Vou.2] Hsterly—Copepoda of the San Diego Region. 217 
Coloration: Often distinetly green-yellow tint to body, which 
is not very transparent. 
Leneth: Female, 1.2 mm.; male, about 0.8 mm. 
Oceurrence: A few were taken June 14, 1904, and in some 
cases the sexes were pairing. 
2. Oncaea minuta Giesbrecht. 
Oncaea minuta Giesbrecht, 1892, p. 603, pl. 47, figs. 3, 6, 26, 46, 59. 
Oncaea minuta (male) Aurivillius, 1899, p. 29, figs. 1-3. 
Fig. 56.—Oncaca minuta. Female. (a) Lateral 140. (0b) Posterior 
maxilliped X265. (c¢) Posterior antenna X 265. 
? Genital segment longer than the rest of the abdomen, the 
following segments broader than long; furea shorter than the 
fifth abdominal segment, less than twice as long as broad, inner- 
most terminal bristle shorter than the outermost. Posterior an- 
tennae retrograded; terminal hook of posterior maxillipeds, and 
the distal bristles of the second basal provided with spines. Outer 
ramus of swimming feet narrow, end joint of Inner ramus even 
in the fourth with terminal processes and smooth proximal outer 
marginal bristle. 
4 Unknown (?) 
Coloration: Reddish throughout body; eggs red. 
Length: Female, 0.46-0.5 mm. 
Occurence: Rather uncommon; a few come during the sum- 
mer. 
