. Calanoid copepods of the genera Spinocalanus and Mimocalanus from the central Arctic Ocean, with a review of the Spinocalanidae / David M. Damkaer. Copepoda Arctic Mimocalanus sulcifrons, male Figure 214. Figure 215. -Habitus, lateral view; scale A. -Habitus, dorsal view; scale A. Description Pi Ri with 2 inner setae; P2 Ri2 with 1 outer seta; P3-P4 Ri3 with 1 outer seta. Female.—Length mm (Figs. 192, 193). Prosome in dorsal view ovoid; head broadly rounded, with slight anterior protrusion and 2 indistinct dor- solateral swellings. In lateral view with abrupt forward slope.
. Calanoid copepods of the genera Spinocalanus and Mimocalanus from the central Arctic Ocean, with a review of the Spinocalanidae / David M. Damkaer. Copepoda Arctic Mimocalanus sulcifrons, male Figure 214. Figure 215. -Habitus, lateral view; scale A. -Habitus, dorsal view; scale A. Description Pi Ri with 2 inner setae; P2 Ri2 with 1 outer seta; P3-P4 Ri3 with 1 outer seta. Female.—Length mm (Figs. 192, 193). Prosome in dorsal view ovoid; head broadly rounded, with slight anterior protrusion and 2 indistinct dor- solateral swellings. In lateral view with abrupt forward slope. Th4 and Th5 separate. Prosome length 4! 2 times urosome. Genital segment length two-thirds times width, protruding ventrally one-third depth of rest of urosome. Caudal rami length 1 Vi times width. Inner caudal seta reduced. Al exceeding caudal rami by 4 segments; terminal segments (Fig. 162) relatively wide, large. Armature as Table 4. Mn B2 with 3 inner setae. Mn blade (Fig. 195) with 1 long ventral tooth, followed by 4 bi- or tricuspids of decreasing length, slender dorsal bicuspid, and dorsal seta. Mxl gnathobase (Fig. 196) without proximal posterior setae; proximal anterior seta thin and finely plumose; distal anterior seta on left only, reaching beyond margin. Proximal part of Ri with 8 proximal and 3 distal setae. Mxp (Fig. 202) Bl inner anterior surface with midlength cluster of few denticles and distal series l short thin setules; distal knob with 4 setae and short truncate process. B2 proximal anterior surface with short longitudinal row of short, relatively thick spines of irregular length, paralleled by very short, thin spinules. Ri2-5 inner setae and terminal seta, nude. Ri4-5 outer setae moderately long, with very long plumes on each side. PI (Fig. 198) B2 and Rel outer distal edge with 2-8 small teeth. Main body of Re2 outer spine just reaching base of Re3 outer spine; Re3 outer spine narrow. Ri outer lobe moderate. P2 (Fig. 199) B2 outer distal edge with 3-4
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