THE OSTRACODA 



823 



91 Terminal segment of second leg with three unlike setae, one of which 



is reflexed (Fig. 1291 d). . Subfamily Candoninae . . 92 



92 (94) Shell reticulate, very tumid. Small, plump forms, not more than 0.80 



mm. long. Second antenna of both sexes five-segmented. 

 Paracandona Hartwig 1899 . . 93 



93 Shell profusely ornamented with polygonal areas and tubercles 



(Fig. 1291 a). 



Paracandona euplectella Brady and Norman 1889. 



Length 0.56 to 0.58 mm., height 0.32 to 0.36 

 mm., width 0.32 to 0.34 mm. Male somewhat 

 larger. One terminal claw of mandibular palp 

 fused to terminal segment (Fig. 1291 e). Furca 

 stout, six times as long as wide. Dorsal seta about 

 length of subterminal claw. Terminal seta weak, 

 scarcely evident. No other Candona-like ostra- 

 cod shows the ornamentation of polygonal areas 

 and tubercles. The specific name very happily 

 refers to the striking external appearance. Shal- 

 low, swampy regions, in mud and debris of the 

 bottom; spring months. New Jersey. 



Fig. T2QI. 

 Paracandona euplectella. {a) Side view, X 50; (6) Dor- 

 sal view; (c) Furca; {d) Second leg; (e) Mandibular 

 palp. 



94 (92) Shell plain, at least not reticulate or excessively tuberculate or 

 tumid 95 



95 (96) Furca abnormal, terminal seta absent (Fig. 1292 h). 



TypMocypris Vejdovsky 1882 



97 



96 (95) Furca normal, with 2 claws and 2 setae (Fig. 1294 6). 



Candona Baird 1850 



99 



97 (98) Furca nearly straight. Dorsal-valve margins evenly curved (Fig. 

 1292 a-b) TypMocypris peircei Turner 1895. 



Length 0.70 to 0.79 mm., width 0.22 to 0,31 

 mm., height 0.33 to 0.37 mm. Color white, 

 tinged with yellow. Shell smooth, much 

 compressed. Furca nearly straight, and about 

 twelve times as long as wide. Subterminal 

 claw more than two-thirds length of terminal 

 one. Sexual. Ejaculatory duct of seven whorls 

 of chitinous spines. Shallow, weedy ponds; 

 June. Georgia. 



Fig. 1252. 

 Typhlocypris peircei. (o) Side view of female, X a8; 

 (6) Furca of male; (c) Penis. 



