SlinlifS oil maiirir Oslr.'icoJs 



279 



T li e f u r c a. u p p o r lip. r n d - s li a p e d o r ^ n n and lateral e y ft s are 

 like those of the female. 



Remarks: — The above description is based on two specimens, a mature femalb and 

 a mature male, which were kindly sent to me by Professor G. 0. Sars for a supplementary 

 investigation. To judge from a statement by G. 0. Sars in his note under the original de- 

 .<cription, p. 279 : ,,en fuldvoxen Hun med store gulr0de Aeg indenfor Rkallen" *, the female specimen 

 investigated by me does not seem to be the same one as that on which G. 0. Sars's original 

 description was based, as the female I investigated had no eggs in the brood-chamber (the eggs 

 in the ovaries were, however, rather large); moreover it was not dissected but quite intact. 



There can scarcely be any doubt, however, that the female investigated by me really 

 belongs to G. 0. Sars's Cypridina megalops. — G. 0. Sars's original description of this form 

 is very incomplete; G. W. MtlLLER (1912) indicates this species as unidentifiable. All the 

 characters given by G. 0. Sars agree, however, with only one slight exception. The second 

 exopodite joint on the sixth limb should have only fourteen bristles, the five posterior ones of 

 which should, in addition, be separated from the anterior ones by a gap. ,, Lamina terminalis 

 subovata setis ciliatis circiter 14 posterioribus 5 ceteris intervallo brevi sejunctis marginata." 



The male of this species was previously entirely unknown. On account of the great 

 resemblance it shows to the female, there can be little or no doubt that the male described above 

 really belongs to this species. The only thing that might be said not to be in favour of this 

 assumption is the fact that it is larger than the female. For if we are to judge from the literature 

 tlie males of forms belonging to this sub-genus are always somewhat smaller than the females. 



This species occupies a somewhat isolated position from the two forms of this sub-genus 

 that have been previously described on account of the following characters: 



the considerable lengthening of the f- and g-bristles of the first antenna in the male, 

 the reduction of the endopodite of the second antenna, 



the development of special muscles for closing the end comb of the seventh limb and 

 the strong development of the lateral eyes. 



It did not seem proper to me to include as synonyms Cypridina megalops of A. M. NORMAN, 

 1891, p. 121 („doubtful origin") and of C. H. OSTENFELD and C. Wesenberg-Lund, 1909, 

 p. 113. The information about these is not accompanied by any descriptions or drawings to 

 verify it. 



Material of 



investigation. 



Identification. 

 The female. 



'I'lir male. 



I'o, 



itwii Within the 

 siih-geniis. 



Sfinonymy. 



Habitat: — The exact locale of the specimens of G. 0. Sars investigated by me is unknown; 

 it is presumably on the west coast of Norway. 



Kristiansund, Norway: 1 mature female; W. LiLLJEBORG coll. The specimen was 

 in a very bad condition, but good enough for certaintv of identification. 



Distribution: — Norway: Hardanger Fjord. 



* Traneiatioa: ..^i ruU-grown ivmnlo with largn yellowish-red eprgs insido the shell." 



