. Bulletin - United States National Museum. Science. COPEPODS OF THE WOODS HOLE REGION 33 Male.—Head triangular, without the marginal indentations, but narrowed somewhat anteriorly; genital segment wider than long; urosome 4-segmented; caudal rami and second antennae as in the female; both fifth legs present, the tip of the right leg scarcely reaching the center of the second segment of the left leg. Total length, mm. Rennarks.—^^Vlieeler secured a single female of this species at the surface in the Gulf stream south of Marthas Vineyard. It is pelagic and not likely to be found anywhere
. Bulletin - United States National Museum. Science. COPEPODS OF THE WOODS HOLE REGION 33 Male.—Head triangular, without the marginal indentations, but narrowed somewhat anteriorly; genital segment wider than long; urosome 4-segmented; caudal rami and second antennae as in the female; both fifth legs present, the tip of the right leg scarcely reaching the center of the second segment of the left leg. Total length, mm. Rennarks.—^^Vlieeler secured a single female of this species at the surface in the Gulf stream south of Marthas Vineyard. It is pelagic and not likely to be found anywhere near shore. EUCALANUS MONACHUS Giesbrecht FiGUKE 17 Eucalanus monachus Giesbeecht, Fauna und Flora des Golfes von Neapel, vol. 19, p. 132, pis. 11, 35, 1892. Occurrence.—A single male was taken by Wheeler in the Gulf Stream south of Marthas Vineyard; no specimens were found in Rath- bun's collections. Distnbution.—Western Mediter- ranean (Giesbrecht); Malay Archi- pelago (Cleve); South Africa (Cleve) ; Adriatic (Steuer) ; Indian Ocean off Ceylon (Thompson and Scott) ; Gulf Stream south of Marthas Vineyard (Wheeler). Color.—This species has never been examined while alive, and hence its color remains unknown. Female.—Head semielliptical and not triangular; forehead elongated and evenly rounded; fifth segment with rounded posterior corners; genital segment wider than long; urosome 3-segmented; caudal rami slightly asymmetrical, second in- ner seta of left ramus elongated; proximal segments of second an- tenna twice as long as wide and shorter than the distal segment. Total length, mm. Male.—Head evenly rounded anteriorly; third thoracic segment with a pair of stout setae at each posterior corner, which stand out prominently from the sides of the body. Right fifth leg lacking, left one 4-segmented. Total length, mm. Remarks.—^Wlieeler's single male still remains the only specimen thus far obtained from the Woods Hole area. The species can be recognize
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