COPEPODS OF THE WOODS HOLE REGION 



51 



dopod of first leg 1-segmented, of second leg 2-segmented, of third and 

 fourth legs 3-segmented ; fifth legs lacking in female, present in the 

 male, each 5-segmented, with rudimentary endopod. 



KEY TO THE SPECIES (BOTH SEISES) 



First antennae twice as long as body ; spine on head pointed 

 forward; exopod of first legs 2-segmented miles (p. 51) 



First antennae reaching little beyond caudal rami; spine on 

 head pointed ventrally ; exopod of first legs 3-segmented kruppii (p. 52) 



GAETANUS MILES Giesbrecht 



FlGUBE 31 



Gaetanus miles Giesbrecht, Atti Accad. Lincei, Rome, ser. 4, vol. 4, sem. 2, p. 

 335, 1888 ; Fauna und Flora des Golfes von Neapel, vol. 19, p. 219, pis. 14, 

 36, 1892. 



Occurrence. — A single female taken 

 in a vertical haul. Station 20069, 

 Grampus, south of Georges Bank. 



Distribution. — North Atlantic (Far- 

 ran) ; tropical Pacific (Giesbrecht) ; 

 Malay Archipelago (A. Scott) ; be- 

 tween British Isles and Iceland 

 (With) ; South Atlantic (Cleve, Steb- 

 bing) ; Gulf of Maine (Bigelow). 



Color. — Nothing is known with re- 

 gard to the color of the living cope- 

 pod; preserved specimens are quite 

 transparent and yellowish horn-color. 



Female. — Spine on the head point- 

 ing straight forward ; first antennae 

 more than twice the body length; 

 spines at posterior corners of fifth seg- 

 ment almost reaching the posterior 

 margin of the genital segment ; exopod of first legs with only 2 seg- 

 ments ; inner margin of basipod of fourth leg with a semicircular row 

 of 5 or 6 coarse setae or spines. Total length, 3^.3 mm. 



Male. — Unlcnown. 



Remarks. — This species may be recognized by the length of the 

 first antennae and the presence of a frontal spine. The number 

 of spines on the fourth basipod seems to be larger in Pacific than in 

 Atlantic specimens. Although widely distributed it is found nowhere 

 in any abundance. 



FiGUKE 31. — Oaetanus miles, female : 

 a. Lateral ; b, dorsal 



