7 a... oe oO tst—‘_aOS 
Vou.2] Esterly—Copepoda of the San Diego Region. Nit 
einal bristle in first pair and with outer marginal in first and 
fourth. Fifth pair with basal of two joints and 3-jointed outer 
ramus. Inner ramus lacking, inner marginal bristle of middle 
joint of outer ramus thick and long; terminal joint shortened, 
its distal margin toothed (fig. 430). 
é Like female except in structure of anterior antennae and 
fifth feet. Abdomen with 5 segments. Left anterior antenna 
20-jointed, geniculating between joints 17 and 18. Fifth feet 
each with 2 basals, and 3-jointed outer rami, the right foot has 
a rudimentary inner ramus, broad and without spines. Second 
basal of each foot with a long, slender plumose bristle. 
1. Phyllopus bidentatus Brady. 
Phyllopus bidentatus Brady, 1883, p. 78, pl. 5, figs. 7-16. 
Phyllopus bidentatus Giesbrecht, 1892, p. 419, pl. 18, figs. 25-33; 
pl. 38, fig. 35; 1898, p. 124. 
Phyllopus bidentatus & Wolfenden, 1904, p. 124, pl. 9, fig. 16. 
Fig. 43.—Phyllopus bidentatus. Female. (a) Lateral X18. (b) Fifth foot 
X195. 
With the generic characters. Both Giesbrecht (1892) and 
Wolfenden (1904) state that the ‘‘bidentate’’ lateral portion of 
the last thoracic segment does not exist as in Brady’s descrip- 
tion. The San Diego specimen agrees with the description of 
the two former authors. The male of the species is described 
by Wolfenden as cited, and the above description is taken 
from him. 
Coloration: Transparent, without pigment. 
