90 CH^TOGNATA — KROHNIA, SAGITTA 



CKaetognata. ^ 



KROHNIA HAMATA (Moeb.) 

 (Strodtmann: D. Systeinatik d. Chsetognaten, Berl. 1892, pag. 20). 



1898 July. 72° N. 1^ E. and 78° N. 1° E.— 3° W.; (deep sea hauls. 



Auriv.) 

 August: 54° N. 47° W.; 77°— 80° N. 12°— 10° E., (deep sea 



hauls. Auriv.). 

 September: 56° N. 27°— 36° W. 



1899 June: 67° N. 3° W., rare; 62°— 67° N. 0° 37' E.— 2° 52' W. 



from strata below 100 metres. 



July: 71°— 74° N. 21°— 18° W., hauls from 280 metres; 53° 

 N. 42° W., rare. 



September: 62°— 67° N. 0° 37' E.— 2° 55' W., (below 50 met- 

 res and a haul from 500 to 25 metres). 



Temperature: 10° to 11°. 



Salinity: 34° to 35°. 



Plankton-type. Noted from 51° S. 9° E. (depth 70 m.), the 

 S. Equatorial and Guinea Currents, the Sargasso Sea and Florida 

 Currents (deep water), Irminger sea and Baffin's Bay (Chun: D. Bezie- 

 hungen zwischen dem arctischen und antarct. Plankton. Stuttg. 

 1897). — T. 



SAGITTA ARCTICA Auriv. 

 (Plankton d. Baffins Bay u. Davis's Strait. Upsala 1896, pag. 188). 



1898 July: Spitzbergen; 78° N. 1° E.— 3° W. (deep sea haul. Auriv.) 

 August: 81° N. 23° E. (deep sea haul. Auriv.) 



September: 76° N. 15° E. (deep sea haul. Auriv.) 

 November: 60° N. 1° W. 



1899 March: 62° N. 7° AV. 



June: 65°— 67° N. 1°— 3° W., haul from 500 to 200 metres. 



^ See Steinhaus, D. Verbr. d. Ghsetognoten Kiel 1896 8*^, a paper, with which 

 1 became acquainted first when the above was in the press. 



