. Bulletin - United States National Museum. Science. 398 BULLETIN 54, UNITED STATES NATIONAL MUSEUM. Length of abdomen equal to one-third the length of the entire body, 3 mm.: 9 mm. Head with the front triangularly produced and with two low tuber- cles situated on the anterior margin, one on either side of the median Ime. Eyes situated on the antero-lateral lobes, which are rounded. The first pair of antenna? have the first and second articles equal in length; the third is twice as long as the second; the fourth is but lit- tle longer than half the length of the third. The first pair of antenn
. Bulletin - United States National Museum. Science. 398 BULLETIN 54, UNITED STATES NATIONAL MUSEUM. Length of abdomen equal to one-third the length of the entire body, 3 mm.: 9 mm. Head with the front triangularly produced and with two low tuber- cles situated on the anterior margin, one on either side of the median Ime. Eyes situated on the antero-lateral lobes, which are rounded. The first pair of antenna? have the first and second articles equal in length; the third is twice as long as the second; the fourth is but lit- tle longer than half the length of the third. The first pair of antenna? is longer than the second, the second pair not quite extending to the end of the third article of the first pair of antenna?. The second antennae have the first, second, and third articles subequal; the fourth is a little longer than the third; the fifth is one and a half times as long as the fourth. The flagellum consists of one article one-half as long as the fourth peduncular article. When retracted, the first pair of antenna extend to the middle of the lateral margin of the first thoracic segment. The maxilliped has a palp of three articles. The third and fourth segments of the thorax are the widest and longest. The epimera are firmly united Fig. 444.—edotea with the scgmcnts in all the segments. There is a MoNTosA. Max- j^ijp.]^^ linear depression on either side of each segment, ILLIPED. < 38J. fo I & 1 probably indicating the place where the coalescence has taken place. The lateral margins of all the segments are rounded. The first pair of legs are much shorter than the other six pairs. Alls are prehensile. The abdomen is composed of a single segment. Another coalesced segment is indicated by lateral incisions at the base of the abdomen, and a slight depression extending a short distance inward on either side from these lateral incisions. A depression in the dorsal surface occurs just a little below the place where the lateral incisions are situated, thus givi
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
