. Bulletin - United States National Museum. Science. ISOPODS OF NORTH AMERICA. 131 TjxuditirH.—West Indies; Gulf ol" Mexico: Caril)})can Sea; Mouth of Exuma Sound; Bay of Bengal. Depth.—955 fathoms; 740 fathoms. Body o])lono--ovate. nearly two and a half tinx's lonoej- than wide, 38 mm. : IHi mm. Head wider than long-, Vl nun. : "21 mm., with the anterior maruin produced in a median point which meets the apex of th(^ triangular frontal lamina. The eyes are lart^e, composite, and are situ- ated on the inferior side of the head. The tirst pair of antennn have the basal article larjje.
. Bulletin - United States National Museum. Science. ISOPODS OF NORTH AMERICA. 131 TjxuditirH.—West Indies; Gulf ol" Mexico: Caril)})can Sea; Mouth of Exuma Sound; Bay of Bengal. Depth.—955 fathoms; 740 fathoms. Body o])lono--ovate. nearly two and a half tinx's lonoej- than wide, 38 mm. : IHi mm. Head wider than long-, Vl nun. : "21 mm., with the anterior maruin produced in a median point which meets the apex of th(^ triangular frontal lamina. The eyes are lart^e, composite, and are situ- ated on the inferior side of the head. The tirst pair of antennn have the basal article larjje. about as wide as lono-; the sec- ond is about as lono* as the tirst; the third is half as long as the second; there is a small scale articulated to the end of the third article of the peduncle; the tiagellum is composed of forty-six articles and extends one-fourth the length of the tirst thoracic segment. The sec- ond pair of antenna? have the tirst article short; the second is almost at right angles to the tirst and is about 2 mm. long; the third is about as long as the sec- ond; the fourth is about 3 mm. in length; the fifth is 4 nun. long. The flagellum is composed of about sixty-six articles and ex- tends to the middle of the fourth thoracic segment. The maxillipeds are composed of seven articles. The frontal lamina is triangular in shape, with the apex contiguous with the median point of the frontal mai'gin of the head. The tirst segment of the thorax is the longest, being 1(> mm. in length. The second and third arc subequal. and each is 6 nnn. long. The fourth and tifth are each 5 mm. in length. The sixth and seventh are each 4 nmi. long. The epimera are distincth^ separated on all the segments with the exception of the tirst, and are large plates with th<» outer post-lateral angle produced in the last four ])eyond the posterior margin of the segments. The six segments of the abdomen are distinct, the tirst live being subequal in length. The sixth or terminal s
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
