1897.] ON THE PLANKTON OF THE FAEROE CHANNEL. 523 



2. Contributions to our Knowledge of the Plankton of the 

 Faeroe Channel. No. II. By G. HERBERT FOWLER, 



B.A., Ph.D v Assistant Professor of Zoology, University 

 College, London. 



[Eeceived March 29, 1897.] 



The following notes form a continuation of the previous paper 

 on this subject (see P. Z. S. 1896, p. 991) : 



CoNCH(ECiA MAXIMA (Brady & Norman). 



Twenty-five specimens, apparently referable to this Ostracod, 

 were obtained in deep-water hauls. It occurred in three hauls 

 at depths between 480 and 220 fathoms, and in three hauls which 

 began at depths greater than 300 fathoms and were finished at the 

 surface ; it did not occur in a single one of the twenty-two surface 

 hauls (100 fathoms or less, to the surface). 



The only other occurrences of this species are recorded by Brady 

 and Norman l as " off Greenland in lat. 74 49' N., long. 11*30' W., 

 in a depth of 350 fathoms, and by H.M.S. 'Triton' in 1882, 

 lat. 60 20' N., long. 7 23' W., in 200 fathoms, cold area, Faroe 

 Channel." Mr. John Murray, who supplied these specimens to 

 Mr. Brady and Canon Norman, has kindly informed me that the 

 Greenland specimens "were brought home by Mr. Gray in a 

 Peterhead whaler a few years ago." 



So far as the three records go, there can be little doubt that in 

 Conchoecia maxima we have a true member of the cold Mesoplank- 

 tonic fauna. The lowest depth and temperatures at which it was 

 captured on the ' Research ' were 2 : 



Sta. I3g. 465 to 335 fathoms ; temp. 31 to 33 Fahr. 



Sta. 19 a. 480 to 350 fathoms ; temp. 46 to 47 Fahr. 



TOMOPTERIS ONISCIFORMIS, Eschscholtz. 



Vejdovsk^ 3 recognizes three European species of Tomopteris : 

 onisciformis (Eschscholtz 4 ), vitrina (Vejdovsk^ 3 ), and scolopendra 

 (Keferstein 5 ). His diagnostic characters, however, seem quite 

 inadequate for sharp distinction, and fall in all probability within 

 the limits of individual variation, excepting in the case of the 

 " Flossenaugen," the remarkable structures which have been 

 variously interpreted as eyes or as phosphorescent organs. 

 According to Yejdovsk^ these are arranged as follows : 

 Vitrina, Vej. One on the notopodium, one on the neuropodium; 

 pigment yellow ; one lens. 



1 Sci. Trans. Eoy. Dublin Society, (ii.) v. 687, pi. Ixi. figs. 1-8. 



2 Of. Proo. Zool. Soc. 1896, p. 993 note. 



3 Zeitschrift wiss. Zoologie, xxxi. p. 81. 



4 Isis, 1825, p. 735. 



5 Arch. Anat. Physiol., 1861, p. 360, 



