946 LIVERPOOL BIOLOGICAL SOCIETY. 
from M. flexuosa (Muller) in having only five joints in the 
anterior tarsi instead of six, and in the antennual scale 
being barely twice as long, instead of more than twice as 
long, as the peduncle of the upper antenne. 
4. Cuma scorpwoides, Mont. 
I have referred the specimens taken to this species as 
the oldest. Nevertheless if Sars is correct in saying that 
this species 1s distinguished from C. edwardsi, Goodsir, 
(among other characters) by the inner branch of the uro- 
pods consisting of one single joint instead of two joints as 
in C. edwardsi,* then our specimens should be referred 
to the last-named species. Sars also states that C. 
edwardst may be distinguished from C. scorpioides ‘‘ by its 
shorter length and by its dark brown-violet colour.”’+ 
But all my specimens, except one, are of a sandy colour, 
and that one, which is almost black, was taken at the same 
time and place as two or three sandy-coloured individuals, 
from which it does not differ in structure. Hoek appears 
to be doubtful whether these two forms are specifically 
distinct.t Goodsir’s description§ of C. edwurdsi and C. 
audouind is so full of errors that it 1s impossible to make 
much of it. The figure of C. audouini shows indications 
of pleopoda, which are not mentioned in the description, 
and I am inclined to think that one of the above species 
is the female and the other the immature male of C. 
scorpioides. The ‘‘ thumb-like process” of the “ first pair 
of legs’ (the third maxillipedes) is merely the external 
extremity of the first joint, and is, of course, not jointed 
at all. No such jointed process at the extremity of this, 
as described and figured by Goodsir, exists in the Cumacea, 
* Middlehavet’s Cumaceer, p. 21. 
+ Oversigt af Norge’s Crustaceer, p. 55. 
+ Nederlandsche Dierkundige Vereen., 1889, Deel 2, p. 2, 
§ Edinburgh New Phil. Journal, 1843 ; vol. 34, pp. 123—6. pl. ii. & iv, 
