11 



66 V. VAVEA ON IIMNAD1A AND LIMNETIS. 



Limnetis braehyura (O.F.M.) 



1785. Lynmi8 brachyurus, 0. F. Muller, Z??i£. Pern., p. 69, 

 pi. viii. 



1847. Limnetis braehyura, Loven, Kgl. Akad. llancll. for 1845, 



p. 430. 



1848. Hedessa sieboldi, Lievin, Schrift. Ges. Danzig., p. 4. 

 1853. Limnetis braehyura, Grube, Arch. Nat., p. 156. 



P. E. Muller, Nat. Tid., p. 569. 



Hellich, Yesmir, t. iv., p. 158. 



Lilljeborg, Nova. Act. Ups., iii., p. 18. 



Simon, Crust. Phyll., p. 457. 

 ,, Sars, Overs. Nory. Crust., p. 29. 



„ Wierzejski, Sprav. Kom. Fyz., t. xxxi., 

 p. 178. 



The family of the Limnadiidae contains a second genus 

 Limnetis. The species L. braehyura (O.F.M.) is comparatively 

 small, being only 3 mm. long. The shell is almost globular, 

 smooth and shining, and in outward appearance exactly like the 

 shell of a Cyclas. The head is large ; the first pair of antennae 

 small and two- jointed. According to the investigations of Lillje- 

 borg, there is only one pair of maxillae, as in the Cladocera, 

 while in all the other Phyllopods there are two pairs. This 

 species was found by B. Hellich in material collected in a little 

 pond near Melnik by Professor A. Fritsch, and was described 

 by him in the Bohemian periodical Yesmir, in 1875. Specimens 

 are preserved in the collection of the Prague Museum. 



Up to the present time this species has been found in Den- 

 mark, Germany (Danzig), Russia (Archangel, Dorpat, Charkow), 

 Finland, Bohemia, and Galicia (Orakow). 



EXPLANATIOX OF PLATE 4. 



Fig. a. Limnadia lenticularis ? , lateral view, nat. size. 

 11 0- ii ii dorsal ,, ,, ,, 



, , c. ,, ,, lateral ,, x o. 



„ d. „ „ post-abdomen, x 14. 



11 eand/ „ ., egg, x 90. 



' a. Quekett Microscopical Club, Scr. 2, Vol. IX., No. 54, April 1004. 



