niATOMAC.K^-: — CIC/V.TOC.KROS 'i>\ 1 



CHi^TOCEROS SOCIALIS L\i dkh. 

 iCi,. Bih. K. Sv. Vel. Akacl. Ilandl. Vol. XXII 3 ii. 5- PI. II i\g. 9.) 



ISltS April: Fiiroes. 



June: S. of Iceland, coiiiinon. 



./«///; W. of Iceland. 

 ISK'J -ful;!: 74-' N. 20 W., (-(MiiiiKm. 



Temperature: <>.i to ',». 



Salinity: HI.-' to Ho.u. 



Plankton-type. '\'\\\^ species is an arctic, nerititt form, noted 

 from llaft'in s Itay. I have met with it in a collection from Puyet's 

 Sound. Noted also from lIongkon<>;. It occurs, in the winter, ahun- 

 (liinllv in the Skajserak. — A//. 



CHy^TOCEROS (BOREALIS VAR.) SOLITARIA Cl. 



(Fifleentl) annual reporl of ttie Fishery Hoard for Scotland, for 1896 pag. 298.1 



1898 March: 40^—41" N. 69-— 70 \V. 

 June: 65' N. 31^ W. 

 j^ily: 61^—62° N. 4' W. 

 August: 65' N. 12 \V.; 7(5 N. U^ K. 



Temperature: 7.-,, mean of 8 obs., max. 11, min. 5..-,. 



Salinity: :)4.:i.-.. mean of 8 ohs., max. 35.34, min. 32. 4i. 



Plankton-type. The observations are too few for deciding the 

 plankton-ly|.e to which this form really belongs. It has been found 

 both i Stvli-, Tricho- and Cha^to-plankton. 



CH^ETOCERGS TERES Cl.^ 



(Hill. Sv. Vel. Akad. liaiull. Vol. XXII: H n. h lig. 7.; 



18'.)8 March: S. of Iceland; Faroes; \V. of Norway. 58^ N. 6 K. 

 Aj>ri/: S. of Iceland; 43' N. 50' W. 

 May: Faroes; «)1- N. 1" W. 

 Jane: Faroes; 58' N. 2 W.; 71 N. 23 K. 

 ■faly: ()3 N. 14 W.; conunon; Fiirries, not rare. 



Ostenfoid's data used. 



