876 MRS. E. AV. SEXTOX ON AMPUIPODA [NoV. 23, 



carries a row of 25 delicate plumose hairs along the outer mnxgin ; 

 on the 2nd pleopod the hairs are smaller and fewer in number. 

 In the full-grown female the outer ramus has 20 joints, the inner 

 17 ; 4 cleft spines on the 1st pleopod, 3 on 2nd and 3rd. 



In the young in the incubatory pouch the outer ramus has 

 4 joints, 1 large and 3 small; the inner ramus, 3 joints, with 

 1 cleft spine on the 1st. The coupling-spines have the two large 

 upper teeth, but none of the small ones. 



Uropods and telson. — In the female the proportions are as in 

 Sars' figure. The young male has the inner ramus of the 2nd 

 uropod half as long again as the outer ; all the mai^gins pectinate. 

 The telson in the female is cleft for half its length, in the young 

 in the pouch, and in the young males, 8-10 mm., to rather more 

 than half the length. It carries proximally a pair of large, 

 mobile, ciliated hairs, as do most of the Jihachotropis ; another 

 much smaller pair near the cleft ; a submarginal irregular row of 

 sensory spinules ; and a setule inset in either apex. Both pairs 

 of ciliated hairs, and the apical setules are to be found in the 

 young in the pouch. 



Distribuiiou. Kara Sea. Stebbing (38), p. 38. 

 North Atlantic. Stebbing (37), p. 955. 

 Norway, S. and W. coasts, 50-100 fathoms. Sars (29), 



p. 427. 

 Ireland : " Common on the Atlantic slope off the West Coast 

 of Ireland, at depths from 200-400 fathoms." (Mr. Tatter- 

 sall, in a letter dated 31.x. 08.) 

 Bay of Biscay : Taken by the ' Huxley ' at Station XII., 

 48° 7i' N., 8° 13' W., August 26, 1908, in 246 fathoms; 

 bottom deposit, fine sand. 

 Other localities doubtful. 



Bibliography/, 



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Kyster forekommel^de Amphipoder." Foi-handl. Skaud. 

 Naturf., 8*'^ mipde. Kjobenhavn, 1860. 



2. BoECK, Axel. — " Crustacea Amphipoda borealia et arctica. " 



Vidensk.-Selsk. Forhandlinger, 1870. 



3. ]>OBCK, Axel. — De Skandinaviske og Arktiske Amphipoder. 



Christiania, 1876. 



4. Bonnier, Jules. — " Edriophthalmes" : Kes. Scient. Camp. 



' Caudan.' Ann. Univ. Lyon, 1896. 



5. Boulenger, C. L. — " On the Hermaphroditism of the 



Amphipod, Orchestia deshayesii Audouin." Proc. Zool. Soc. 



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 3. Bourne, G. C— " Report of a Trawling Cruise in H.M.S. 



' Research' off" the S.W. Coast of Ireland." Journ. Marine 



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 7. Bruzelius, R. M. — Bidrag till Kiinnedomen om Skandi- 



naviens Amphipoda Gammaridea. Lund, 1859. 



