NOTES ON OEGOPS1D CEPIIALOPODS FOUND IN JAPAN. 99 



Measurements of the specimens examined by me : 



Sp. No. 



i 



ii 



iii 



Dorsal length of mantle 



140 mm. 





0,7 mm 



Ventral length of mantle 



1 20 11 



lL)U 1 1 1 II La 



05 ii 



Breadth of mantle 



72 





fin 



UU 11 



Dorsal length of head 





75 » 



55 » 



Breadth of head 



70? „ 





OO . 11 



Length of fin . 



42 





•38 



3° » 



Total breadth of fins 



63 



80 



e8 



50 » 



Breadth of eye-opening 



Left Right 

 32 mm. 17 mm. 



Left Right 

 37 mm. 20 mm. 



Left Right 

 36 mm. 21 mm. 



Length of first arm 



376 



„ 370 » 



3ÖU I, 



250 I, 250 „ 



„ second arm 









3°5 » 3°7 " 



„ h third arm 











il h fourth arm ... ... ... ... 



380 



„ 380 „ 







Length of tentacle 











club 









JJ " DD »* 



Diameter of largest sucker of first arm 



6-5 



7 



5 



il » » I. ,1 second arm 



6-5 



7 



5 



„ „ I, „ „ third arm 



6-5 



7 



5 



„ „ I, „ ,, fourth arm 



3 



3 



2-5 



h » n « >> tentacle ... 







5 



Skin nearly choroidal, thickly beset with colorless warts. Mantle short, 

 a little shorter than twice the breadth, tapering backward, acuminated 

 behind, the dorsal anterior edge somewhat projecting in the middle 

 and forming an obtuse angle, the ventral edge with a broad emargination 

 laterally bounded by angular projections. Fins terminal, slightly projecting; 



