12 llcv. T. R. R. Stebbing on Arctic Grustacex. 



1879. Mi/.ti(/<'is i/>(iiidis, Sars, Monogr. Norges Mysider, pt. 3, p. 106, 

 pis. xli., xlii. 



A S|)eciineii, 1! inch in length, and tt\'0 of smaller size, 

 Nvcve obtained at 70° 51' N., 53° E., in about 20 fathoms 

 de|)th, comparatively shallow water for this apparently rare 

 species. 



CUMACEA. 



In this group the only captures observed were Leucon 

 jmUidus, Sars, from a depth of 60 fathoms, and some small 

 specimens taken with the tow-net, probably belonging to 

 Lav}props fuscata, Sars; but the lateral margin of the cara- 

 ])ace is furnished with five or six denticles, the first joint of 

 the inner branch of the uroj)ods has only six spines, and the 

 apex of the telson scarcely looked as if it could have been 

 furnished with more than three spines, the full number in 

 L. f II scuta being five. 



ISOPODA. 

 Tribe Chelifera. 



Genus CryptocOPE, Sars, 1880. 



1880. Cryptocope, Sars, Isopoda Chelifera, Arch. Naturv. p. 49. 



1880. Cryptocope, Norman aud Stebbing, Trans. Zool. Soc. London, 



vol. xii. pt. 4, p. lOG. 

 18^6. Cryptocope, Siu-s, Crustacea of Norway, vol. ii. p. 33. 



Cryptocope arctica, Hansen. 



1887. Cryptocope arctica, Hansen, Dijmphna Krebsdyr, p. 209, pi. xxi. 

 fig. 4 ; id. Make. Groenl. occid., Vid. Medd. p. 180, pi. vii. figs, 1-1 c. 



This minute species, less than -^ inch long, differs from 

 the Cryptocope Voringii and Cryptocope abhreviata in having 

 setas on the pleopods, of which the other two species are 

 devoid. The seta are apical in the specimen I have examined. 

 It has the antennas agreeing with those figured by Hansen in 

 pi. vii. fig. 1 h for the female. Also apparently the outer 

 branch of the uropod is two-jointed, m agreement with 

 Hansen's figure of tliat microscopic appendage in the ovigerous 

 female. According to Sars the outer branch is one-jointed in 

 the female both of C. ahbreviata and of the larger C. Vdrinyi'i, 

 although in 1876, when describing the latter as Tanais 

 Voriugiij he had stated that both branches of the uropods 

 ■were two-jointed in the female. 



Mr. Bruce's specimens came from a depth of 100 fathoms. 



