1910.] BRITISH SPECIES OF OSTRACODA. 199 



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

 p. 98, pi. x. figs. 20-23, and var. claviformis, pi. x. 

 figs. 1, 2. 



1900. Candona neglecta G. W. Miiller, (5) p. 17, pi. ii. figs. 4-6. 

 13-18. 



1900. Candona neglecta Kaufmann, (4) p. 387, pi. xxix. figs. 1-5, 

 pi. xxx. figs. 12-18, pi. xxxi. fig. 21. 



The shell of the male seen laterally is reniform, lower in front 

 than behind, greatest height situated much behind the middle 

 and equal to rather more than half the length ; extremities boldly 

 rounded, the posterior much the wider of the two ; dorsal margin 

 boldly arched, sloping with a gentle curve toward the front, much 

 more steeply behind, ventral deeply sinuated in the middle. Seen 

 from above (fig. 2) the outline is ovate, slightly tapering to the 

 front which is obtusely pointed, posterior extremity well rounded, 

 greatest width in the middle a,nd equal to half the length. Surface 

 quite smooth. Length 1-55 mm. 



The shell of the female differs in being smaller (figs. 3, 4), less 

 deeply sinuated ventrally. and in having the two extremities more 

 nearly equal in size. Length L35 mm. 



The contained animal differs scarcely at all from that of 

 C. avgulata. 



Among the British localities in which it has been found are 

 Mutford (Suffolk), and other places in the Eastern fen district, 

 the river Went at Ackworth (Yorkshire), in "the Mere," 

 Scarborough, the Warn Burn (Northumberland), a pond near 

 Sunderland now built over (G. S. B.), and a pond at Sedgefield, 

 Co. Durham (Rev. Canon Norman). It is probably generally 

 distributed, but has not usually been recognized as distinct from 

 C. Candida. 



Candona caudata Kaufmann. (Plate XIX. figs. 12-15 ; Plate 

 XX. figs. 11-13.) 



1900. Candona caudata Kaufmann, (4) p. 365, pi. xxiv. figs. 16— 

 20, pi. xxvi. figs. 17-23. 



The shell of the female, seen laterally (PI. XIX. fig. 12), is 

 elongated, subreniform, greatest height situated in the middle 

 and equal to less than half the length : anterior extremity 

 obliquely rounded, posterior narrower, scarcely rounded, almost 

 angulated ventrally ; dorsal margin evenly arched, sloping very 

 gently in front, steeply behind ; ventral sinuated in the middle 

 and showing again a short sinus near the posterior extremity* 

 (fig. 14) : seen from above (fig. 13) the outline is narrowly 

 oval, nearty thrice as long as broad, widest in the middle and 

 thence tapering evenly to the extremities which are rather sharply 

 pointed. Shell quite smooth, thin, semitransparent ; colour 

 yellowish with darker and lighter patches and a few scattered 

 circular papilla^. Length 1*3 mm. Male unknown. 



* I cannot certainly say whether this sinus is found in one or both valves. 



