136 University of California Publications. [ ZooLocy 
metrical. Anterior antennae much longer than body, 23-jointed 
(joints 1 and 2, 8 and 9 fused) ; rami of posterior antennae equal 
in length; mandible not longer than the maxilla. Swimming 
feet short, rami of first pair 2-jointed, of second to fourth pairs 
3-jointed. Fifth foot (fig. 106) uniramous, present on both sides, 
each 3-jointed; second joint with one plumose bristle, third with 
two; a thicker bristle at end of third joint, plumose on inner 
border. 
4 Anterior antennae shortened; fifth foot on the left side 
2-jointed. 
Left. fifth foot Diramous oc. a: ass ovav uaee se ee 4 
Both feet ot itthpair gmiramous, 2.12 cs. eee 2 
1. Rhinealanus nasutus Giesbrecht. 
Rhincalanus nasutus Giesbrecht, 1888, p. 334; 1892, pp. 152, 160; 
pl. 3, fig. 6; pl. 9, figs..6, 14; pl. 12, figs. 9-12, 14, 16, 17; 
pl. 35, figs. 46, 47, 49; 1898, p. 22. 
| 
Fig. 10.—Rhincalanus nasutus. (a) Female, dorsal, X18. (b) Fifth foot 
of female X 260. 
2 Front of head elongated; indented on the sides (fig. 10a) ; 
rostral filaments ventral, not visible from above. Fifth foot with 
one bristle on second joint, three on third (fig. 100.) 
4 Right fifth foot with strongly curved bristle at end; left 
with long outer ramus reaching almost to end of inner ramus. 
