. Bulletin - United States National Museum. Science. COPEPODS OF THE WOODS HOLE REGION 223 Distribution.—Coast of Norway (Sars). Color.—Body whitish and transparent, without pigment mark- ings of any sort; eye deep ruby red. Female.—Body rather slender; cephalic segment half the length of the metasome; rostrum very long and narrow, curved downward, and sharply pointed; urosome about as long and nearly as wide as metasome; genital segment with scarcely a trace of division; caudal rami quadrangular, wider than long, apical setae only slightly thick- ened at their bases; exopod of first legs a tr
. Bulletin - United States National Museum. Science. COPEPODS OF THE WOODS HOLE REGION 223 Distribution.—Coast of Norway (Sars). Color.—Body whitish and transparent, without pigment mark- ings of any sort; eye deep ruby red. Female.—Body rather slender; cephalic segment half the length of the metasome; rostrum very long and narrow, curved downward, and sharply pointed; urosome about as long and nearly as wide as metasome; genital segment with scarcely a trace of division; caudal rami quadrangular, wider than long, apical setae only slightly thick- ened at their bases; exopod of first legs a trifle shorter than the basal endopod segment, middle segment without an inside seta; distal seg- ment of third exopod with three spines and three setae; distal segment of fifth legs elongate-ovate, pointed at the tip, with six setae, the second and third inner ones filiform; basal expansion narrow triangular, reach- ing beyond the center of the distal segment, with five setae, the four in- ner ones equal. Total length, mm. Male.—Second basipod of first legs with a long spine at the inner corner, reaching beyond the center of the basal endopod segment; second endo- pod as long as the exopod with a short apical spine and two long outer spines, reaching beyond the tip of the apical one; distal segment of fifth legs short, as wide as long, with five setae, the two terminal ones filiform, basal expansion reaching the tip of the distal segment, with two equal setae. Total length, mm. Remarks.—As Sars has pointed out, this species resembles longi- rostrls, but it has a broad shallow sinus on the lateral margins of the cephalic segment at the anterior corner, and the first legs of the male are markedly different. The specimens from Cuttyhunk Harbor were living on the outside surface of compound ascidians on the piles of the Figure 150.—Amphiuscus sinuatus: a, Male, second leg; b, female, fifth leg; c, male, fifth leg AMPHIASCUS DACTYLIFER, new spec
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