XII 



Lilljeborgi, G. O. Sars. 

 macturoides, Lilljeborg. 

 mac rums, G. O. Sars. 

 Platycyclops, G. O. Sars. 

 phaleratus, Koch. 

 affinis, G. O. Sars. 

 fimbriatus, Fischer. 



Siphonostoma. 

 Ascomyzontidae. 



Ascomyzon, Thorell. 



asterocheres, Boeck. 



Lilljeborgi, Thorell. 



Boecki, Brady. 



simulans, Scott. 



latum, Brady. 



parvum, Giesbrecht. 

 Echinocheres, Glaus. 



violaceus, Glaus. 

 Dermatomyzon, Glaus. 



nigripes, Brady. 

 Rhynchomyzon, Giesbr. 



purpurocinctiim, Scott. 



rubrovittatum, G. O. Sars. 

 Collocheres, Canu. 



gracilicaada, Brady. 

 Mesocheres, Norm. & Scott. 



anglicus, Norm. & Scott. 

 Leptomyzon, G. O. Sars. 



elegans, A. Scott. 

 Scottocheres, Giesbrecht. 



elongatus, Scott. 

 Scottomyzon, Giesbr. 



gibberum, Scott. 



Acontiophoridae. 



Acontiophorus, Brady. 

 scutatus, Brady. 



Myzopontiidae. 



Myzopontius, Giesbr. 



pungens, Giesbr. 

 Neopontius, Scott. 



angularis, Scott. 



Dyspontiidae. 



Dyspontius, Thorell. 



striatus, Thorell. 

 Cryptopontius, Giesbr. 



brevifurcatus, Giesbr. 

 Arctopontius, G. O. Sars. 



expansus, G. O. Sars. 

 Bradypontius, Giesbr. 



magnieeps, Brady. 



papillatus, Scott. 



major, G. O. Sars. 



caudatus, G. O. Sars. 

 Cribropontius, Giesbrecht. 



Normani, Brady. 



Artotrogidae. 



Artotrogus, Boeck. 



orbicularis, Boeck. 



Cancerillidae. 



Parartotrogus, Scott. 



arcticus, Scott. 

 Cancerilla, Dalyell. 



tubulata, Dalyell. 



Poecilostoma, 

 Clausidiidae. 



Hemicyclops, Boeck. 



pwpureus, Boeck. 

 Hippomolgus, G. O. Sars. 



furcifer, G. O. Sars, 



