Late Cenozoic Ostracodes — Holden 
41 
Fig. 31. Cletocythereis bradyi n. sp. a, Holotype usnm 648789; side view of male right valve, b-c, Para- 
type sdnh 1060; b, internal view of female right valve; c, dorsal view. 
DIMENSIONS: 
SPECIMEN 
LENGTH 
WIDTH 
HEIGHT 
Holotype usnm 648789 
(right valve $ ) T-12 
0.80 
0.20 
0.36 
Paratype sdnh 1060 
(right valve $ ) T-12 
0.70 
0.18 
0.35 
Paratype usnm 648790 
(entire $ ) T-12 
0.76 
0.35 
0.36 
Paratype usnm 648791 
(entire $ ) T-12 
0.69 
0.36 
0.35 
Paratype sdnh 1061 
(young right valve) 
T-12 
0.63 
0.19 
0.30 
distribution: As fossils from T-12 (13 
valves; 4 entire) and Easter Island at EA-2 
(4 valves; 9 entire). Reported by Brady, par- 
tita "females” (1880:83) at 39° 32' S, 171° 
48' E (station 167). 
discussion: Swain (1963) designated Cy- 
there rastromarginata Brady, 1880 the type spe- 
cies of his new genus Cletocythereis, which, to- 
gether with C. noblissimus Swain, 1963, from 
the Pleistocene Gubick Formation of Alaska, 
comprise the only known species of the genus. 
C. noblissimus, however, with its ornamenta- 
tion of three lateral rows of spines and other 
differences, most probably belongs to another 
genus. Cletocythereis, to date, is monotypic. 
The fossil specimens from the Hawaiian 
Islands are comparable in part with Cythere 
rastromarginata Brady, 1880. Brady has mis- 
takenly equated an alate form with a com- 
pressed form, believing these differences to be 
caused by sexual dimorphism. Brady’s inflated 
form (1880:pl. 16, fig. 2) and the fossils from 
the Hawaiian Islands are included together in 
the new species; his description of Cythere ras- 
tromarginata is obviously based on the nonalate 
form and it should retain the name. The pres- 
ent species is distinctly alate and exhibits typi- 
cal trachyleberid dimorphism, with longer 
males. It may be significant that Brady’s 
"males” are not reported from the same locality 
as his "females,” but it is strange that the 
former were reported from the Hawaiian Is- 
lands and the latter from New Zealand. 
Hermanites paijenborchiana Keij, 1957 from 
the Eocene of France appears to be closely re- 
lated to Cletocythereis bradyi, differing only in 
