STATE GEOLOGIST. IT 



This valua 'le work is particularly good on the Cladocera, but is 



unfortunately •;;iathout Latin descriptions; so that the Swedish 



text is a hindrance to its usefulness. It is chiefly of historic value 



now. Large 8vo; Lund, 1855. 



Schoedler, J. E., Die Branchipoden der Umgegend von Berlin, 1858. 



Smitt, F. A., Sur les Ephippes des Daphnes. 



LuhbocH, J., An account of tlie two metliods of reproduction in Daphnia, etc. 



Leydig, Fr., Naturgeschiciite der Dapliniden. 



The most magnificent work published, 



Lilljeborg, W., Leptodora hyalina, 1861. 



Sars, G. O., Om Crustacea Cladocera, iagttagne i Omegnen af Christlania, 1862. 



This valuable work is difficult of access, printed on thin paper and 



without illustrations. A second paper by the same author in 1863 



is mentioned, but I have never seen it. 



Schoedler, J. E., Neue Beitrage zur Naturgeschicte der Cladoceren, 1863. 



One of the most important works on the Lynceidse. The author 



is rather too credulous and inclined to form new species. 



Klunzinger, Einiges zur Anatomie der Daphniden nebst kurzen Bemerkungen ueber 



die Susswasserfauna der Umgegend Cairo's. 

 Sars, G. O., Norges Ferskvandskrebsdyr Cladocera ctenopoda, 1865. 



The best work on the Sididse, etc. 

 Mueller, P. E., Danmark's Cladocera. 



One of the most useful books on the subject. Especially good 



on Lynceidse and Bosminidae. 



Plateau, Felix, Kecberches sur les Crustaces d'eau douce, etc., 1867-69. 

 Mueller, P. E., Note sur les Cladoceres des Grands Lacs de la Suisse. 

 Weismann, A., Bau und Lebenserschelnungen Leptodora hyalina. 

 Sars, Gr. 0., Om eu dlmorpli Udvlkllng Samt Generationsvexel hos Leptodora, 1873. 

 Cla^^s, C, Zur kennt. d Organ, u. d. felneren Baues der Daphniden. 

 (Jlaus, C, Zur kennt. des Baues, etc., der Polyphemiden. 



Gruber and Weismann, Ueber elnige neue Oder unvollkomen gekannte Daphniden. 

 Weismann, Thierleben im Bodensee, 1877. 



Lutz, A., Untersuchungen ueber Cladoceren der umgebung von Bern . 

 Claus, C, Die Schalendruse der Daphniden, 1874. 

 Spangenberg, Fr., Ueber Bau und Entwicklung der Daphniden. 

 lAUoehorg, W., Crust. Suececorum Ordin. Branchiop. et Subord. Phyllop., 1877. 

 Pavesi, P., Nuova Serei di recherche della fauna pelagica nei laghi Italian!, 1877-1879. 

 Grobhen, C, Zur Entwicklungsgeschicte d. Moina rectirostris, 1789. 

 Weismann, Beitrage zur Naturgsch. der Daphnoiden, Leipzig, 1876-79. (Valuable on 

 the physiology). 



The American literature may be catalogued in a few lines. The 

 first descriptions and figures with which I am familiar are those in 

 the Hep. of the U. S. Fish Commission, 1874, where S. I. Smith notes 

 Daphnia^aleata, D. pellucida and D. piilex; also a species of Bos- 

 mina, Eurycercus lamellatus and Leptodora hyalina. 



A. E. Birge was the first to systematically study Cladocera in 

 America, and his " Notes on Cladocera " furnished a basis upon 



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