4 G. O. Sars. 



which was procured through the kind intervention of my 

 friend and colleague Prof. R. Collett, a number of Ento- 

 mostraca, belonging to the 3 leading groups Cladocera, Cope- 

 poda and Ostracoda, ha\e been successfully raised. These 

 forms will likewise be mentioned in the present paper, be- 

 cause China and Sumatra, according to the the general 

 assumption of zoologists, belong to a common zoogeogra- 

 phical region. As will be shown below, severals of the forms 

 observed are apparently new to science, whereas others 

 have turned out to be identical with forms, partly known 

 from Europe, partlj^ from other parts of the world. On 

 the whole several additional instances of the extraordinary 

 wide geographical distribution of certain fresh-water Ento- 

 mostraca will be demonstrated in the present paper. 



I give below separate lists of the several species ob- 

 served from each localitv. 



I. SUMATRA. 



PHYLLOPODA. 



1. Limnadia lenticularis (Lin.). 



CLADOCERA. 



2. Diaphanosoma Sarsi, Rich. 



3. Daphnia longispina (Müll.). 



4. Simocephalus exspinosiis (de Geer). 



5. Scapholeberis Kingi, G. O. Sars, n. sp. 



6. Criodaphnia Rigaudi, Rich. 



7. Moinodaphnia Macleayi (King). 



8. Macrothrix spinosa, King. 



9. Ilyocryptus longiremis, G. O. Sars. 

 10. Chydoriis sphœricus (Müll.). 



