264 Miss D. A. Stewart on the Extra- Antarctic 



they are a feature which might have materially assisted in 

 the identification. 



The only other known species possessing a serrated ros- 

 trum is S. challengeri, Stebbing (1888), but the form of the 

 urosome in the ' Discovery ' specimen is totally different 

 from that of the former, the last ural segment being approxi- 

 mately equal in length to the telson, whereas that of 

 S. challengeri is only half as long as the telson. 



On the whole, the specimen is far more in agreement with 

 S. washingtoni than with either of the other forms, and I am 

 inclined to regard it as representing that species. 



Distribution. The Mediterranean (Senna). 



Genus DORYCEPHALUS, Bovallius. 



Dorycrphalus lindstromi, Bovallius. 



Le-ptocotis lindstroemi, Bovallius, 1887 (i). 

 Dorycephalus lindstroemi, Bovallius, 1890. 



Locality. Lat. 19° 13' S., long. 39° 35' W., Sept. 12th, 

 1901, one male, 10'5 mm. 



Distribution. Subtropical region of the Atlantic (Bo- 

 vallius) ; the North Atlantic {Chevreux), 



Bibliography. 



(i) Bate and Westwood. 1863-8. History of British Sessile-eyed 

 Crustacea, vol. ii. 



(2) Bovallius, C. 1885. "On some Forgotten Genera among the 



Amphipodous Crustacea.'' Bih. Kongl. Svensk. Vet.-Akad. 

 Hand!., vol. x., no. 14. 



(3) . 1887 (1). "Systematical List of Amphipoda Hyperiidea." 



Bih. Kongl. Svensk, Vet.-Akad. Handl., vol. xi , no. 16. 



(4) . 1887 (2). " Contributions to a Monograph of the Amphi- 

 poda Hyperiidea, Part I." Kongl. Svensk. Vet.-Akad. Handl., 

 vol. xxi., no. 5. 



(5) . 1889. " Contributions to a Monograph of the Amphipoda 



Hyperiidea, Part II." Kongl. Svensk. Vet.-Akad. Hand]., 

 vol. xxii., no. 7. 



(6) . 1890. " The Oxycephalic^." Nov. Act. Reg. Soc. Upsala, 



iii. 



(7) Chevreux, Ed. 1900. "Amphipodes de THirondelle,"' Result. 



Camp. Scient. Monaco, fasc. xvi. 



(8) . 1913. " Sur quelques inttSressantes especes dAmphipodes 



provenant des parages de Monaco et des peches pelagiques de la 

 ' Princesse-Alice ' et de ' THirondelle II.' en M£diterrane*e." Bull, 

 de l'lnstitut Oc6anographique, no. 262. 



(9) Claus, C. 1879. "Die Gattungen und Arten der Platysceliden.'' 



Arbeit, des Zool. Inst, zu Wien, vol. ii. 



(10) . 1887. ' Die Platysceliden.' 



(11) Marion, A. F. 1874. " A nimaux*inferieurs du Golfe de Marseille." 



Annalcs des Sciences naturelles, s£r. vi., torn. i. 



