34 Canon A. M. Norman on British Amphipoda. 



84. Amphilochus tenuimanus, Boeck. 



1870. Amphilochus tenuimanus, Boeck, (137) p. 51. 



1876. Amphilochus tenuimanus, Boeck, (138) p. 437, pi. ix. fig. 7. 



1892. Amphilochus tenuimanus, G. O. Sars, (142) p. 218, pi. lxxv. fig. 1. 



Hob. Cumbrae (I). R.) ; Firth of Clyde {T. S.) ; off 

 Spurm Head, Yorkshire (T. S.). 



Distrib. Sars says that it is a deep-water form living in 

 100-200 fathoms, especially among deep-sea corals, and that 

 it is found in several places and West Norway. 



85. Amphilochus neapolitanus, Delia Valle. (PI. III. fig. 1.) 



1893. Amphilochus neapolitanus, Delia Valle, (139) p. 59-5, pi. xxix 

 fi<rs. 16, 17. 



1895. Amphilochus melaiiops, A. O. Walker, "Revision Amphipoda of 

 Liv. M. B. C. District," Trans. Liv. Biol. Assoc, vol. ix. p. 298, 

 pi. xviii. fig. 12, pi. xix. figs. 13-15. 



Nab. Off Little Ormes Head, Denbighshire, 5-7 fathoms 

 (A. O. W.) ; Falmouth Harbour ; Jersey, tide-marks 

 {A.M. N.) : Mus. Nor. Also Menai Strait, near Beaumaris, 

 5-10 fathoms {A. O. W.). 



Distrib. Naples (Bella Valle) : Mus. Nor. West France 

 (Chevreux) . 



Having compared typical specimens of A. melanops kindly 

 given me by Mr. Walker, and other British examples taken 

 by myself in the localities mentioned above, with a specimen 

 of A. neapolitanus received from Delia Valle, I am satisfied 

 as to their identity. A. neapolitanus and A. brunneus, both 

 described by Delia Valle, are very closely allied. Of the 

 latter I took several specimens at Naples in 1887, and thus 

 have had the opportunity of comparing the two forms. The 

 one point in which they are described by Delia Valle as 

 differing consists in the character of the gnathopods : those 

 of the second pair are very broad, triangular, and the carpal 

 process reaches to the extremity of the posterior margin of the 

 hand ; the armature of the palm and dactylus is exactly as 

 represented by Delia Valle in the allied species A. brunneus 

 (Delia Valle, pi. xxix. fig. 14), the palm being bounded by 

 two spines and its edge excessively finely denticulated, and 

 within the denticulations a row of small spiuules. 



Mr. Walker's fig. 14 gives the carpal process shorter than 

 in any specimen I have seen; but in A. brunneus it only 

 extends about half the length of the hand. The very close 

 resemblance of the species might raise a question in the mind 

 whether they are really distinct. In favour of their distinc- 

 tion is the fact that all the specimens I took at Naples agreed 



