72 MR. E. J. MIEBS ON - GREENLAND CRUSTACEA. 



species were bought of a Danish sailor at Umenak, who had taken 

 them from the " eye of the Greenland Shark," the situation in 

 which they are always parasitic. 



A specimen of a second small species of this genus is in the 

 collection, said to have been taken from the gills of a Trout, and 

 closely allied to, if not identical with, L. salmonea or L. JEdwardsii ; 

 as, however, it is in imperfect condition, and the bulla terminating 

 the arms is wanting, it cannot be identified with certainty. 



Appendix. 



Notice of two Additional Species collected during the British 

 Arctic Expedition in 1875-76. 



A box containing Invertebrata collected by naturalists of the 

 late British Arctic Expedition was brought to the British Mu- 

 seum, after the various groups had been distributed to the natu- 

 ralists entrusted with the working out of the collections, and after 

 my report on the Crustacea bad been published. It contained 

 several species from Discovery Bay, among them some additional 

 specimens of Munnopsis typica dredged in 30 fathoms, and the 

 following species, which were not represented in the collections 

 previously examined. 



Ntmphon robustum. 



Nymphon robustum, Bell, in Belcher, Last of the Arctic Voyages, ii. 

 Crust, p. 409, pi. xxxv. fig. 4 (1855). 



A single individual (adult female with ova) was taken at Dis- 

 covery Bay, in 30 fathoms, off specimens of Crinoids, which I do 

 not hesitate to refer to this species. It is of large size (length be- 

 tween legs when fully extended nearly 4 in.). It is distinguished 

 from JY". hirtum, which occurred abundantly in the same locality, 

 and more particularly from the variety described by me (Ann. Nat. 

 Hist. 1877, xx. p. 109, pi. iv. fig. 3) as obtusidigitum, by the chelae, 

 which have the palmar portion very short and globose, and the 

 fingers long, slender, arcuated, and acute at the tips. Moreover, 

 the whole animal is clothed with a pubescence so short as to be 

 scarcely discernible by the naked eye (on which account, 1 

 suppose, the legs are described by Bell as " quite naked "), while 

 in N. hirtum and obtusidigitum the hairs that cover the animal are 

 long. Bell's examples were obtained in Northumberland Sound, 

 in 33 fathoms. 



