205 Canon A. M. Norman on British Amphipoda. 



18 fathoms" (D. R.). These are the specimens which were 

 recorded in Dr. Robertson's first paper as " Anonyx serratusy 

 This is the only record of the species as British. 



Distrih. Trondhjem Fiord, Norway {A. M. N.) ; Malangen 

 Fiord, West Finmark (/. S. Schneider) : Mus. Nor. Siberian 

 Polar Sea (Stuxberg). 



Genus 16. Tryphosella, J. Bonnier. 

 = Tryphosa, G. 0. Sars (non Trtjphosa, Boeck, typica). 



36. Tryphosella Sarsi, J. Bonnier. 



1891. Tryphosa nana, G. 0. Sars (not Anonyx nanus, Kr.), (142) p. 70, 



pi. xxvii. fig. 1. 

 1893. Tryphosella Sarsi, J. Bonnier, I. c. p. 170, note. 



Hah. Bressay Sound, Shetland; mouth of the Yealm, near 

 Plymouth ; Clew Bay, Co. Mayo {A. M. N.) : Mus. Nor. 

 Puffin Island, North Wales, Menai Strait, and Jersey 

 {A. 0. W.) ; Upper Loch Fyne {T. S.). 



Distrib. South and west coasts of Norway {Sars). 



37. Tryphosella Horingii (Boeck). 



1870. Tryphosa Horingii, Boeck, (137) p. 38. 



1876. Tryphosa Horingii, Boeck, (138) p. 182, pi. iv. fig. 4. 



1891. Tryphosa Horringii, G. O. Sars, (142) p. 77, pi. xxvii. fig. 2. 



1893. Tryphosella Horringii, J. Bonnier, /. c. p. 171. 



Hab. It has been recorded from the ambulacral grooves 

 of starfish. Bull Bay, Anglesey [A. 0. W.) ; Loch Linnhe 

 {G. Brooh) ; Firth of Forth (T. S.). 



Distrib. Trondhjem Fiord, Norway, 150 fathoms {A.M. N.) ; 

 Denmark {Copenhagen Mus.) : Mus. Nor. Sars speaks of it 

 as found in Norway and up to Lofoten generally in the region 

 of deep-sea corals in 50-150 fathoms. Bohuslan, Sweden 

 {Gunhilds Expedition^ fide Sars). 



[Tryphosella ahyssi, sp. n. (PI. VI. figs. 16-20.) 



Afale. — In describing this form I shall take advantage of 

 the figures on Sars's pis. xxvii. and xxviii. for illustrations of 

 characters. Cephalon with lateral corners produced and acute 

 (as in Tryphosites) (fig. 16). Coxte of fourth segment of 

 niesosome (fig. 17) with the posterior projection completely 

 rounded above and below, those of fifth pair (fig. 18) as broad 

 as deep ; these characters as in T. Sarsi ; epimera of third 

 segment of metasome with the hinder corner well roiinded 

 (fig. 19), without any indication of an angle. First segment 



