. Bulletin - United States National Museum. Science. Fig. 171.—.EGA sym- metrica. Third LEG. X llf. has one long spine at the outer distal angle. The following four pairs of legs are long and slender, furnished with hairs at the distal extremity of the joints and armed with few spines. The tirsttivo segments of the abdomen are short, the first is shortest, and the fifth the longest in the median dorsal line. The terminal or sixth segment of the abdomen is linguiform and rounded posteriorly with serrulated margin. The uropoda extend a little beyond the posterior margin of the terminal abdominal


. Bulletin - United States National Museum. Science. Fig. 171.—.EGA sym- metrica. Third LEG. X llf. has one long spine at the outer distal angle. The following four pairs of legs are long and slender, furnished with hairs at the distal extremity of the joints and armed with few spines. The tirsttivo segments of the abdomen are short, the first is shortest, and the fifth the longest in the median dorsal line. The terminal or sixth segment of the abdomen is linguiform and rounded posteriorly with serrulated margin. The uropoda extend a little beyond the posterior margin of the terminal abdominal segment; the outer branch is narrow, ovate, and pointed at the distal extremity; the inner branch is almost twice as wide as the outer one; both have serrulated margins. Four specimens come from the U. S. Bureau of Fisheries steamer Albatross station 4228, vicinity of Naha Bay, Behm Canal, southeastern Alaska, and one from Alhatross station 4199, Queen Charlotte Sound, off Fort Rupert, Vancouver Island, British Columbia, at depths of 41 to 107 fathoms. The type specimen is in the U. S. National Museum (Cat. No. 29247). The following note by Mr. Harold Heath accompanies the Fort Rupert specimen: "Ej^es black. Rusty-brown spots on dorsal surface. Ver- milion-colored ovary (?) shows through translucent ; Onl}^ two other species of ^-Eija are known in the Pacific coast fauna of North America, ^Ega lecontu'iDanay^ and ^E'ga m Icrophthalma Dana.* The present species differs from ^Ega Jeayntli^ (1) in the greater length of both pairs of antennae; those of the first pair reach to the posterior margin of the first thoracic segment, instead of to the end of the peduncle of the second pair or almost to the posterior margin of the head, and those of the second pair reach to the middle of the third thoracic seg- ment instead of almost to the posterior mar- gin of the first; (2) in having neither the basal joints of the peduncle of the first pair of an- tenna" great


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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience