In February 1928 I obtained from a ♂ Scyllium canicula, taken at Plymouth, a ♀ Lernaeopoda scyllicola bearing a younger and better preserved male than any I had hitherto observed. It is the first time in this genus that a male has been found anywhere other than on the female's shoulder, namely on one of the abdominal appendages, and the male was probably alive at the moment of fixation. The heads of the sexes point in opposite directions so that in Fig. 1 the abdominal appendage is “upside down,” and the genital process of the male is near a vulva of the female which is however fertilised since it bears egg-strings. I am now fortunate in having the kind services of Miss E. C. Humphreys to illustrate this male which is not shrunk into its carapace and desire that Figs 1. and 2 shall supersede my figures of 1918. The near second maxilla has been omitted to show the method of attachment of the male.