220 BIOLOGICAL SURVEY OF 



G. 0. Bars 

 Calanidae Calanidae 



Eucalanidae Eucalanidae 



Paracalanidae 

 Pseudocalanidae Pseiidocalanidae 



Aetideidae 



Euchaetodae 



Phaennidae 



Scolecithricidae 

 Platycopiidae Platycopiidae Sars 1911 



Key to the families of Amphascandria 



1 Inner ramus of first leg 3-segmented Calanidae 



This ramus 1-segmented 2 



2 Inner ramus of second leg 3-segmented ... 3 



This ramus 1-2-segmented Pseudocalanidae 



3 Pelagic forms with normal legs Eucalanidae 



Benthonic forms with the rami of the legs 



broadened and the setae largely replaced 



by spines Platycopiidae 



Calanidae 

 Calanus Leach 



C. FiNMARCHicus (Gunuerus). (G. 0. Sars, 1901, p. 9, pis. 

 1-3.) Probably wanting in the inner Bay. Taken in surface 

 tow at D 104. 



Pseudocalanidae 



PsEUDOCALANUs Boeck 

 p. ELONGATus (Boeck). (G. 0. Sars, 1901, p. 20, pis. 10, 11.) 

 Taken in plankton at the surface. Stations : P 5, 6, 10, 11. 



Subtribe HETERARTHRANDRIA 



In this subtribe also it is necessary to reduce the number 

 of families very much from that given by G. 0. Sars, 1902, 

 1903). 



