﻿CUI'KPODA 



107 



Distribution. About this species Farrau writes (190S p. 361 "this species is a very noticeable 

 feature in tlie deep-water fauna off the west coast of Ireland, occurring often in considerable numbers, 

 in almost ever\' tow-net from 200 to 11 50 fathoms". 



The gatherings of the Thor seem to show that it is much more abundant south of 60° I^. N. 

 even if it is found in Denmark vStrait as far nortii as 65° L. N. By Wolfenden it has been 

 recorded from the South Atlantic, and it was found by the Monaco Expedition, as well as at 5 stations 

 from the deep water of the Malay Achipelago (5 females only). 



Remarks. Though I have not seen Farran's original description, I am quite sure that my 

 species is identical with his G. pilcafus and different from Canu's G. raiidaj/i (\l this author has not 

 examined an abnormal specimen). As I have examined specimens determined by Sars as G.caudafii, 

 no doubts exist 'about its identification with the Monaco's species; and the same is the case with 

 Wolfeuden's species, from the South Atlantic. As the lamina of the maxillipeds (PI. VIII fig. 13) 

 was differently shaped in the Siboga specimens (length 57 n""-). I ^"i not quite convinced of Scott's 

 identification. Scott regards Esterly's G. tin icon/ is as identical with his G. caiiif(iii/\ which he 

 regards as the synonym of G. p/lcahis, but he is scarcely right, as the lamina of the maxillipeds 

 has quite another shape in Esterly's species (1906 PI. XII fig. 54). 



28. Gaetanus miles Giesbrecht. 

 (PI. Ill figs 7 a— b). 



18SS. Gaetanus miles n. sp. Giesbrecht, p. 335 I 1905. Gaetanus miles Giesbr. G. O. Sars, p. 3. 



1893. — -- Giesbr. Giesbrecht, p. 219, taf. 14&36. 



1S95. — — — Giesbrecht, p. 248. 



1S9S. — — — Giesbrecht & Schmeil, p. 32. 



1903. — — — Norman, p. 136. 



1903. — — — J. C. Thonisen, p. 17. 



1904. — — — Cleve, p. 191. 



1906. — — — Pearson, p. 14. 



1 90S. — — — Tarran, p. 36. 



1908. — — — V. Bremen, p. 39, fijj. 42. 



1909. — — — .\. Scott, pp. 44— 45, pi. VIU figs 



i-S 

 1913. — — — WoLfenden, p. 231. 



Description. f$. Size of specimen from Thor St. 82 was 4-21 mm.; anterior division 3-4. urosome 



o-8i mm. Giesbrecht's specimen measured 3-5, Scott's 4-3 and Wolfeuden's 3 nun. 



The shape of the body is scarcely different from Giesbrecht's figure; the anterior di\ision 

 is 4-2 as long as the urosome, which has the relative length of the somites antl furcal rami as 

 follows: 34. 13, II, II, 15; the furcal rami are 1-3 as long as wide. The ^?//A7//////(/(- differ from those of 

 Giesbrecht's specimen by the proportional length of the .segments; the segment 19 is a little longer 

 than 22, which is the longest according to Giesbrecht, and this again is a little longer than 

 20; the .segments 8~9, 13 and 240^25 are in G. u/i/ix of ahnost e(ituil length, l)ut in my specimens 

 segment 13 is I'l as long as ^'>i() and 1-2 as long as 24 "^ 25. The mouth-appendages, with the excep- 

 tion of the iiinxillipcds^ are scarcely different from those of G. miles; in this pair of appendages the 

 third ba.sipodite is 3 times as long as the endopodite, and 1-3 as long as the Hasp. I- -II; the plate- 

 sliaped process of the exterior surface of the second ba.sipodite is rounded and almost semicircular 

 (fig. 7 a), and distinctly different from Gr iesbrech t's fig. 24. Taf 14. In the first pair of legs the 

 articular line between Re I — II was .scarcely indicated; the Ri of the .second pair of legs has the 

 articulation between Ri I— II fairly distinct anteriorly, and scarcely indicated posteriorly; the second basi- 



14* 



