90 CH^TOGNATA — KROHNIA, SAGITTA 



Clisetogiiata. ^ 



KROHNIA HAMATA (Moeb.) 

 (StrodtiMann : D. Systematik d. Chaetognaten, 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: ir-'—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" ^\. (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" W. 



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



^ See Steinhaus, D. Verbr. d. Chaetognoten Kiel 1896 8°, a paper, with which 

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



