466 



Remark*. This form was first recorded by Metzger from the east 

 Frisian Coast as Alylus falcafu*, and some years afterwards the author, not 

 being at that time aware of Metzger's paper, described the same form from 

 the Norwegian coast under another name, viz , Atylus imcinatus. It is very 

 nearly allied to P. Sirammcrdami but may at once be distinguished by the 

 very peculiar development of the 1st pair of pereiopoda, and the rudimentary 

 nature of the 2nd pair. Moreover the mutual longitudinal relation of the 

 outer joints on the posterior pairs of pereiopoda is rather different. 



Occurrence. I have met with this form in 3 widely distant localities 

 of the Norwegian coast, viz., at Jaederen, south coast of Norway, at Skudes- 

 naes, Karm0, and at Sorvser, west coast of Finmark. In all 3 places it occur- 

 red rather sparingly in comparatively shallow water, together with P. Su-ani- 

 merdami. It employs its peculiarly modified 1st pair of pereiopoda for getting 

 hold of some fragment of shell, or piece of algse, beneath which it conceals 

 itself with great dexterity. 



Difttfilml'ion. East Frisian Coast (Metzger), Dutch coast (Hoek), 



coast of France (Chevreux). 



3. Paratylus vedlomensis (Sp. Bate). 



(PI 164, fig. 2). 



Dexaiinc m//ow.<,-/s, Sp. Bate & Westwood, Brit, Ress.-eyetl Crustacea I, p. 242. 



Syn.: Atylus vedlomensis, Boeck. 



Body somewhat more slender than in the 2 preceding species, and 

 very distinctly keeled dorsally, the carina being elevated in the last segment 

 of mesosome and those of metasome, to compressed, posteriorly-pointing 

 projections. First segment of urosome produced dorsally in a manner similar 

 to that in the said species. Cephalon with the rostral projection somewhat more 

 prominent, anterior edges forming, below the insertion of the superior antennge, 

 a small acute lappet, and farther down a rounded lobe. Anterior pairs of 

 eoxal plates scarcely as deep as the body; 1st pair rather narrow, and some- 

 what tapering distally; 3rd pair considerably broader than the 2nd; 4th pair 

 hut little larger than the former, and obtusely rounded at the infero-posteal 

 corners. Last pair of epimeral plates of metasome rather narrow, and rounded 

 at the lateral corners, though exhibiting a very small and obtuse projection 

 inferiorly. Eyes comparatively smaller than in the 2 preceding species, and 

 <>v;il in form, pigment dark brown, with a whitish coating, Antennas very 



