COPEPODS OF THE WOODS HOLE REGION 

 PHYLLOPUS BIDENTATUS Brady 



Figure 93 



137 



S. Challmyer, vol. 8, pt. 23, 

 Scott, Siboya-Bxpeditie, 29a, 



Phyllopus Udentatus Brady, Voyage of H. M. 

 Copepoda, p. 78, pi. 5, figs. 7-16, 1883.— A 

 Copepoda, pt. 1, p. 147, pi. 45, figs. 1-9, 1909. 



Occurrence. — One female taken in a vertical haul, Station 20107, 

 Grampus, off Georges Bank. 



Distribution. — South Atlantic, off Buenos Aires (Brady) ; Gala- 

 pagos Islands (Giesbrecht) ; northern Atlantic (Wolfenden) ; Cali- 

 fornia coast (Esterly) ; 

 Gulf of Guinea (T. Scott) ; 

 Malaysia (A. Scott) ; South 

 African coast (Cleve, Steb- 

 bing). 



Color. — Body transpar- 

 ent and colorless. 



Female. — Metasome twice 

 as long as wide, its poste- 

 rior corners produced into 

 sharp processes, the right 

 one larger than the left; 

 fifth legs 5-segmented, the 

 second (basipod) segment 

 Avith a long plumose seta at 

 the outer distal corner, the 

 foui'th segment with a 

 similar seta at the inner 

 distal corner; end segment 

 shortened and tipped with 

 an inner spine and a 

 toothed lobe. Total length, 

 2-2.8 mm. 



Male. — Left antenna geniculate; urosome symmetrical; fifth legs 

 each with two basipod and two exopod segments, left leg with a 

 1-segmented, lamellar endopod, without setae or spines, right leg 

 without an endopod; first exopod segment of both legs produced 

 at the outer distal corner and armed with a short spine; the two 

 distal exopod segments of each fifth leg rather bizarre in shape and 

 arrangement. Total length, 2-2.25 mm. 



Remarks. — The fifth legs furnish the distinctive characters of this 

 species; it is a rare form, and most of the authors mentioned above 

 report but a single specimen each. 



Figure 93. — Phyllopus hidcntatus: a. Female, dor- 

 sal ; b, female, fifth legs ; c, male, fifth legs 

 (after A. Scott) 



