PARASITIC COPEPOD CRUSTACEANS — LEWIS 



139 



setule. Heavily sclerotized regions underlying both mandible and 

 postoral process not appearing continuous. Pair of small, postoral 

 adhesion pads (fig. 37c) present just posterior to postoral process, 

 between and shghtly posterior to maxilla bases. 



Maxilla (fig. 37c) 2-segmented, situated just posterior and lateral to 

 postoral process. First segment slightly more than two-thirds the 



Figure 'il.—Alebion gracilis Wilson, 1905, female, ventral view: a, right antennule; b, 

 left antenna, postantennal process (pap), mouth cone (mc), mandible, and postoral pro- 

 cess; c, left postoral process (pop), maxilla, and maxilliped base (mxpd); d, left maxilla 

 base (max) and maxilliped. 



