_82_ 



Male of about same size as female, but having the posterior part of the 

 shell more broadly rounded off. Prehensile palps of maxillipeds resembling 

 in structure those in C. marchica. Caudal rami about as in female. Copulative 

 appendages with 3 well defined terminal lappets of nearly equal size, though 

 somewhat differing in shape. 



Colour whitish, with a fainte yellow tinge. 



Length of adult female amounting to 0.86 mm. 



Remarks. The above-described form was shortly characterised by the 

 present author in the year 1899; but the structural details were not sufficiently 

 made out, for which cause the species was not recognised by subsequent 

 authors, it having been recorded as new under 2 different names, viz., as 

 C. rara by G. W. Mtiller and as C. quadrata by Aim. The latter author has 

 however in his most recent treatise admitted the identity of these 2 forms 

 with the Norwegian species. The form recorded by me under the name of 

 C. Zenkeri I am now disposed to consider as only a variety of the present 

 species. 



Occurrence. I found this form, many years ago, rather abundantly in 

 some small ditches located in the immediate neighbourhood of Christiania. 

 These ditches are now destroyed by new-building; but I had fortunately secured 

 a sufficient preserved material for a renewed examination, and have thus been 

 enabled to confirm the statement given by Dr. Aim about the remarkable size 

 and peculiar shape of the genital lobes in the female. 



Distribution. Sweden (Ekman), British Isles (Brady), Germany (C. W. Miiller). 



21. Candona albicans, Brady. 



(PI. XXXIX, fig. 1). 



Candona albicans, Brady, Monograph of recent British Ostracoda, p. 381, PI. XXV, figs. 2025). 

 Syn: Candona parallela, G. W. Mtiller. 



Specific Characters. Female. Shell, seen laterally, oval subreniform in 

 shape, only slightly higher behind than in front, greatest heigt somewhat 

 exceeding half the length, dorsal margin perfectly straight and nearly horizontal, 

 with a fainte indication to an angle both in front and behind, ventral margin 

 only very slightly sinuated, anterior extremity obliquely rounded, posterior 

 obtusely blunted and scarcely expanded below; seen dorsally, oblong oval or 

 elliptical in outline, with the greatest width about equal to 2 /-> of the length 

 and both extremities obtusely pointed. Valves only slightly pellucid and clothed 

 at each extremity with short and delicate hairs, surface of a dull appearance, 





