SCHIZOPODA AND CUMACKA 17 



as long as broad, and the fifth joint is inserted about at the middle of its distal margin, 

 but in C. frigida the fourth joint is triangular and so strongly expanded on the inner side 

 that it is as broad as long, furthermore the major part of the very long distal margin is 

 considerably concave and free, while the following joint is inserted on the most outer part 

 of this margin. (It may be added that this fourth joint is completely alike in both maxillipeds 

 ofthird pair.) The other joints of thèse appendages differ slightly from those in C. verrucosa. 



First thoracic legs (fig. 2 k) nearly as in C. verrucosa, but in the latter the fourth joint 

 is somewhat longer than the fifth, while in C. frigida the différence between the length of 

 thèse joints is slight. — Second thoracic legs (fig. 2 /) nearly as in C. verrucosa, but the 

 fifth joint is somewhat shorter than the seventh, while in the last-named species both joints 

 are equally long. 



Fifth abdominal segment (fig. 2111) has a very conspicuous transverse impression somewhat 

 behind the middle. The uropods (figs. 2 m — 2 n) hâve the peduncle twice as long as the 

 endopod; both rami are proportionately a little shorter than in C. verrucosa, while in other 

 respects there is scarcely any différence between the uropods of the two species. 



The colour was noted to be : « Céphalothorax isabellinus, abdomen incolore ». 



Locality. — Lat. 70048' S., long. 91 54' W., svvab, April 27, 1898; one spécimen. 



Remarks. — One might think that C. frigida is identical with C . verrucosa var. antarctica 

 described and figured by W. T. Calman in his report on the Cumacea from the National 

 Antarctic Expédition. But in 1907 I laid my figures given hère before that author who made a 

 new préparation of the third maxillipeds of his species, and the fourth joint of thèse appendages 

 presented the normal shape, thus differing widely from my species. 



m 



R 57 



