Broad Fold, Short Rostrum Group - MASTIGOTEUTHIDAE / ENOPLOTEUTHIDAE

　　Fold broad runs obliquely to inner corner; wing teeth large trapezoidal; wing shoulder low,
translucent at LRL=3mm--Mastigoteuthis cordiformis
　　

　Fold short runs anterior half; wing teeth semicircular; wing shoulder low with a narrow
shallow groove--Watasenia scintillans
　

All Right Reserved Kubodera, 2000