150 



the carpal one, dactylus minute; the 3 succeeding pairs rather slender, though 

 scarcely exceeding the body in length, dactylus very long and slender; 2nd pair 

 somewhat more strongly built in male than in female, with the carpal joint slightly 

 dilated. Natatory legs with the propodal joint broadly oval, much constricted at 

 the base, dactylus narrow, styliform. Uropoda extremely small, outer ramus 

 scaively half as large as the inner. Colour of dorsal face very dark fuscous, 

 towards the edges of the segments almost black. Length of adult female LVa mm. 



Remarks. — This species may be easily distinguished from the preceding 

 ones by the broad, obtusely rounded frontal part of the cephalon, and by the 

 very dark colour of the dorsal face. It is also rather inferior in size. 



Occurrence. — I first found this form in the inner part on the Christiania 

 Fjord, and have subsequently met with it in many other places of the Norwegian 

 coast, and as far north as Bodo. It is not strictly a deep-water species, being 

 often found in only a few T fathoms' depth among algse. Its swimming motions 

 are extremely rapid, and are effected by long abrupt bounds backwards. Out of 

 Norway this form has not yet been recorded. 



7. Euryeope pygmaea, G. 0. Sars. 



(PI. LXVIII, fig. 2.) 



Ewycope ■pygmcen, G. 0. Sars, Nye Dybvandscvustaceer fra Lofoten, Cliv. Vid. Selsk. Foi'h. 



1869. p. 16B. 



Specific Characters. — Body ovate, greatest width equalling about half the 

 length, and occurring in the middle. Frontal part of cephalon very broad, slightly 

 widening distally, and transversely truncated at the tip, with the lateral corners acute. 

 1st segment of mesosome very small, with the lateral parts concealed ; lateral 23arts of 

 the 3 succeeding ones slightly produced in front; 5th and 6th segments imperfectly 

 defined dorsally. Caudal segment of moderate size, narrowly rounded at the tip, 

 lateral edges setiferous. Superior antennae, about as in E. mutica. Inferior an- 

 tenna? not nearly attaining twice the length of the body, flagellum but little longer 

 than the peduncle. Maxillipeds with the penultimate and antepenultimate joints 

 greatly expanded, laminar, epignath short and broad, resembling that in E. mutica. 

 1st pair of legs with the propodal joint scarcely more than half the length of 

 the carpal one; the 3 succeeding pairs of a similar structure to those in E. mu- 

 tica. Natatory legs with the propodal joint considerably expanded, rounded oval 

 in form,, dactylus unusually broad, fusiform in outline, with the edges serrate. 

 Uropoda very small, and resembling those in E. mutica. Colour of dorsal face 



