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Euchirella o-aleala has a similar distribution to Euchirella curticaudd, and has been 

 obtained from the deep water of the Faröe Channel. 



5. Euchirella messinensis (Claus). 



Undina messinensis Claus, 1863, p. 187, pi. XXXI. 



Euchirella messinensis Giesbrecht, 1893, p. 232, pis. 15 & 36. 



Euchirella messinensis Canu, 1896, p. 424. 



Euchirella messinensis Giesbrecht & Schmeil, 1898, p. 35. 



Euchirella messinensis Giesbrecht, 1903, p. 201. 



Euchirella messinensis Thompson & Scott, 1903, p. 244. 



Euchirella messinensis Cleve, 1904, p. 190. 



Euchirella messinensis Sars, 1905 (a), p. 4. 



Euchirella messinensis Esterly, 1905, p. 151, fig. 18. 



Euchirella messinensis Farran, 1908, p. 37. 



Nine females and six males of this Euchirella were found in plankton collected at the 



following stations. 



Stat. 118 (HENSEN vertical net 900 metres to surface), 1 specimen. — Stat. 133, 1 specimen. — 

 Stat. 141 (HENSEN vertical net 1500 metres to surface), 2 specimens. — Stat. 143 (HENSEN 

 vertical net 1000 metres to surface), 2 specimens. — Stat. 185 (HENSEN vertical net 1536 

 metres to surface), 2 specimens. — Stat. 203 (HENSEN vertical net 1500 metres to surface), 

 3 specimens. — Stat. 243 (HENSEN vertical net 1000 metres to surface), 3 specimens. — 

 Stat. 276. — (HENSEN vertical net 750 metres to surface), 1 specimen. 



The females of this species have a rostrum but no crest. The genital segment is asym- 

 metrical, and has a peculiar sack-like projection on the dorsal surface. The inner margin of 

 the first joint of the basiopodite of the fourth pair of feet is furnished with one or two teeth. 



Euchirella messinensis has been recorded from the Mediterranean, North Atlantic and 

 Pacific Oceans. 



6. Euchirella pulchra (Lubbock). 



Undina pulchra Lubbock, 1S56, pp. 2 & 20, pis. IV & VII. 

 Euchaeta pulchra Brady, 1883, (pars) p. 63, pi. XX. 

 Euchirella pulchra Giesbrecht, 1893, p. 233, pis. 15 & 36. 

 Euchaeta pulchra T. Scott, 1893, p. 57. 

 Euchirella pulchra Giesbrecht & Schmeil, 1898, p. 36 

 Euchirella pulchra I. C. Thompson, 1903, p. 17. 

 Euchirella pulchra Sars, 1905 (#), p. 4. 

 Euchirella pulchra Esterly, 1905, p. 153, fig. 20. 

 Euchirella pulchra van Breemen, 1908, p. 47, fig. 53. 



This Euchirella was represented by twenty-eight females, and nine males, obtained trom 

 the plankton collected at the following stations. 



Stat. 117% 1 specimen. — Stat. 118 (HENSEN vertical net 900 metres to surface), 4 speci- 

 mens. ■ — Stat. 141 (HENSEN vertical net 1500 metres to surface), 4 specimens. — Stat. 142, 

 5 specimens. — Stat. 143 (HENSEN vertical net 1000 metres to surface), 4 specimens. - 

 Stat. 185 (HENSEN vertical net 1536 metres to surface), 2 specimens. — Stat. 203 (HENSEN 

 vertical net 1500 metres to surface), 6 specimens. — Stat. 243 (HENSEN vertical net 1000 

 metres to surface), 4 specimens. — Stat. 276 (HENSEN vertical net 750 metres to surface), 

 2 specimens. 



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