146 



PROCEEDINGS OF THE NATIONAL MUSEUM 



replaced by heavily sclerotized bands forming irregular H . Ocular 

 region distinct, in anterior third of body. 



Female free fourth pedigerous segment distinct from cephalothorax, 

 incompletely separable from genital segment dorsally and ventrally, 



1 — I — I — 1 

 0.2mm.cr 



Figure 54. — Caligus longipedis Bassett-Smith, 1898, dorsal view: a, male; b, female; c; 

 posterior cephalothoracic sinus. Ventral view: d, female genital segment; e, male, same, 

 /, female fifth leg; g, male fifth and sixth legs; h, female caudal ramus; i, male, same. 



overlapped anteriorly by lappet-like projections of posterior median 

 cephalothoracic surface. Segment widest medially, angled toward 

 anterior end, convexly curved posteriorly. Genital segment (fig. 54c?) 

 obcordate. Fifth legs (fig. 54/) situated on posterior lateral surface, 



