Vol. 3] Esterhj. — Copepod Fauna. 77 



margin. The second basal of each foot is without a plumose 

 bristle. 



Length : Female, 3.8 mm. Male, 3 mm. 



Coloration : The entire animal is bluish, and the color ex- 

 tends into the bristles of the appendages. 



Occurrence : The animals were rather common during the 

 sunnner and were always taken at the surface. Types in the col- 

 lection of the University of California. 



The male may be distinguished from other species of the genus 

 by the shape of the fifth foot and the abdomen. The species re- 

 sembles P. villosa Brady, but the thorax and appendages are not 

 pubescent ; the other characters mentioned are also differential. 



Galanus robustior Giesbrecht. 



PI. 14, fig. 81. 

 The female was reported previously (Esterly, :05, p. 129). 



The male was taken in Coll. 1030. 



Length: 3.3 mm. 



Coloration : Opaque, and without pigment ; general appear- 

 ance is whitish. 



The specimeji placed here has two or three small bristles on 

 the inner ramus of the left fifth foot (PL 14, fig. 81), but other- 

 wise conforms to Giesbrecht 's description. 



Heterorhabdus longicornis Giesbrecht. 



PL 13, fig. 74. 

 The male was taken previous to the past summer (Esterly, 

 :05, p. 186). One female was obtained in Coll. 1030. 

 Length : Female, 3.4 mm. 

 Coloration : Translucent, without pigment. 



Heterorhabdus spinifrons Clans. 



PI. 14, fig. 93. 

 The female was obtained in 1904 (Esterly, :05, p. 183), and a 

 male was taken in 1905 in Coll. 1030. 

 Length : Female, 3 mm. 

 Coloration : Translucent and without pigment. 



