THE 



VOYAGE OF H.M.S. CHALLENGES. 



ZOOLOGY. 



REPORT on the Cumacea collected by H.M.S. Challenger during the years 

 1873-76. By Professor G. 0. Sars, of the University of Christiania. 



INTRODUCTION. 



The Cumacea obtained during the voyage of H.M.S. Challenger form a comparatively 

 small part of the rich collection of Crustacea procured during the Expedition, the 

 number of species amounting to only fifteen. They belong, however, to eight different 

 genera, and thus most of the leading types of this interesting group are in reality found 

 to be represented in the collection. The specimens were, as a rule, preserved in the 

 usual manner in strong spirits ; but a few forms had been immediately mounted in 

 Canada balsam on glass slides, and the examination of these could not, of course, be so 

 satisfactorily made as in the case of the others. Four of the species were detected by 

 myself in examining some small samples of dredged material kindly sent to me by 

 Mr. John Murray. 



The specimens were collected partly in the Atlantic, partly in the Pacific, and partly 

 in the Southern Ocean, especially at Kerguelen Island, where no less than five of the 

 species were procured. The greatest depth from which Cumacea were procured was at 

 Station 246, in the North Pacific (2050 fathoms), and the least depth at Flinders 

 Passage (7 fathoms). Two of the species were, moreover, taken at the very surface of the 

 sea, off Samboangan, Philippine Islands. 



In describing the species I have made use of the terminology adopted in my Report 

 on the Schizopoda of the Challenger collection, 1 and have endeavoured to give a more 

 detailed account of such forms as represent separate groups or families of the order. 



1 Zool. Chall. Exp., vol. xiii. pt. xxxvii. p. 3. 

 (ZOOL. CHALL. EXP. — PART LV. — 1886.) Iii 1 n 



