NO. 3656 COPEPODS—LEWIS 47 
located slightly posterior and medial to plate. Plate and projection of 
male postantennal process (fig. 20a) much larger, projection falciform, 
process bearing nodules present on plate of female not visible on male, 
nodule posterior to plate of female present on male. Female and male 
postoral process (figs. 20a,b) spikeshaped, situated slightly posterior to 
maxillule base. Postoral adhesion pads present in male (figs. 20a, f) 
although not rugose, consisting of pair of heavily sclerotized, U-shaped 
ridges on median longitudinal axis slightly posterior to maxilla bases. 
bt Ht 
02 mm. 9¢ 
Ficure 20.—Pseudocaligus similis, new species, ventral views: a, oral region of male, 
showing antenna, mouth cone, mandible, maxillule, maxilla base (ma-2), postantennal 
process, postoral process, and postoral adhesion pad; b, same of female (postoral adhesion 
pads missing in female); c, third segment and distal region of second segment of right 
antenna of male; d, right maxilla; ¢, female left maxilliped; f, male postoral adhesion 
pads and left maxilliped; g, sternal furca. 
