above resemble Eomyctophum menneri Danil.; indeed, the small differ- 

 ences concerning the number of vertebrae and the distance from the 

 end of the dorsal fin to the beginning of the anal fin, fits into individ- 

 ual variability. This seems all the more probable since the material 

 at Danilchenko's (1947) disposal was smaller than ours. 



Eomyctophum cf. koraetnsis Danilchenko, 1947 

 (Figs. 8—13; PL III, Fig. 2) 

 1947. Eomyctophum koraensis Danil., P. G. Danilchenko, 

 Ryby semeistva Myctophidae...., p. 194, Fig. 1 



Material: 77 skeletons, including 42 complete. 



Description. Table 6 shows the body dimensions of 6 specimens in 

 the best state of preservation. The maximum body depth represents in 25 

 individuals 19 — 24 percent of the body length without the caudal fin; 

 in 16 individuals it represents 25 — 32 percent, and in 1 individual 35 

 percent. In 40 specimens and 2 specimens respectively, the body length 

 without the caudal fin represents 32 — 38 and 30 — 31 percent. The or- 

 bital diameter always exceeds the preorbital area. 



Table 6 



Dimensions of E. cf. koraensis Danil. (in mm) 



Dimensions 



5. Os. 



3. Os. 



147. Os. 



103. Os. 



16. Os. 



152. Os. 



Length of body without caudal fin 



29.8 



20.0 



15.0 



32.6 



28.8 



22.7 



Greatest depth of body 



7.2 



5.9 



4.5 



6.8 



6.4 



6.4 



Length of head to posterior margin of 















operculum 



10.0 



7.5 



5.0 



12.9 



10.2 



8.4 



Preorbital area 



2.0 



1.6 



1.3 



2.2 



1.8 



1.5 



Horizontal diameter of orbit 



2.6 



1.8 



1.5 



3.0 



2.6 



1.9 



Predorsal area 



14.0 



10.0 



7.2 



16.6 



13.8 



11.2 



Preanal area 



20.5 



— 



10.3 



24.6 



19.3 



15.3 



Pre ventral area 



14.8 



10 



7.4 



18.0 



14.2 



7.5 



Length of caudal fin 



8.9 



6.8 



5.0 



10.5 



8.8 



8.8 



The vertebral column consists of 28 — 30 vertebrae, including 15 — 17 

 caudal. Among the material here considered, two specimens only with 

 32 — 33 vertebrae have been encountered. Hence, as compared with 

 Eomyctophum, koraensis Danil, the number of vertebrae is much smaller, 

 since Danilchenko (1947) states that in representatives of this 

 species from the Caucasus there are 33 — 34 vertebrae. The remains 



31 



