202 DR. G. S. BRADY ON THE [Feb. 1, 



Candona protzi Hartwig. (Plate XXIII. figs. 1-8.) 



1898. Candona protzi Hartwig, Zool. Anzgr. p. 476. 



1900. „ „ G. W. Miiller, (5) p. 35, Taf. vi. figs. 4, 5, 



17-22. 



1891. Candona elongata Vavra (?), (6) p. 111. 



Shell of the male (fig. 1) seen laterally oblong, subreniform, 

 greatest height equal to half the length, situated in the middle ; 

 posterior extremity boldly rounded, anterior rounded but not so 

 fully as the anterior ; dorsal margin evenly arched, almost gibbous 

 in the middle, ventral sinuated, with a slight pouting protuberance 

 of both valves in front of the middle : seen dorsally (fig. 2) the out- 

 line is compressed, oblong-ovate, thrice as long as broad, acuminate 

 in front, narrowed more abruptlj' toward the posterior extremity 

 which is obtusely pointed. Shell-surface smooth ; colour brown. 

 Length 1 mm. Shell of the female (fig. 3) longer in proportion 

 to the height and without protuberance of the ventral margin. 



Anterior antenna? slender, with long, delicate seta?, the terminal 

 joints more than twice as long as broad ; setose fascicle of the 

 posterior antenna? (fig. 5) scarcely reaching to the end of the last 

 joint, terminal claws not pectinated ; last joint of the last pair of 

 legs not f orcipate, bearing three seta?, two very long and one about 

 half as long as the other two, penultimate joint with one shoit 

 seta. Caudal rami slender, with smooth margins ; terminal claws 

 simple, not half as long as the limb, marginal seta situated a little 

 beyond the middle (fig. 8). Prehensile claws of the posterior 

 maxilla? in the male very robust, strongly falcate, the tips obtuse, 

 emarginate, and armed with a minute hyaline mucronate ajiical 

 process (figs. 6, 7). 



Some of the specimens hitherto referred to Candonopsis kingsleii 

 belong undoubtedly, as has been pointed out by Dr. G. W. Miiller, to 

 C. protzi. This is certainly the case with many Scottish examples, 

 as for instance those from Lochmaben and Lewis. It is by no 

 means easy to distinguish, except by careful dissection, between 

 such closely similar forms as C. protzi, C. kingsleii, C. hyalina, 

 and perhaps sometimes C. fabwformis. I am indebted to my 

 friend Mr. D. J. Scourfield for specimens of C. protzi from 

 Wanstead Park, Essex. 



Candona zenckeri G. 0. Sars. 



1890. Candona zenckeri G. O. Sa,rs, " Oversigt af Norges 

 Crustaceer, ii. Branch., Ostrac, Cirrip.", Vidensk.-Selsk. 

 Forhand. p. 66. 

 1896. Candona zenckeri Brady & Norman, (2) Part ii. p. 730, 



pi. lxiii. fig. 25, pi. lxviii. figs. 12, 13. 

 This species was found many years ago by the Rev. Canon 

 Norman in a pond at Ferry Hill, Co. Durham, but has not been 

 taken since in Britain. 



I have nothing to add to the account given in the " Monograph " 

 (loc. cit.). 



