Candacia varicans Giesbrecht, 1892 



FAMILY PONTELLIDAE 



Occurrence 



Sta. 3. 1 adult female, 2.50 mm. 

 Sta. 7. 1 adult female, 2.80 mm. 



Remarks 



The female is recognized by the symmetrical 

 genital segment, the fifth pair of legs, and the 

 shape of the manibular blade (see Grice, 

 1962, plate 31, figs. 8, 10, and 13). 



Candacia longimana Glaus, 1863 



Occurrence 



Sta. 3. 1 adult male, 3.19 mm. 

 Sta. 5. 1 adult male, 3.20 mm. 

 Sta. 7. 1 adult male, 3.55 mm. 



Remarks 



The male of this species can be identified by 

 the spinif orm process on the right posterolateral 

 margin of the meta&ome, the conical process 

 on the right margin of the genital segment, 

 and the structure of the fifth pair of legs (see 

 Grice, 1962, plate 28, figs. 6, 8, 11, and 12). 



Parucandacia bispinosa (Glaus, 1863) 



Occurrence 



Sta. 3. 14 adult females, 1.74 to 1.91 mm. ; 



12 adult males, 1.88 to 1.94 mm. 

 Sta. 5. 20 adult females, 1.74 to 2.01 mm. ; 



17 adult males, 1.94 to 2.11 mm. 

 Sta. 7. 9 adult females, 1.84 to 1.91 mm.; 



5 adult males, 2.04 to 2.11 mm. 



Remarks 



This species is one of the most common from 

 the southern .stations. The genital segment of 

 the female is nearly triangular when viewed 

 from above. Each side of the segment is pro- 

 duced into a small spine ; the spine of the left 

 side is longer and directed backward. The male 

 can be distinguished by the shape of the genicu- 

 lated portion of the right antennule. These 

 characters have been figui'ed by Grice (1962). 



The species was transferred by Grice (1963) 

 from the genus Ca7idacia to his new genus 

 Pai-acaiidacia. 



CALANOID COPEPODS FROM NORTH PACIFIC 



Pontellopsis regalis (Dana, 1849) 

 (Plate 13, figs. 1-14) 



Occurrence 



Sta. 3. 1 adult female, 3.20 mm. 



Description of Female 



The total length is 3.20 mm. The ratio of 

 the prosome to the urosome is 4.6:1. The first 

 metasomal segment is separated from the ceph- 

 alosome. The forehead in dorsal aspect (fig. 1) 

 is broadly rounded and has a projection over 

 the base of the rostrum. The last metasomal 

 segment, consisting of the fused fourth and 

 fifth metasomal segments, is produced postero- 

 laterally into acute spiniform processes di- 

 rected backward. In dorsal aspect these proc- 

 esses appear to reach two-thirds the length of 

 the genital segment (fig. 2). 



The urosome is 2-segmented. The genital seg- 

 ment in dorsal aspect is slightly asymmetrical. 

 Its width increases toward the posterior mar- 

 gin, where each side is projected posteriorly 

 into a conical process; the right pi-ocess is 

 shorter than the left and has a minute, spini- 

 form bristle at the apex. The anal segment and 

 the caudal rami are symmetrical; their com- 

 bined length is slightly shorter than the genital 

 segment. 



The antennule (fig. 3) is 16-segmented and 

 reaches the middle of the second metasomal 

 segment. The exopod of the antenna (fig. 4) 

 is very small — about one-third the length of 

 the endopod. 



The mandibular blade (fig. 6) has five groups 

 of teeth, in addition to three rows of strong 

 spines on each side. 



The first and second inner lobes of the max- 

 illule (fig. 7) are well developed; the first has 

 6 spines along the internal margin and 10 on 

 the posterior surface, and the second has 3 

 strong spines on the tip. The third inner lobe 

 is small ; it has 3 setae. The basis, endopod, and 

 exopod are fused. 



The maxilla (fig. 8) is strongly developed 

 and has 5 lobes on the basipod. The endopod 

 has 6 strong spines plus 1 small spine. 



The maxilliped (fig. 9) consists of 1-seg- 

 mented basipod and a 4-segmented endopod. 



567 



319-171 O - 68 - 9 



