ii'ii I Esterly : Copepoda of tht San Diego Region. 335 



Genus Paraugaptilus Wolfenden. 

 Paraugaptilus buchani Wolfenden. 



PI. 26, Bg. 6j pi. 28, fig. 39; pi. 29, fig. 57; pi. 31, figs. 94, 98. 



Paraugaptilus buchani, Wolfenden (1904), p. 123, pi. 9, figs. 44, 45. 

 Arietellus buchani, Nurs (1907), |>. 20. 

 Paraugaptilus buchani, Farran (1908), p. 82. 



Adult female. The specimens that I have agree fully with 

 Wolfenden's description. His statement that the genus "seems 

 to partake of some of the characters" of both Arietellus and 

 Augaptilus seems tn lie correct. Sars (1907, p. :2(i) has trans- 

 ferred the forms to Arietellus, hut it is hard to see how they 

 can properly belong to that genus when they have the character- 

 istic appendages of Augaptilus on the bristles of the maxillipeds. 

 The fifth feet (pi. 31, fig. 94) are a good deal like those of Arie- 

 tellus and not at all as in Augaptilus. 



The animals are easily recognized by the lemon-yellow color 

 when alive; it is found in the feet, the last two thoracic seg- 

 ments, the abdomen and mouth-parts, and in the last two joints 

 of the anterior antenna. Another noticeable feature is the 

 enlargement, or clubbing, of the end joint of the antenna I pi. 31, 

 fig. 98). Other characteristic marks are shown in the figures. 



Length : 3.153 mm. 



Coloration : Lemon-yellow as described. 



Occurrence: Station 1303, tow at, and vertical from, 315 f., sounding 

 340 f., July IS, 1906; station 1315, tow at, and vertical from, 320 t\, sound- 

 ing 330 f., .Inly 19, 1906. 



Genus Arietellus Giesbrecht. 

 Arietellus setosus Giesbrecht. 



PI. 27, figs. 22, 23; pi. 30, figs. 81, 82. 



Arietellus setosus, Giesbrecht (1892). p. 415. pi. 20, tigs. 1, 3-7, 9-13; 

 pi. 30, figs. 34-36; 1S9S, p. 124. 



Adult male. The female has been recorded previously from 

 this region (Esterly, 1905, p. 189). The male resembles the 

 female in the form of the body, but the sexes can easily he sep- 

 arated because the male has the large pair of fifth feet (pi. 30, 

 figs. 81. 82). 



