TATTERSALL— MYSIDACEA AND EUPHAUSTACEA 133 



Stations. A, 50 fms., ten, 75fms., two, 125 fins., one; B, 50 fins., four; C, 1200 



fins., five; F, 150 fins., one; L, 50 fins., one; N, 600 — Ofms., seventeen; P, 20 fins., 



one; e, 300 fins., one, 400 fins., one; p, 200 fins., one, 400 fins., one, 500 fins., five, 600 fins., 

 six, 800 fins., two; q, 1000 — Ofins., seventeen; r, 500 — 250 fms., three ; s, 250 — Ofms., 

 nine, 750 — 500 fins., six; u, surface, three; v, surface, three; w, surface, one; aa, 

 900 — Ofms., three; bb, 140 — Ofms., two; kk, 250 fms., two, 300 fms., four; 11, 750 fms., 

 twelve ; mm, 400 fms., nine ; nn, 200 fins., ten. 



27. Nematoscelis gracilis, Hansen. 



N. gracilis, Hansen, 1910. 

 Stations. F, 50 fms., two; N, 600—0 fms., two; q, 1000—0 fms., five; s, 250—0 fms., 

 one, 750 — 500 fms., one ; aa, 900 — fins., three ; U, 750 fms., three ; mm, 400 fins., three. 



28. Nematoscelis tenella, G. O. Sars. 



N. tenella, G. O. Sars, 1883. 

 N. tenella, G. O. Sars, 1885. 

 N. tenella, Hansen, 1905. 

 N. tenella, Hansen, 1910. 



Stations. L, 50 fms., one; N, 600 — Ofms., three; O, 180 — Ofms., one; a, 50 fms., 

 six, 100 fms., one; p, 500 fms., one, 800 fms., three; q, 1000 — Ofms., three; r, 500 — 

 250 fms., one; s, 250 — Ofms., two, 750 — 500 fins., one; aa, 900 — Ofms., four; kk, 

 300 fins., two ; 11, 750 fms., two ; mm, 400 fms., one ; nn, 200 fms., eight. 



Genus Nematobrachion, Caiman. — ' 



29. Nematobrachion hoopis (Caiman). 



Nematodactylus hoopis, Caiman, ] 896. 

 Nematohiuchion hoopis. Caiman, 1905. 

 N. hoopis. Holt and Tattersall, 1905 and 1906. 

 N. hoopis, Hansen, 1905. 

 Stations. N, 600 — Ofms., one, 18 mm.; k, 300 fms., one, 9 mm.; kk, surface, one, 

 10 mm. 



30. Nematobrachion Jlexipes (Ortmann). 



Stylocheiron flexipes, Ortmann, 1893. 

 Nematodactylus jiexipjes, Caiman, 1896. 

 Nematobrac/iion Jlexipes, Hansen, 1905. 

 Stations, e, 400 fms., one, 11 mm. ; k, 250 fms., one, 9 mm. 



Caiman (1896) was the first to suggest that the Stylocheiron Jlexipes of Ortmann 

 should be referred to his genus Nematodactylus (since changed to Nematobrachion). 

 Hansen, in 1905, confirmed Caiman's suggestion after examining specimens in the 

 Copenhagen Museum. 



I am not aware of any records of this form subsequent to Ortmann's original ones 

 fi'om the northern part of the South Atlantic. The present records, therefore, indicate 

 a wide increase in its horizontal distribution and are the fii'st from the Pacific Ocean. 



