20 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 120 
origin of segment, one about one-fourth of length from origin, and 
one at midlength; number similar to those in male A. 
Terminal segment of left P5 differing slightly in proportions from 
male A but similar in organization and armament (figs. 8f, q). 
ADDITIONAL DESCRIPTION.—Cephalic appendages similar in most re- 
spects to Giesbrecht’s (1892) account of L. wollastoni but showing several 
noteworthy differences. A2 with exopod almost as robust as endopod. 
Figure 7.—Labidocera diandra, new species, adult male, morph A: a, right Al; , dentition 
of fusion segment 19-21, right Al; c, posterior half of body, right side; d, P5, posterior 
view; e, P5, terminal segment of left leg, ventral surface; f, P5, terminal segment of left 
leg, lateral view; g, P3, posterior view; h, P5, chela, anterior view. Penultimate male: 
1, P5, posterior view (male B); 7, right Al, dorsal view (typical of both male forms). 
