196 DR. G'.'S. BRADY ON THE [Feb. 1, 



Fam. CypeidiDjE. 



Subfam. 1. Candonince. 



Posterior antennae destitute of swimming setse. 

 Last foot with three unequal end seta?. Caudal rami well 

 developed. Sexes distinct. 



Subfam. 2. Herpetocypridince. 



Seta? of the posterior antenna? not reaching beyond the ex- 

 tremities of the apical claws. First segment of maxilla with 

 two smooth or toothed spines. Last pair of feet forcipate, 

 with a curved claw. Caudal rami normal. Monoecious. 



Subfam. Candonince. 



Genus Candona Baird. 



Candona Candida 0. F. Muller (in part). (Plate XIX. figs. 1-11.) 

 (Syn. Candona lucens Baird.) 



1785. Cypris Candida Muller r Entomostraca, p. 62, tab. vi. 

 figs. 7-9. 



1866. Candona Candida Brady, (1)* p. 383, pi. xxv. figs. 1-5. 



1889. Candona Candida Brady & Norman (in part), (2) Part i. 

 p. 98, pi. x. figs. 14-17. 



1891. Wandona Candida Vavra, (6) p. 48, fig. 14. 1-10. 



1900. Wandona Candida G. W. Muller, (5) p. 15, pi. ii. figs. 1-3, 

 7-12. 



1900. Candona Candida, Kaufmann, (4) p. 379, pi. xxvii. 

 figs. 10-13, pi. xxviii. figs. 18-25. 



This is probably the commonest and most widely distributed 

 form of the fresh-water Candonce, but near the sea it seems 

 generally to give place to C. angulata or C. neglecta, preferring 

 the purer water of lakes, ponds, and streams. 



The drawings here given (figs. 1-11) are from specimens taken 

 in a pool above high-water mark at Penmaenmawr, which, how- 

 ever, would not be quite inaccessible to saline spray during storms. 

 These agree closely with the descriptions and figures of Herr 

 Kaufmann taken from Swiss specimens, and may I think fairly 

 be taken to represent the typical form of C. Candida. But the 

 prehensile claws of the second pair of maxilla? as figured by G. 

 W. Muller and Vavra differ so much from those of the form now 

 under consideration, that I doubt whether they may not belong 

 to some other species. The form referred to by Brady and 

 Norman as var. tumida differs, scarcely at all from that here taken 

 as typical C. Candida. 



The shell of the male, as seen from the side, is more elongated 

 than that of the female, and is more fully rounded posteriorly and 

 somewhat less tumid when seen dorsally. 



Shell smooth, and devoid of reticulated sculpture ; colour white 



f 

 * The numbers in brackets refer to the corresponding numbers in the list of papers 



given on p. 216. 



