162 Rev. Canon A. M. Norman on British Mysidaj. 



Distribution. I have dredged it at Solems Fiord, Floro, 

 Norway, in 5 fath. Professor G. O. Sars has recorded it 

 from Eomsdals, Christiania, and Hardanger Fiords, in 5-12 

 fath. ; and also in the Mediterranean at Messina and Naples. 



3. Erythrops serrata, G. 0. Sars. (PI. X. fig. 11.) 



1863. Nematopus serratus, G. O. Sars, Beret, om en i Somm. 1862 

 foretagen Zool. Reise i Christianias ogTrondhjems Stifter, p. 43. 



3869. Nematopus serratusj'^ovmim, " Last Report Dredging Shetland 

 Isles,'- Brit. Assoc. Rep. for 1868, p. 270. 



1870. Erythrops serrata, G. 0. Sars, Carcinol. Bidrag til Norges Fauna, 

 I. Monogr. Mysider, p. 27, pi. ii. figs. 1-12. 



1883. Erythrops serrata, Czerniavsky, I. c. fasc. iii. pp. 16, 18. 



Form less slender than that of E. Go'esii', cephalothorax 

 rather wider than pleon, on the ventral surface of each of its 

 segments a shortly stalked rounded boss, beset thickly with 

 strong spine-points ; colour white, with a reddish spot on 

 each side of each segment of pleon, and a band across the 

 fourth, sometimes also a longitudinal line on each side 

 of cephalothorax ; the very large reniform eyes are of a lovely 

 and brilliant ruby-red. Rostrum obscure, scarcely developed. 

 Eyes almost as in E. Go'esii. Anten7ial scales narrowly 

 linear, about one fourth longer than peduncle of antennules ; 

 length nearly five times that of breadth ; external margin 

 having the distal two thirds deeply serrated, or cut into 7-9 

 large spine-like processes, the most distal of which overlaps 

 the extremity of the scale. Legs very long, the hinder pairs 

 rapidly increasing in length, and the last when bent backwards 

 reaching the basal portion of the telson ; carpus shorter than 

 the more distal portion of the limb ; the succeeding articulation 

 twice as long as the combined length of the two which pre- 

 cede the nail. Telson in form as in the other species, but the 

 lateral margins slightly concave ; the termination truncated 

 in a straight line, the four terminal spines subequal in the 

 female, but the outer pair one third shorter than the inner in the 

 male. Inner uropods having the inner margin minutely 

 serrulated throughout. Length 10-11 millim. 



Hah. Dredged on a muddy bottom in 40-60 fath. in 

 St. Magnus Bay, Shetland, 1867; and in 1870 in 80-100 

 fath. off Valentia, Ireland {A. M. N.) ; Moray Firth and 

 Firth of Forth (2'. Scott) : Mus. Nor. 



Distribution. Professor G. O. Sars has dredged this species 

 in the Christiania and Hardanger Fiords, at Christiansund, 

 and among the Lofoten Islands, in depths ranging from 30- 

 150 fath. ; and I have myself taken it off Sponholmene in 

 the Hardanger Fiord, in 100 fath. Denmark {Meinert). 



