98 



THE VOYAGE OF H.M.S. CHALLENGER. 



A species of Scalpellum, which, so far as I know, has not been observed hitherto, 

 is a common commensal on the legs of Nym^yhon rohustum. Bell. 



This species was dredged at 



Station 8 (cruise of the "Knight Errant"). Lat. 60° 3' N., long. 5° 51' W. August 

 17, 1880. Depth of the sea, 540 fathoms. Cold area. Perhaps 1000 specimens. 



Station 2 (cruise of the "Knight Errant"). Lat. 60° 29' N., long., 8° 19' W. July 

 28, 1880. Depth of the sea, 375 fathoms. Warm area. One specimen only. 



This single specimen from the warm area must, most probaljly, be considered as one 

 which has strayed from the cold area. As far as I know, the species has not been 

 observed at a lower latitude than 60° N. 



Nymphcm rohiistum, Bell. 



Colossendeis proboscidea, Sabine (sp.). 



Phoxichilus prohoscideus, Sabine, Marine Invertebrate Animals in a Supplement to the Appendix 



of Captain Parry's Voyage for the Discovery of a North- West Passage in the years 1819- 



1820, London, John Murray, 1824, p. ccxxvi. 

 Colossendeis horealis, Jarzynsky, Prtemissus Catalogus Pycnogonidarum inventarum in mari glaciali 



ad eras Lapponire rossicre et in mari albo, anno 1869 et 1870. Annales de la Soc. des 



Naturalistes de St P^tersbourg, vol. i., 1870. 

 Colossendeis proboscidea, Sabine (sp.), G. O. Sars, Prodromus descriptionis, &c., Archiv. fiir 



Math, og Naturvid., ii. 268, 1877. 



Of this interesting species, the first of the genus Colossendeis that was observed, four 

 specimens were trawled at Station 8, together with many specimens of Nymphon 



