Late Cenozoic Ostracodes — Holden 
35 
Fig. 24. Loxoconchella honoluliensis (Brady), 1880. a-b, Plesiotype usnm 648780; a, left valve view of 
slightly deformed entire female carapace; b, dorsal view, c, Plesiotype sdnh 1056; hinge view of right valve. 
diagnosis: Heavily reticulate, posterodorsally 
inflated carapace; broad caudal process; rela- 
tively simple radial pore canals. 
description: In lateral view: dorsal margin 
straight from large low-set eye tubercle to high- 
est point just behind carapace midlength, then 
concave upward to end of high, large caudal 
process ; ventral margin gently and evenly 
rounded, continuous with evenly rounded an- 
; terior margin; posterior margin below caudal 
process very slightly concave; surface heavily 
reticulate except on smooth caudal process, 
reticulations forming concentric pattern; weak 
marginal ridge from eye tubercle to postero- 
venter around anterior margin. In dorsal view: 
'carapace diamond shaped, widest just behind 
! center at subtle knoblike posterodorsolateral 
inflations. Dimorphism of narrow males (?) 
and wide females (?). 
Hinge adont: anterior element of right valve 
a short groove with ventroadjacent short bar, 
groove continuous with median element of a 
straight smooth furrow ; posterior element a 
long straight smooth bar ; accommodation 
groove above median element of left valve. 
Adductor muscle scar pattern of four small 
elongate scars in curved row, top scar larger 
and apart from other three; larger single anten- 
nal scar anterior to top adductor scar. Duplica- 
ture wide, anterior and posteroventral vestibules 
present; radial pore canals long, dividing into 
three near margin, variable, some widened, as 
elongate extensions of the vestibule; normal 
pores small, several to each reticulation, interior 
surface unpitted. 
dimensions: See Table 8. 
distribution: As fossils from T-l (1 valve), 
T-4 (1 valve; 1 entire), T-7 (2 valves), T-ll 
(1 valve; 1 entire), and T-12 (19 valves; 4 
entire), and S-23 (1 valve). Reported by Brady 
