216 University of California Publications. | ZooLoGy 
One on the first and second, three on the third joint; of the third 
and fourth feet, one on the first and second, two on the third 
joint. 
4 Abdomen with five segments, genital segment large, lips 
of the orifice with spines at the sides. Posterior maxilliped with 
more muscular second basal, and more strongly curved terminal 
hook than in the female. In the anterior antennae the three 
short terminal joints are fused into one piece. 
1. Oncaea conifera Giesbrecht. 
Antaria mediterranea Claus, 1863, p. 159, pl. 30, figs. 1-7. 
Oncaea conifera Giesbrecht, 1892, pp. 591, 603, pl.°2, fig. 10; pl. 
47, figs. 4, 16, 21, 28, 34, 38, 42, 55, 56. 
Fig. 55.—Oncaea conifera. Female. (a) Lateral X45. (b) Posterior 
maxilliped 265. 
2 Median portion of second thoracic segment protruding 
from the dorsal surface of the body (fig. 55a), genital segment 
almost one and one-half times as long as the rest of the abdomen, 
the following segments broader than long. Furea as long as 
the fifth abdominal segment, between two and two and one-half 
times as long as broad, its branches strongly directed away 
from each other. Hook at end of posterior maxilliped set with 
thick spines, distal bristles of second basal heavier and longer 
than the proximal (fig. 555). Processes at end of third joint 
of inner ramus of swimming feet very large, present even in the 
fourth pair, the adjacent lancet-like bristle shortened. Fifth pair 
of feet elongated, with thickened terminal bristle. 
& Lips of genital orifice long, furea short and broad. 
