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The Amphipoda collected by the ** Huxley" from the 

 North Side of the Bay of Biscay in August, 1906. 



By 

 E. W. Sexton. 



WITH PLATE III. 



The Amphipoda dealt with in this paper were collected in August, 

 1906, by Dr. Allen, to whom I am indebted for the opportunity of 

 examining them. 



The collection contained thirty-five species (belonging to twenty 

 families), of which one only, Tryphositcs allcni, is new to science. Five 

 others, Stenotlioe richardi, Syrrhoites walheri, Syrrhoe ajjinis, Eusirus 

 Mscaycnsis, and Rhacliotropis rostrata, are recorded for the first time 

 since their original discovery. The geographical range of five species 

 has been considerably extended, viz. Syrrhoe affiiiis, Tmctonyx similis, 

 Sympleustes glahcr, Ujjimeria parasitica, and Laetmatophilus tubcrcidatns ; 

 the four last forms have not been hitherto recorded with certainty 

 south of Norway. 



Several of the genera have been discussed separately in four papers 

 which I have published elsewhere [34-37]. 



The classification followed is that of Stebbing in his classical mono- 

 graph on the Amphipoda m Das Tierrcich. Previous records of the 

 capture of any species in the Bay of Biscay are given below the 

 account of the species. 



The measurements in all cases, unless otherwise stated, are taken 

 from the tip of the rostrum to the tip of the telson. 



Tribe GAMMAPJDEA. 



Fam. LYSIANASSIDAE. 



Gen. Trischizostoma, Boeck. 



Triscliizostoma nicasense (Costa). 



Station XII. One specimen, an ovigerous female, measuring 23 mm. For 

 synonymy and description, see Sexton (34). 



