18 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 120 
Right Al in dorsal view with segment 17 lacking denticulated 
ridge, anterior surface rounded, not flattened, and bearing small, 
low protuberance just proximal to midlength of segment. Segment 
18 with prominent denticulated ridge; ridge extended proximad, 
projecting along axis of antennule and in dorsal view overlapping 
SCALE 
05mm 
figs.c,d,e,f,g,h 
r o2mm { 
figs. b,i 
I 0.1mm \ 
fig.a 
Ficure 6.—Labidocera diandra, new species, adult female: a, right mandible, gnathobase, 
anterior view; b, P5, posterior view; c, cephalosome, right lateral view; d, prosome and 
urosome, dorsal view; ¢, posterior half of body, left side; f, posterior half of body, right 
side; g, posterior half of body, right side, with spermatophore; h, posterior half of body, 
dorsal view, with spermatophore. Penultimate copepodite: 4, P5, posterior view. 
