PARASITIC COPEPOD CRUSTACEANS — LEWIS 



59 



in the collection and no comparative descriptions or illustrations are 

 given, the male and female symbols are not used. 



The terminology used is basically the same as that in Lewis (1964) . 

 The terms postantennular adhesion pad, postantennal process, postoral 

 process and postoral adhesion pad imply the position and nature of 

 the structure, not the association of it with any appendage. The 



Figure 1. — Hypothetical thoracic leg showing various armament components: 



a: adhesion pad 



B: large bilobed armature element 



b: small bilobed membranous process 



C: large plumosities 



c: small pulmosities 



CI: spikelike extension of segment 



D: large denticulations 



d: small denticulations 



dfH: large spine with frilled membranous 

 margin and denticulations around base 



dH: large spine with denticulated mem- 

 brane along margins 



dP: large, denticulated seta 



fmH: large spine with frilled membrane 

 along margin 



H: large spine 



h: small spine 



m: membrane 



mH: large spine with membranous margin 



mh: small spine with membranous margin 



mP: large membrane-margined seta 



P: large plumose seta 



p: small plumose seta 



P': large naked seta 



p': small naked seta 



pH: large plumose spine 



Q: seta with membrane along one margin, 



plumosities along other 

 r: rugose surface 

 rh: spinule 



S: spikelike projection of interpodal plate 

 s: small hairlike projection 

 Isss: 3 hairlike projections from same 



location 



