1902J 



The Holothnrioidea of jSTorthern Xorwav 



Kirk Fiord, 67058.5' K 



Vs 1899 



50 m. 



H- 2..50 C. 



Oxsund, 68° N 



1-/2 1899 



600 m. 



+ 6.30 C. ■ 



Tranodybet, 68O12' K . 



173 1899 



607—640 m. 



-\- 6.30 c. 



Brettesnes, 68^12' K. . 



1V2 1899 



350—400 m. 



+ 6.30 c. 



MalangenFiord, 69^30'^ 



1^4 1899 



100—200 m. 



+ 3.70 c. 



Lyngen Fiord, 69^37' N. 



Vs 1899 



250 m. 



-h 2.85° C. 



Kvænangen Fiord, f 



^74 1899 



90 m. 



-f 0.7500. 



about 70° ^^ \ 



274 1899 



300—343 m. 



+ 2.30 c. 



Jokel Fiord, 70^5' N. . 



-74 1899 



100 m. 



+ 1° c. 



The iirst eiglit of the places above mentioned are situated in 

 the West Fiord, or neighbouring fiords and straits. The shallow 

 water cools very much during the winter (at Kirk Fiord at a 

 depth of 50 m. -|- 2.5^ C), but at a great depth the tempera- 

 ture exceeds -|- 6° C. In the four fiords north of 69^ N. the 

 temperature at the bottom is much lower. As we shall find, 

 these differences of temperature have a parallel in the differences 

 in animal hfe. 



1. Stichopus tremulus (Gunnerus). 



Salten Fiord 67^ 14.5' N., 5/^ 1900, 320—380 m., clay, -|- 6.650 C. 

 Landegode 67^ 22' N., ^o/g 1900, 300—400 m., clay. + 6.20 c. 

 Bålstad 680 x., 26/3 1900, 150 m. 

 Bålstad, ^^4 1897, in the stomacli of God {Gadus callarias). 



All these places belong to the region, where the bottomtempera- 

 ture of the great er depths never falls below -f 6° C. Still this 

 species will be met with in regions of lower bottomtemperature. 

 The specimen without calcareous bodies in the skin, which M. 

 Såes (1861) describes under the name of Holothuria ecalcarea, had 

 been caught in Ox Fiord 70° 10' N., and in Christiania museum 

 there is a specimen, which G. 0. Såes caught in the Varanger 

 Fiord. Thus Stichojms tremulus is still to be found in East Fin- 

 mark, wherefore it is not unlikely, that Holothuria calcarea Jak- 

 ZYNSKT (Wagnee 1885, p. 171) from the Murman Coast is identi- 

 cal with the species in question. The specimen from the Varanger 

 Fiord is uncommonly big, wherefore its pedicels and papillæ are 



