28 G. O. SARS. M.-N. Kl. 



edge form.s a rather deep sinus. The terminal claws are well developed, 

 though somewhat smaller than in the female, and the anteanal denticles 

 are fewer in numf)er. The colour is rather pale yellowish. 



Observations. This small species developed rather abundantly in 

 some of my aquaria, and was domesticated for several succeeding seasons, 

 hi spite of its diminutive size, it is, when observed in the living state, at 

 once recognizable from any of the other s])ecies by the j)eculiar mode 

 in which it moves through the water. While in the latter the motion 

 generally consists in a rather even, and somewhat revolving run, the present 

 species swims by short, abrupt jerks, similar to what is found in some 

 species of the genus Alonclla, as A. cxigna Lilljeborg. 



Distribution. According to Mr. Richard, this form was collected in 

 rather great abundance by Mr. Barrois in a pond at Abbâdi in Palestine. 



Ostracoda. 



Fam.: Cypridio.ee. 



Gen. : Cypria, Zencker. 



lo. Cypria capensis, G. O. Sars, n. sp. 



(PI. 5, fig. I. a~c.) 



Specific Characters. Shell much compressed, and but s])aringh' hairy 

 at each extremity; that of female, seen laterally, oval reniform, with the 

 greatest height behind, dorsal margin nearly straight in the middle, and 

 subangular both in front and behind, ventral margin distincth' sinuated, 

 anterior extremity oblicjucly rounded, posterior blunted, and somewhat 

 expanded below; — seen from abo^'e, narrow oblong, slightly tapering in 

 front, both extremities obtuse. Shell of male comparatively shorter and 

 higher, with the dorsal margin forming a "\'erv strong and quite even curve. 

 V^alves in both sexes somewhat unequal, the left one being the larger, 

 and overlapping the right at both extremities by a thin hyaline border. 

 Surface of shell sniooth, polished. Colour light orange, with reddish 

 iîrown shadows dorsall}", and irregular small dots of same hue laterally. 

 Length ol adult female 0,78 nun., of male 0,60 mm. 



Remarks. This new species, which undoubtedly belongs to the genus 

 Cypria of Zencker, is easily distinguished from the other known species 



