. Bulletin - United States National Museum. Science. OOPEPODS OF THE WOODS HOLE REGION 253 segmented in male; genital segment divided in the male, undivided in female; caudal rami longer than the anal segment and slender. First antennae long and slender, 7-segmented, twice geniculate in the male; second antennae with the basal endopod segment divided and the 1-segmented exopod attached at the joint. Maxillipeds strongly developed, the terminal claw slender, sinuate, pectinate near its tip, and accompanied by an outside spine. Exopods of swimming legs 3-segmented, endopods 2-segmented, both ram
. Bulletin - United States National Museum. Science. OOPEPODS OF THE WOODS HOLE REGION 253 segmented in male; genital segment divided in the male, undivided in female; caudal rami longer than the anal segment and slender. First antennae long and slender, 7-segmented, twice geniculate in the male; second antennae with the basal endopod segment divided and the 1-segmented exopod attached at the joint. Maxillipeds strongly developed, the terminal claw slender, sinuate, pectinate near its tip, and accompanied by an outside spine. Exopods of swimming legs 3-segmented, endopods 2-segmented, both rami with the setae reduced in number; the two segments of the fifth legs completely fused into a single triangular lamella, without distinction of parts, LEPTASTACUS MACRONYX (T. Scott) Figure 165 Tetraffoniceps macronyx T. Scott, 10th Ann. Rep. Fishery Board Scotland, pt. 3. p. 253, pi. 10, 1892. Leptastacus macromjx Sabs, Crustacea of Nor- way, vol. 5, p. 417, suppl. pi. 40, 1911. OcmjLt^ence.—A few specimens of both sexes were washed from the sand on the shore of Katama Bay, Marthas Vineyard, August, 1927. Distribution.—Scottish coast (T. Scott) ; Norwegian coast (Sars). Color.—Body transparent and colorless, without pigment markings; eye invisible. Female.—Cephalic segment one-fourth the body length; rostrum spindle-shaped with a minute seta on each lateral margin near the center; urosome seven-tenths as long as metasome, slightly tapered pos- teriorly; genital segment not divided, nearly as long as the two basal abdominal segments combined; caudal rami slender, almost five times as long as wide, somewhat divergent and tapered distally, each with two apical setae, one outer, one inner, and one dorsal, all at the apex. First antennae reaching the fourth thoracic segment, their three basal segments equal in length, and together twice the length of the other four segments. Endopod of first legs longer, of second, third, and fourth legs shorter, than the exopod; basal seg
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