1903.] PLAXKTON OF THE FAEROE CHANNEL. 121 



were captured by the ' Research ' in the Faeroe Channel ; they 

 are cited in the text by Roman numerals. 



CONCHCECIA MAXIMA Brady & Norman. 



As I have previously pointed out *, this species appears to be 

 purely mesoplanktonic, in the latitude at any rate of the Faeroe 

 Channel. It occurred in 50 per cent, of the mesoplankton hauls, 

 and in three hauls which began at or over 300 fathoms and finished 

 at the surface ; it was not captured once in hauls between 100 

 fathoms and the surface (cf. table, p. 118). The species was 

 fairly common. 



The record of previous captures was cited in the second paper of 

 this series \ and also indicated a mesoplanktonic habit in subarctic 

 regions, but it is not surprising that in yet colder waters it should 

 appear at the surface. At 84 32' N., 76 E., it was captured 

 with a surface-net by the ' Pram ' 2 , and is recorded as abundant in 

 most of the samples of Crustacea from this voyage 3 . 



CONCHCECIA HYALOPHYLLUM Claus. 



Twelve specimens in haul 13 i, 100 fathoms to surface. Five 

 specimens too small for satisfactory identification, but perhaps 

 referable to this species, occurred in hauls 20 c and 20 d. 



Claus 4 records as other occurrences Chun's haul IV., Ischia at 

 492 fathoms, Orotava at the surface. 



? CONCHCECIA PORRECTA Claus. 



Numerous specimens from 20 a bod and one from 13 i. Claus 

 (op. cit.) records it from Chun's hauls II., III., IV., VII. 



CONCHCECIA BOREALIS G. O. Sars. 



A single specimen in haul 19 a, 480 to 350 fathoms. Recorded 

 previously from 250 to 300 fathoms at the Lofoten Islands 5 , and 

 from Trondhjem Fjord at 150 fathoms 6 . This appears to be a 

 purely cold-water form. 



PARACONCHCECIA OBLONGA Claus. , 



Six specimens in haul 20 c, four in 20 d. Claus (op. cit. p. 64) 

 cites this species as from Chun's hauls III. and IV. ; and states 

 that it also occurs at the surface, but without giving authority or 

 details. He remarks on the probable identity of this species with 

 G. W. Miiller's variabilis 7 , a suggestion with which Miiller seems 

 to agree 8 . This would extend the distribution considerably, as 

 Miiller 7 records it, from the * Vettor Pisani ' collections of 



1 Proc. Zool. Soc. 1897, p. 523. 



2 F. Nanseu : Norwegian North Polar Expedition. G. 0. Sars : Crustacea, p. 11. 



3 Id. ibid. p. 137. 



4 C. Claus, op. cit. p. 61. 



5 G. O. Sars : Forh. Vid.-Selsk. Christiania (1865), vol. 1866, p. 120. 



6 G. S. Brady & A. M. Norman : Trans. Roy. Dublin Soc. (2) v. p. 686. 



7 G. W. Miller : " Ueber Halocypriden," Zool. Jahrb. Syst. v. p. 273. 



8 G. W. Miiller : ' Ostracoden des Golfes von Neapel,' p. 229. 



