PANDARIDAE — CRESSET 



GENERA OP GROUP II FEMALES 



1. Abdomen 2-segmented 2 



Abdomen 1-segmented 3 



2. Fourth leg lamelliform Dinemoura 



Fourth leg not lamelliform Pagina 



3. Fourth leg lamelliform Echthrogaleus 



Fourth leg not lamelliform 4 



4. Abdomen with large dorsal plate Demoleus 



Abdomen without dorsal plate 5 



5. Exopods of legs 1-3 3-segmented Paranesippus 



Exopods of legs 1-3 2-segmented Nesippus 



Genus Pandarus Leach, 1816 



Pandarus Leach, 1816, p. 405. [Type-species: P. bicolor.] 

 Caligus. — Lamarck, 1818, p. 137. [Refers to C. bicolor only.] 

 Nogagus Leach, 1819, p. 536. 



Female. — ^Frontal plate distinctly separate. First thoracic seg- 

 ment fused with cephalon. Thoracic segments 2-4 free, bearing dorsal 

 plates. Dorsal plates of segment 3 never extending beyond plate 

 of segment 2. Plates of segment 4 fused basally. Abdomen 1- 

 segmented with dorsal plate. Abdomen (or its plate) visible dorsally 

 and attached to distal end of genital segment. Caudal rami lateral 

 to abdomen. First antenna 2-segmented. Adhesion pads present on 

 cephalon in association with first and second antennae and maxilhped ; 

 pads also located on ventral sm'face of posterior corners of cephalon. 

 Claw of maxilliped spatulate. Legs 1-4 biramose, rami of legs 1-3 

 2-segmented. Rami of leg 4 1-segmented. Leg 5 present. Egg 

 strings long and straight. 



Male. — No dorsal plates present. Cephalic appendages in general 

 like those of female. Legs 1-4 biramose, all rami 2-segmented and 

 bearing plumose setae. Fifth and sixth legs present. Leg 3 endopod 

 unmodified. 



Discussion. — Since 1816, 29 species have been described and as- 

 signed to this genus. Only 10 of these remain valid today. The 

 synonymies are discussed with the species descriptions. I propose to 

 designate each of the following 4 species described by Hesse in 1883 

 as a nomen dubium on the basis that the descriptions and figures are 

 so poor that it is impossible to assign these to any known taxon: 

 Pandarus mustelilaevis, Pandarus unicolor, Pandarus spinaciiachantias , 

 and Pandarus carchiiglaucus. 



Members of the genus Pandarus are parasites on the body surface of 

 the host. They have been reported from both pelagic and inshore 

 species and are the most frequently encountered pandarid copepod. 

 The females of some species are heavily pigmented and those of others 



