122 PERCY SLADEN TRUST EXPEDITION 



4. Eucopia sculpticauda, Faxon. 



E. sculpticauda, Faxon, 1895. 

 E. sculpticauda, Hansen, 1905 (l). 

 E. intermedia, Hansen, 1905 (1). 

 E. scidpticauda, Hansen, 1910. 



Station, aa, near Providence Island, 900 fms., one, 33 mm. 



Alcock has recorded E. sculpticauda from the Indian Ocean. This is the only 

 previous record for these vsraters known to me. 



Sub-order MYSIDA. 



Family Mysidse. 



Subfamily Siriellinse, Norman. 



Genus SiRiELLA, Dana. 



5. Siriella thompsoni (H. Milne-Edwards). 



Cynthia thompsoni, Milne-Ed., 1837. 

 Sinella thompsoni, Hansen, 1910. 



Station, n, north of the Saya de Malha banks, surface, three males, 6'5 — 8 mm., 

 one female, 4'5 mm. 



Hansen's paper, quoted above, should be consulted for the full synonymy of this 

 form. To the list of synonyms I would add S. edwardsi, Paulson = S. sim,ilis, 

 Czerniavsky. 



6. Siriella gi'acilis, Dana. 



S. gracilis, Dana, 1852. 

 S. gracilis, Sars, 1885. 

 S. gracilis, Hansen, 1910. 



Stations. Q, Chagos Archipelago, surface, one female, 2 mm. ; n, north of Saya de 

 Malha banks, surface, five males, 7 mm., and one female, 4 mm.; dd, Alphonse Island, 

 surface, one male, 7 mm. 



7. Siriella cBquiremis, Hansen, ?. 



S. cBquirem,is, Hansen, 1910. 



Statio7is. Q, Chagos Archipelago, surface, four females, 4 — 7 mm. ; oo, Amirante 

 Islands, surface, one female, 5 mm. 



Hansen [loc. cit.) has described from the collections made by the Siboga expedition, 

 no fewer than thirteen new species of the genus Siriella and has revised the genus on 

 a sound basis. Unfortunately, however, species can only be satisfactorily determined 

 from male specimens. As the material of the present species is represented by female 

 specimens only, I am somewhat doubtful as to its correct determination, but from the 

 general structure it seems to agree with S. cequiremis. Before receiving Hansen's paper 



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