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31. Euchirella rostrata Claus. 

 (PL IV figs I a— li; text-figs 29 a— k).' 



1S66. Undina rostrata n. sp. Claus, p. 11, taf. I ii^. 2. 

 1883.? Eiichitte hessii u. sp. Brady, p. 63, pi. XX figs i — 13. 

 1892. Euchirella rostrata Claus. Giesbrecht, p. 232, taf. 15. 



? 



1898. 



1900, 



1902.? — 



1903. Nee. — 



1903. — 



1903. — 



1904. — 



Giesbrecht & Schnieil, p. 36. 

 Cleve, p. 4, pi. 2 figs i — 12. 

 Wolfenden, p. 367. 

 Thompson & Scott, p. 244. 

 Norman, p. 137. 

 J. C. Thompson, p. 18. 

 Wolfenden, p. 129. 



1905. Euchirella rostrata Claus. G. O Sars, p. 4. 

 i9"5- — — — Th. Scott, p. 223. 



1905. — — — Esterly, pp. 152 153. 



1905. Nee. — — var.maKn a Wolfenden, p. 18. 



1905- 

 1 906. 

 190S. 

 1 90S 

 igr I. 

 1912. 



Farran, p. 36. 

 Pearson, p. 15. 

 Earran, p. 38. 

 V. Bremen, p. 47, fig. 52. 

 Wolfenden, p. 235. 

 Ksterly, p. 311. 



Description. f$. Size: Specimen from Ingolf St. 19 meastired 4-07 mm. ; anterior division 3-26; 

 nrosome o-8i mm. Tlie size of specimens from other stations varied from 3-25 — 4-2 mm. (liesbrech t's 

 specimens measnred 2'95— 3'i mm., Farrans 1,-t, — 4-2 and Wolfendens from 2—3 mm. 



Text-fig. 29. Encknclla rostrata Claus. 



a. f^. Abdomen > 45, b. fc?. Rostrum X 45- *-"• fo'- Abdomen >, 45. d. f cf. Tips of pes V from the right X 150. 



e. ycT (St. V). Abdomen > 45. f. yd (St. V) Pes V > 60. g. yd" (St. IV) Pes V X 60. h. fC- Body X 33. 



i-j- vQ-d" (St, V) X 3.V k. i(S :■.:■,?>■ 



The long and pointed rostrum is more vertical and the head is much more suddenly raised 

 than seen in Giesbrecht's fig. 23 (Taf. 36) (text-fig. 29 h). The genital somite has tlie ventral pro- 

 tidDerauce more regularly raised, especialh* behind, than shown in (t iesbr cch t's fig. 17 (text-fig. 29a). 



The niitciumlar differ from (ri esbr ech t ' s description by the comparatively longer segment 

 2, which is almost as long as .segments 8^9. The inaxillnlar differ from Giesbrecht's description 

 (fig. 28) by one instead of 2 delicate Sa in Li 2, and b\- the presence of a posterior process bearing two 

 rudimentary .setae (?) on the Ivi 3 in addition to the two well developed Sa. Tlie sensory conical process 

 of Lob. IV of the second basipodite of the maxillipeds is rather small. 



The prs I is completely like Oiesbrech's fig. 11 (Taf. 15); the Re III has a minute pore in 

 the outer margin, .somewhat posteriorly, and nearer the base than the tip. The prs II. which has 22 teeth 

 in the terminal setae, has the systems of glands of the Re well developed, in a similar way as figured 



■11k- liigolf-lixiK-iiiii.iii. III. 1 ^S 



