Acta Societatis pro Fauna et Flora Fennica, XVII, n:o 1. 53 



Fam. 3. Bosminidae. 



Bosmina longirostris Miiller, 

 forma vemalis n. f., 

 forma cornuta Jurine, 

 forma littoralis n., 

 » brevirostris P. E. M., 

 » coregoni Baird. 

 Fam. 4. Lyncodaphnidae. 



Macrothrix laticornis Jurine, 

 Streblocerus serricaudatus G. 0. S., 

 Drepanothrix dentata Euren, 

 Acantholeberis curvirostris Miiller, 

 Byocryptus sordidus Lievin, 



» a gilts Kurz, 



Lathonura rectirostris Miiller, 

 Ophryoxus gracilis G. 0. Sars, 

 Fam. 5. Lynceidae. 



Eurycercus lamellahis Miiller, 

 Leydigia quadrangular is Leydig, 

 Alona quadrangular is Leydig, 

 » oblonga P. E. Miiller, 

 » costata G. 0. Sars, 

 » lineata Fischer, 

 » rectangula G. 0. Sars, 

 » guttata G. 0. Sars, 

 » pulchra Hellich, 

 » tuberculoid Kurz, 

 » karelica n. sp. 

 Harporhynchus falcatus G. 0. Sars, 

 Alonopsis elongata G. 0. Sars, 

 Acroperus leucocephdlus Koch, 



» angustatus G. 0. Sars, 

 Camptocercus rectirostris Schoedler, 



» fennicus n. sp. 



Graptoleberis testudinaria Fischer. 

 Alonella rostrata Koch, 

 » excisa Fischer. 



