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Distribution. —Kattegat (Meinert), British Isles (Robertson), Heligoland 
(Ehrenbaum), Dutch coast (v. Beneden), coast of France (de Folin), Mediterranean 
at Messina, Syracusa and Goletta (the present author). 
2. Pseudoeuma similis, G. 0. Sars, n. sp. 
(Pi. LIII). 
Specific Characters. —Very like the type species, but of larger size and 
less slender in form. Carapace sculptured on each side with 2 well-marked 
oblique plicae similar to those occurring in P. cercaria, pseudorostral projection 
less prominent, subrostral corners armed in front with 3 distinct denticles. Tail 
(excluding the terminal appendages) about the length of the anterior division, 
and less narrow than in the type species. Eye very conspicuous, especially in 
the male. Antennae, oral parts and legs about as in P. cercaria, terminal joint 
of 2nd pair of legs in male, however, with 3 denticles at the tip, the distal one 
hamiform. Anterior pair of pleopoda with only 2 setae inside the basal part, 
posterior pair with a single spine outside. Uropoda somewhat more slender than 
in the type species, rami shorter than the stem, and differing very little in length, 
the inner one in female with about 6, in male with 12 spines inside. Telson in 
female rounded quadrangular in form, being transversely truncated behind, edges 
smooth. Colour yellowish, anterior division of body more or less variegated with 
a light brownish pigment. Length of female about 5 mm., of male 5‘/a mm. 
Remarks. —This form' is closely allied to the type species, and, indeed, 
it is only quite recently that I have become aware of its specific distinctness. It 
is of somewhat larger size than P. cercaria, and less slender in form, and also 
lighter in colour. On a closer examination, it may also be easily distinguished 
by the less prominent pseudorostral projection, the quadridentate subrostral cor¬ 
ners, and the structure of the uropoda and telson. 
Occurrence. —The only place where I have hitherto met with this form, 
is at Skudesnses, west coast of Norway. It occurred here together with the type 
species in a depth of 6 —12 fathoms, on a bottom consisting of coarse sand 
and gravel. 
