COPEPOD CRUSTACEANS — LEWIS 



167 



0.1nnm.?d' 



Figure 63. — Caligus ligatus Lewis, 1964, ventral view: a, frontal region, left side showing 

 lunule and antennule base; b, left antennule; c, female oral region, right side showing 

 antenna, postantennal process, mouth cone, mandible, maxillule, postoral process, and 

 maxilla base; d, male left antenna and postantennal process; e, left maxilla;/, female right 

 maxilliped; g, male left maxilliped; h, maxilliped bases (mxpd), sternal furca, interpodal 

 plate of first thoracic leg (ip), and processes between interpodal plates of first and second 

 thoracic legs. 



