NO. 3570 PANDARIDAE — CRESSEY 49 



Legs 1-4 biramose, with spine and setal formula as follows: 



leg 1 leg Z leg S leg i 



exp. end. exp. end. exp. end. exp. end. 



seg. 1 1:0 0:0 1:1 0:1 1:1 0:1 1:1 0:1 



seg. 2 IV:3 3 IV:5 8 IV:5 5 111:5 4 



Leg 5 (fig. 240) located ventrally near outer distal corner of genital 

 segment and composed of a signle lobe bearing a short plumose seta. 

 Leg 6 (fig. 241) located near junction of abdomen and genital segment 

 and represented by a finger-like lobe. 



Egg strings coiled and not protruding (fig. 242), remaining hidden 

 between dorsal abdomen plate and abdomen. 



Color in preserved specimens cream and devoid of pigmentation. 



Male.^ — -Unknown. 



Discussion. — I have been able to supplement the original descrip- 

 tion on a few points, particularly the nature of the 5th and 6th legs 

 and the egg strings. The specimens I received were still attached 

 to pieces of fin from the host shark. I noticed that the copepods 

 were attached to the lighter pigmented surface (presumably lower) 

 of the fin. This would indicate that in this instance the pectoral or 

 pelvic fins were involved. 



This is only the second record of this copepod; consequently, too 

 little is known about the species to draw any conclusions regarding 

 its host specificity or geographic distribution. 



This species is easily separated from D. heptatus by the nature of 

 the abdomen and general configuration of the body. 



Genus Pagina Cressey, 1964 



Pagina Cressey, 19G4, p. 285. [Type-species: P. tunica.] 



Female. — -Fi'ontal plate distinctly separate. First thoracic seg- 

 ment fused with cephalon. Thoracic segments 2-4 free. Second 

 and third thoracic segments without dorsal plates. Fourth segment 

 with a dorsal plate. Abdomen 2-segmented, each segment with a 

 dorsal plate. Abdomen attached to distal end of genital segment 

 and visable dorsally. Cephalic appendages of typical pandarid 

 type. Legs 1-4 biramose; rami of leg 1 2-segmented, those of legs 

 2-4 3 -segmented; all bearing plumose setae. Fifth and sixth legs 

 present. Egg sacs long. 



Male. — Body of typical pandarid form. No dorsal plates present. 

 Appendages with same generic characters as the female. 



The name Pagina, from Latin, meaning ''a page," refers to the 

 relationship of the abdominal plates to each other. 



221-534—67— — 4 



