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®n the fIDale (Bcnerative ©rcjans of ^wo 



Species of C^pris : 



CvUHis cincrea auD Cypris mlnuta. 



Plates XXII. and XXIII. 



By T. B. Rosseter, F.R.M.S. 



BRADY, in his excellent monograph on the " Recent British 

 Ostracoda," published in Vol. 26, Trans. Linnean Society, 

 p. 374, places in the sub-genus Cypridce (Zenkier) a new 

 species, and gives it the specific name of Cinerea — ash-grey. He 

 says:— "It is distinct from any other British Cypris, and that he 

 has not been able to identify it with any of the numerous species 

 described by continental authors." It is plain, from Brady's 

 description, that he had only the female under consideration, for 

 he is silent about the male, but so exact is his description of this 

 species, that anyone having made himself acquainted with the 

 results of his investigations could not fail to recognise it when 

 seen. He only found it in one locality, viz. — in a pool on the 

 summit of Mickel Fell, Yorkshire, at an elevation of 2,000 feet. 

 It was during the month of December, of last year, that in a 

 stock-bottle, containing both sexes of C. mimita, I found some 

 specimens of Cypris, unknown to me, but which proved after- 

 wards, on reference to Brady, to be females, and one solitary 

 male of C. cinerea. 



During the month of June last, I found both males and 

 females of C. cinerea in a pond at Churchwood, at an elevation of 

 220 feet, the property of the Dean and Chapter of Canterbury 

 Cathedral. I have not found it to be common, and do not think 

 it is so. When I discovered it, I plumed my feathers and fancied 

 I had found a new species, not only of the female, but of the 

 male Cypris also. At this time, I was conversant only with 

 " Baird's British Entomostraca," and could find nothing there to 

 satisfy my mind in connection with it. Not being aware that 

 Brady had discovered and described it, I made some careful notes 

 of both sexes, and, although I must confess I was somewhat dis- 



