. Bulletin - United States National Museum. Science. ISOPODS OF NORTH AMERICA. 125 The thoracic segments are subequal. The epimeni arc nai-row, aiid those of the last three or four segments acutely pointed. All the al)doniinal segments are visible in a dorsal view. The ter- minal segment is rounded at the sides and truncate at its extremity, the lateral angles being produced in a short triangular process, between which the posterior margin is distincth' denticulate and ])ears four spines, which are about twice as long as the lateral teeth. The uropoda are short, not reaching the extremity of t
. Bulletin - United States National Museum. Science. ISOPODS OF NORTH AMERICA. 125 The thoracic segments are subequal. The epimeni arc nai-row, aiid those of the last three or four segments acutely pointed. All the al)doniinal segments are visible in a dorsal view. The ter- minal segment is rounded at the sides and truncate at its extremity, the lateral angles being produced in a short triangular process, between which the posterior margin is distincth' denticulate and ])ears four spines, which are about twice as long as the lateral teeth. The uropoda are short, not reaching the extremity of the terminal seg- nuMit, are truncate and crenulat(» on their posterior margins. The uropoda, as well as the ttn-minal segment, are fringed with short hairs. The legs are long and slender and armed with many spines. Color, light brown marked with black spots. Individuals of this species were collected at Isthnms Cove, Catalina Island, California, by the U. S. Bureau of Fisheries stesimer Albatross. ^o. 22565, This species resembles E. (/rlmaldll Dollfus more closely than any other species of the genus. It differs in the following characters: 1. The greater number of joints in the tlagel- lum of the first pair of antennae. In our species there are five joints, while in E. grhnaldil the flagellum is uniarticulate. 2. In the fewer number of joints in the flagel- p,^^ cau- lum of the second pair of antennae Inourspecies r)ATA. last two ab- .1 . ^ 1 , i i! \ •\ • h^ • 7 !•• DOMINAL SEGMENTS. there are only twenty-hve, whde in /i. <jrinml(lu (okeatly enlarged.) the tlagellum consists of thirty-two articles. 3. In the presence of four spines on the posterior margin of the terminal segment. In E. (jrhitaldl! the posterior margin is denticulate. EURYDICE SPINIGERA Hansen. Eiu-jidice s})ii)igerii Hansen, Vidensk. Selsk. Skr. (6), V, 1S90, pp. :5()7-;^fi9, pi. V, figs. 4-4c; pi. vi, figs. 1-lc.—Richardson, Proc. U. S. Nat. Mus., XXIII, 1901, p.
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