Figure 9. — Bathylagus oohotensis, juvenile, 25.5 mm. SL, station 73.50, H5204. 



Figure 10. — Bathylagus wesethi, juvenile, 27 mm. SL, station 92.117, S4903. 



This species has at times been referred to by its 

 junior synonyms, B. almcanus Chapman and B. 

 arm' Schmidt (D. M. Cohen, personal communica- 

 tion). 



OPI STHOPROCTIDAE 



21. Macropiwna microstoma Chapman. 



Figure 8C. 



60.70, H6204, (2) 18.5-20.5 mm.; 60.90, H6204, (1) 20.5 

 mm.; 83.77, C6303, (1) 31 mm.; ,86.92, C6303, (11) 89-127 

 mm.; 87.80, C6303, (2) 120-133 mm.; 100.65, C6303, (1) 



24.5 mm. 



Previous collections in the eastern North Pacific 

 had indicated this to be a rare and solitary species 

 that did not attain a large size — no more than two 

 specimens had been taken together in the same net, 

 and the largest size reported was 40.7 mm. 

 (Bradbury and Cohen, 1958:59). The large 

 Cobb Mark-II pelagic trawl caught 11 specimens 

 up to L33 mm. SL in one tow; such large nets 

 clearly sample the bathypelagic zone more ade- 

 quately. The 13 larger specimens (89-133 mm.) 

 all appeared sexually mature; the females had 

 large ovarian eggs. 



The ovarian eggs showed the following (John S. 

 MacGregor, personal communication). The larg- 

 est developing eggs had diameters of '2.17 to 2.53 



mm. — a 95-mm. SL female had 497 eggs. The 

 largest remnant egg was 3.47 mm. in diameter and 

 had a 0.91-mm. oil drop in a 123-mm. SL female 

 that also contained 669 developing eggs of 0.76 to 

 1.01 mm. diameter. 



22. Dolichopteryx longlpes (Vaillant). 



Figure 8C. 



83.90, C6303, (1) 74 mm.; 97.65, C6303, (1) 138 mm.; 

 108.63, C6303, (4) 51-180 mm.; 110.140, H0204, (1) 53.5 

 mm. 



These specimens were identified with a key pre- 

 pared by D. M. Cohen. 



STERNOPTYCHIDAE 



23. Argyropelecus paedficus Schultz. 



Figure 8D. 



60.60, H6204, (2) 25-42 mm.; 60.70, H6204, (1) 30.5 

 mm.; 60.70, C6208, (1) 15.5 mm.; 60.90, C6208, (1) 56.5 

 mm.; 60.160, B6203, (2) 62.5-69.5 mm.; 80.55, H6204, (2) 

 17-18.5 mm.; 80.60, H6204, (6) 15-52.5 mm.; 80.60, C6208, 

 (8) 42-58 mm.; 80.70, H6204, (1) 19 mm.; 80.70, C6208, 

 (2) 47.5-54 mm.; 80.90, H6204, (2) 16.5-39 mm.; 83.74, 

 C6303, (105) 17-80 mm.; 83.90, C6303, (62) 19.5-63 mm.; 

 84.67, C6303, (9) 18-27.5 mm.; 84.70, C6303, (1) 50 mm.; 

 86.92, C6303, (5) 19-68 mm.: 87.80, C6303, (3) 27-78.5 

 mm.; 90.45a, H6105, (1) 48 mm.; 90.45, H6204, (2) 18.5- 

 19 mm. : 90.47, C6208, (37) 18-54 mm. ; 90.48a, H6105, (1) 

 24.5 mm.; 90.60, C6208, (5) 50-59.5 mm.; 90.70, H6204, 



640 



U.S. FISH AND WILDLIFE SERVICE 



