11 



terior lip comparatively small, helmet-shaped. Mandibles with the masticatory 

 process cleft at the tip, and obsolete in male. Postoral limbs on the wohle 

 built on the same type as in Cypridina. Anterior maxillipeds however in 

 female (but not in male) distinguished by the remarkable development of the 

 proximal endopodal lobe, which projects in a large and highly chitinised bian- 

 gular or securiform piece carrying inside a row of stout claws. Copulative 

 appendages of male comparatively small, lobular at the end. 



Remarks. In the year 1853 Prof. Lilljeborg described 2 Cypridinids found 

 by him off the coast of Skane. The one of them was referred by him to 

 the genus Cypridina and named C. globosa, the other, of wich only a single 

 specimen was found, was regarded as the type of a new genus and recorded 

 under the name Philomedes longieornis. The first-named of these 2 forms 

 was subsequently found by the present author rather abundantly on the coast 

 of Norway, and was subjected to a closer anatomical examination, wich showed 

 it to be so decidedly different from the species of Cypridina that I felt justified 

 to establish for its reception a new genus, which I named Bradycinetus in 

 allusion to the slow movements of the animal. I was at that time still of 

 opinion, that the genera Bradycinetus and Philomedes were very distinct, the 

 one from the other, and it was only several years afterwards that the true re- 

 lationship between the 2 Cypridinids recorded by Lilljeborg was revealed to me. 

 In the year 1869 1 ) I set forth the rather perplexing suggestion that these 2 

 apparently so widely different forms should more properly be combined into 

 the very same species, Philomedes longieornis being nothing else than the 

 adult male of Cypridina (Bradycinetus) globosa. This suggestion has since been 

 fully corrobonated both by myself and by other authors, and the remarkable 

 sexual dimorphism in the present genus thereby ratified. Of course the 

 generic name Bradycinetus ought to be wholly discarded and replaced by that 

 originally proposed by Lilljeborg for the male sex. 



Several of the Cypridinid genera established in recent time approach the 

 present genus rather closely, and have by Dr. Skogsberg been grouped together 

 with it in a subfamily, Philomedince. The genus Philomedes proper comprises 

 only a limited number of species, 2 of which belong to the Fauna of Norway. 



!) Undersegelser over Christianiafjordens Fauna. 



