40 Mindeskrift for J. Steenstrup. XXX. 



Brede Fjord thus forms in hydrographical regards a contrast to the above- 

 mentioned "cold" fjords; the reason for this must certainly be, that the mouth of 

 Brede Fjord is so deep, that it allows a direct inflow of the warm water-layers from 

 the Davis Strait, whilst the "cold" fjords in West Greenland are separated by 

 barriers from the warm water in the Davis Strait^). 



As main result of the above considerations we can thus state, that the distribu- 

 tion of the Selachians mentioned is not at all determined by the geographical latitude, 

 but is in the closest connection with the bottom-temperature. 



') For the hydrography of West Greenland cf. the preliminary report of the hydrographer 

 of the "Tjalfe" Expedition, Dr. J. N. Nielsen, pubhshed in: Beretninger og Kundgørelser ved- 

 rørende Kolonierne i Grønland, 1909, No. 2, pp. 24-27 and No. 6, pp. 34-38. 



