5. — Pores and pectoral rays in the subspecies Conger cinereus cinereus and C. c. 

 marginatus from the various geographical areas. All specimens found in Hawaii are of 

 C. c. marginatus, while all the specimens found in the other areas are of C c. cinereus. 

 Numbers at the left indicate the number of specimens examined from each area. In each 

 horizontal bar-graph the range of variation is represented by the solid bottom line; the 

 mean is represented by the small vertical line at the tip; twice the standard error on cither 

 side of the mean is represented by half the solid rectangle; and one standard deviation on 

 either side of the mean is represented by the hollow rectangle plus half the solid rectangle. 



