On the Subman'ne- Cable Fauna. 169 



EXPLANATION OF PLATE XV. Ji. 



J'^i</. A. PeUif/onemerfes liolksfoni, from the ventral surface. X 2 diameters. 



1, mouth, with a'soi)haj,ais ; 2, partly protruded proboscis ; 



3, nerve-ganglia; 4, nerve-cords; 5, ovaries; G, digestive canal. 



The sheath of the proboscis is seen through the body lying 



behind the digestive canal. 

 fi(/. D. Sketch of the proboscis-sheath and contained retracted proboscis, 



from the dorsal aspect : 1, retractor muscles inserted into the 



commencement of the sheath. 

 Fiff. c. 1, one of the polygonal areas, enlarged, showing the wrinkles of 



integument producing the appearance ; 2, peculiar appearance 



of some of the folds of the integument. 

 Fiff. D. Reticular appearance of the integument observed in certain parts 



of the body. Natural size. 



XXI. — Submarine- Cable Fauna. By J. GwYN Jeffreys, 

 LL.D., F.R.S., and the Rev. A. M. Norman, M.A. 



[Plate XII.] 



A NOVEL and unusual method of collecting specimens of the 

 marine Invertebrate fauna is by means of the telegraph- 

 cables which are laid down along so many of the great ocean 

 highways. These cables occasionally need repairs, and must 

 be taken up for that purpose. An opportunity has lately 

 occurred, through the kindness of Sir James Anderson, of 

 observing the animals which were found attached to the 

 Falmouth-and-Lisbon cable, laid in June 1870, and taken up 

 last autumn for repairs between N. lat. 47° 58' and 47° 35', 

 and in W. long. 7° 6', at depths ranging from 89 to 205 fathoms 

 on the edge of soundings ; bottom sandy. Such depths are 

 now not considered great ; but the ground seems to have 

 been hitherto unexplored by the dredge. The accuracy 

 of the communication made by Sir James Anderson is un- 

 questionable, and differs in that respect from the informa- 

 tion which misled M. Alphonse Milne-Edwards, when he 

 published a list of the animals attached to a cable which 

 was taken up several years ago between Cagliari and 

 Bone. 



The Mollusca thus procured are interesting only for tlie 

 sake of locality ; they will be noticed by Mr. Jeffreys. An 

 account of the other Invertebrates, including some new forms, 

 will be given by ]\Ir. Norman. 



