COPEPODS OP THE WOODS HOLE HEGION 



359 



CORYCAEUS DANAE Giesbrecht 

 FiGUBB 217 



Corycaeus danae Giesbrecht, Atti Accad. Lincei, Rome, ser. 4, vol. 7, p. 480, 

 1891 ; Fauna und Flora des Golfes von Neapel, vol. 19, p. 660, pi. 51, 1892. 



OccuiTence. — Two females were taken in a surface tow on Georges 

 Bank, September, 1874. 



Distribution. — Tropical Pacific (Giesbrecht) ; Arabian Sea, Ked 

 Sea, Indian Ocean, Mediterranean (Thompson and Scott) ; South 

 Africa (Stebbing) ; Indian Ocean (Far- 

 ran) ; North Atlantic (Cleve). 



Color. — Unknown. 



Female. — Head separated from first seg- 

 ment; third and fourth segments fused, 

 lappets on the third segment not reaching 

 l^osterior margin of the genital segment; 

 lappets on fourth segment short and acumi- 

 nate; genital segment elliptical, widest 

 through the center; caudal rami three- 

 fourths as long as urosome and divergent, 

 obliquely truncated at the tip leaving the 

 outer corner acute. Total length, 1.65-1.75 

 mm. 



Male. — Body narrower than that of the 

 female; head fused with first segment, 

 widest at anterior end and tapered back- 

 ward ; third and fourth segments fused, the third lappets extending 

 about to the center of the genital segment ; fourth lappets short and 

 mucronate. Genital segment elliptical, widest through the center, 

 with smooth lateral margins, each bearing a plumose seta near the 

 posterior end; caudal rami three-fourths as long as urosome and 

 parallel. Total length, 1.3-1.4 mm. 



Remarks. — This species is pelagic and rare in the present area ; its 

 distinguishing characters are given in the key to the species, and 

 with them may be included the size, this being one of the larger 

 forms. 



CORYCAEUS OVALIS Qans 

 FlOXTSB 218 



Corycaeus ovalis Glaus, Die frei lebenden Copepoden, p. 158, 1863. — Giesbrecht, 

 Fauna und Flora des Golfes von Neapel, vol. 19, p. 659, pis. 49, 51, 1892. 



Occurrence. — Two females taken at the surface on Georges Bank, 

 September, 1874; two females in a vertical haul at Station 20048, 

 GraTiipus, east of Chatham. 



FiGUEB 211 . — Corycaeus 

 danae: a. Female, dorsal 

 (after Giesbrecht) ; i, male, 

 dorsal 



