. Bulletin - United States National Museum. Science. 532 BULLETIN" 15 8, UNITED STATES NATIONAL MUSEUM Male.—Body slender, cylindrical, and distinctly segmented; head separated from first segment, without a carapace; first and second thoracic segments as wide as head, the others considerably narrower and passing insensibly into the abdomen, which is made up of four segments; caudal rami elongate and cylindrical. First antennae 6-segmented; second antennae 2-segmented, each tipped with two clawlike spines; second maxillae stout and armed with strong spines; maxillipeds small and feeble. A
. Bulletin - United States National Museum. Science. 532 BULLETIN" 15 8, UNITED STATES NATIONAL MUSEUM Male.—Body slender, cylindrical, and distinctly segmented; head separated from first segment, without a carapace; first and second thoracic segments as wide as head, the others considerably narrower and passing insensibly into the abdomen, which is made up of four segments; caudal rami elongate and cylindrical. First antennae 6-segmented; second antennae 2-segmented, each tipped with two clawlike spines; second maxillae stout and armed with strong spines; maxillipeds small and feeble. A single species within the present area. PHILICHTHYS XIPHIAE Steenstrup Figure 316 Phyliclithys xiphiae Steenstrup, Kongl. Vid. Selsk. Forh. 1861, p. 295, pi. 2, 1862. Bebgsoe, Naturh. Tidsskrift, ser. 3, vol. 3, p. 87, pi. 13, 1864. Occurrence.—Found free in the mucous canals of the head of the common swordfish captured off Marthas Vineyard. Distribution.—Kattegat (Steenstrup, Bergsoe); Mediterranean (Kichiardi, Vall'e, Carus); Belgian coast (Beneden); New Zealand (Thomson); English seas (T. and A. Scott) ; New England coast (Goode, Rathbun, Lin- ton). Color.—Body white, becom- ing a faint salmon-pink on the swollen lobes of the ante- rior thorax. The digestive canal shows as a dark line through the center of the body. The eggs are oliva- ceous, deepening with develop- ment ; the eye is reddish. Female.—Anterior cephalo- thorax composed of three small segments, the first very minute, the second bearing the mouth opening and the dor- sal eye and anteriorly a knob- like process on each side of the first segment, the third segment larger with two dorsal processes on each side. Second and third thoracic segments enlarged into a disk, whose width is one-third the length of the whole body, each segment with a pair of irregularly branched ventral processes. Fourth, fifth, and genital segments about the same width and much narrower than the second and third segments, each wit
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