PARASITIC COPEPOD CRUSTACEANS — LEWIS 



101 



Maxilliped (fig. 18/) 2-segmented, attached immediately posterior 

 and medial to maxilla base. First segment strongly developed, 

 broad proximally, narrow distally, with 2 small adhesion projections 

 on anterior lateral surface against which second segment terminal 

 process shuts when second segment flexed. Second segment short, 



0.5 mm. 



0.5 mm. 



Figure 19. — Phyllothyreus cornutus (Milne-Edwards, 1840), male, right thoracic legs, 

 anterior view; a, first leg; b, second leg; c, third leg; d, fourth leg. 



terminal process longer than segment, together forming clawlike 

 structm-e. Long, seta-like accessory process present at junction of 

 second segment and terminal process. 



Thoracic legs I-IV biramous, protopodite 1-segmented, rami 2- 

 segmented. For nature of armature and legs see table 7 and figures 

 Ida-d. 



