. Bulletin - United States National Museum. Science. 356 BULLETIN 15 8, UNITED STATES NATIONAL MUSEUM Distribution.—Gulf Stream south of Marthas Vineyard (Wheeler); Malay Archipelago (Cleve); Messina, Nizza (Claus); French coast (Gourret); South Atlantic, Mediterranean (Giesbrecht); North Atlantic (Cleve); Ked Sea, Indian Ocean (Thompson and Scott); Adriatic (Steuer, Pesta); Chesapeake Bay (Wilson). Color.—Body rather opaque, with a variable extent of red, yellow- ish-red, and yellow pigment, especially in the region of the mouth, in the winglike extensions of the posterior metasome segments,
. Bulletin - United States National Museum. Science. 356 BULLETIN 15 8, UNITED STATES NATIONAL MUSEUM Distribution.—Gulf Stream south of Marthas Vineyard (Wheeler); Malay Archipelago (Cleve); Messina, Nizza (Claus); French coast (Gourret); South Atlantic, Mediterranean (Giesbrecht); North Atlantic (Cleve); Ked Sea, Indian Ocean (Thompson and Scott); Adriatic (Steuer, Pesta); Chesapeake Bay (Wilson). Color.—Body rather opaque, with a variable extent of red, yellow- ish-red, and yellow pigment, especially in the region of the mouth, in the winglike extensions of the posterior metasome segments, and in the genital segment; eye dark red; eggs yellowish, turning red with development. Feirmie.—Head separated from first segment; third and fourth segments fused dorsally, the lappets on the third segment not reach- ing the genital openings; gen- ital segment and abdomen fused, spindle-shaped, widest through the genital openings, strongly tapered at both ends; caudal rami about half as long as urosome, and nearly parallel. Distal exo- pod segment of first three pairs of legs with three outer sjjines; endopod of fourth leg a small knob with one apical seta. Total length, mm. Male.—Head more or less fused with first segment; gen- ital segment and abdomen separated; posterior half of genital segment not tapered but forming prominent rounded corners, each with a stout plumose seta on its ventral surface; caudal rami half as long as ucosome. The tooth on the inner margin of the second segment of the posterior antenna of the female replaced in the male by minute spinules. Total length, mm. Remarks.—Judged from the distribution given above, this is somewhat of a tropical species, and it probably comes into the present area by way of the Gulf Stream, in which it was found by Wheeler. CORYCAEUS OBTUSUS Dana Figure 215 Corycaeus ohtusus Dana, Proc. Amer. Acad. Arts and Sci., vol. 2, p. 39, 1849.— Giesbrecht, Fauna und Flora des Golfes von Neapel, vol. 19,
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