DEPARTMENT OF NATURAL SCIENCES. 



NOTES ON CLADOCERA. 



Bt EDWARD A. BIRGE, Ph. D. 



During the past three years I have collected Cladocera at inter- 

 vals. The group has been little studied in this country, though 

 thoroughly worked up in Europe. I have found several new 

 forms, including one new genus, and now publish a synopsis of 

 the work hitherto done by me. 



I give only the more important references under the synonymy 

 The works most useful for reference on this group are : 



O. F. Mviller, Zoologize Danicpe Proclromus. 17T6. 



" Entomostraca. 1785. 



Jurine, Hist. d. Monocles qui se trouvent aux environs de Geneve. 1820. 

 Lieven, Branchiopoden der Danziger Gegend. 1818. 

 Baird, Natural History of the British Entromostraca. 1850. 

 Fischer, Ueber die Crustaceen aus den Ordnungen der Branch, und Ento- 

 mos. 1851. 

 " Ergiinzungen, Berichtigungen und Fortsetzung zu der Abhl. ii. d. in 

 der Umg. von St. Petersburg vorkommenden Crustaceen. 1854. 

 Liljeborg, De Crustaceis ex ordinibus tribus; Cladocera, etc. 1853. 

 Koch, Deutschlands Crustaceen, etc. 1835. 



Schodler, Neue Beitrage zur Natnrgeschichte der Cladoceren. 1863. 

 " Die Cladoceren des frischen Hafls. 1863. 

 " Zur Naturgeschichte der Daphniden. 1877. 

 Leydig, Naturgeschichte der Daphniden. 1860. 

 P. E. Miiller, Dan marks Cladocera, 1868., 

 Kurz, Dodekas neuer Cladoceren, 1874. 



Weissman is now contributing some very valuable papers on structure and 

 physiology to the Zeitschrift flir Wissenschaftliche Zoologie. 



In my notes, all the above papers are cited by the name of the 

 author, or, if necessary, by adding to his name a single word. 



