i re a a 
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vou.2] Esterly—Copepoda of the San Diego Region. 1 
It should be noted that not a male specimen of Metridia has 
been taken in any eatch, so far as I have examined them, and 
rather particular attention has been paid to this point. 
Sub-fam. LucIcurTmuNas. 
Leuckartiina Giesbrecht, 1892, p. 62. 
2 Cephalothorax with five segments, fourth and fifth thoracic 
segments fused, rostral filaments thin and usually soft; abdomen 
with four segments, symmetrical. The second joint of the ante- 
rior antenna is divided, and the twenty-fourth joint is separate 
from the twenty-fifth. Outer ramus of posterior antennae 8- 
jointed, the four following appendages like those in the Cala- 
nidae. The first four pairs of feet almost always with 3-jointed 
rami, the fifth pair like the preceding ones and that of Centro- 
pages, with 3-jointed outer ramus and 2- to 3-jointed inner 
ramus. 
& (Known only in Lucicutia.) Grasping antenna the left ; 
distal to the geniculation the nineteenth to twenty-first, and 
twenty-second and twenty-third joints are fused; fifth pair of 
feet without forceps, basals 2-jointed, the right with 2-, the left 
with 3-jointed rami; no other sexual differences except in form 
of body. 
1. Genus Lucicutia Giesbrecht. 
Leuckartia Claus, 1863, p. 182. 
Leuckartia (in part) Brady, 18838, p. 50. 
Leuckartia Giesbrecht, 1892, pp. 62, 358; 1895, p. 25 
Lucicutia Giesbrecht, 1898, p. 110. 
Lucicutia Steuer, 1904, p. 596. 
Lucicutia Wolfenden, 1904, p. 121. 
oO 
Head broad; furca symmetrical. First lobe on outer border 
of maxilla with five bristles. 
© Five segments in cephalothorax, abdomen with four, sym- 
metrical. Rostral filaments slender, situated on a papilla. Pos- 
terior antennae like those of Centropages, but with eight joints 
in outer ramus. Blade of mandible weakly built, outer ramus 
bent rather far proximally. Outer border lobes of maxilla with 
only five bristles; inner border lobes well developed, the proximal 
one, however, with weak masticatory bristles. Inner ramus 2- 
jointed, articulated with basal; outer ramus large, oval. Distal 
