Late Cenozoic Ostracodes — Holden 
33 
t 
Fig. 23. Loxoconcha longispina Keij, 1953. a~b, Plesiotype usnm 648776; a, dorsal view of entire 
carapace; b, lateral left valve view, c, Plesiotype sdnh 1052; internal view of right valve, marginal features 
not preserved, d, Plesiotype usnm 648777 ; lateral left valve view of dorsally tuberculate form. 
dimensions: See Table 7. 
distribution: As fossils from T-l (2 
valves), T-ll (2 valves; 1 entire), and T-12 
(105 valves; 6 entire) ; Recent from the Hawai- 
ian Islands at T-l 3 (2 valves), Easter Island 
at EA-1 (3 valves) ; reported by Brady (1880) 
off Honolulu at 40 fathoms, and by Brady 
(1890) from New Caledonia at 3-6 fathoms 
and Fiji in the littoral zone; reported by Keij 
(1953) from 364-4483 m (redeposited) in 
the Banda, Java, and Celebes seas. 
discussion: Loxoconcha longispina occurs in 
great abundance at T-12, but is strangely absent 
from most other stations from the drowned ter- 
TABLE 7 
Dimensions of Loxoconcha longispina keij, 1953 
SPECIMEN LENGTH WIDTH HEIGHT 
Plesiotype usnm 648776 (entire) T-12 
Plesiotype usnm 648777 (right valve) T-12 
Plesiotype usnm 648778 (right valve) T-12 
Plesiotype usnm 648779 (entire) T-12 
Plesiotype sdnh 1052 (right valve) T-12 
Plesiotype sdnh 1053 (left valve) T-12 
Plesiotype sdnh 1054 (right valve) T-12 
0.53 
0.38 
0.32 
0.54 
0.24 
0.34 
0.50 
0.19 
0.30 
0.54 
0.39 
0.32 
0.51 
0.21 
0.30 
0.53 
0.21 
0.32 
0.52 
0.20 
0.32 
