Uneven Rostrum, Narrow Angle, Large Species, Short Rostrum
Gonatus / Galiteuthis

　Wing shoulder high ridge-like with a deep wide groove at jaw angle.---
Galiteuthis phyllura
　(LRL=6.2mm)　

　　　Wing shoulder low; wing teeth narrow rectangular, plate-like
---Gonatus middendorffi / Gonatus sp. spent
　
G. middendorffi　(LRL=4.8mm)
　
Gonatus sp. spent female (LRL=6.0mm)　

＊Low beak of the last line Gonatus sp. was removed from gelatinous spent female. This beak is fully pigmented
and resembles to the above G. middendorffi irrespective of uupigmented condition.