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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. Lni). 



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 b l /-> 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 uropocla 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. 



