. Bulletin - United States National Museum. Science. Fiu. 247.—Meinertia <;ilbekti. X 27^. b, FlEST MAXILLA. : X 15}. Second maxilla. |. c, Maxilliped. 242 BULLETIN 54, UNITED STATES NATIONAL MUSEUM. second pair consist of eight joints and reach the posterior margin of the head. The lirst four segments of the thorax are about equal in length, the second being somewhat shorter. The last three segments decrease gradually in length. The epimera are narrow pieces at the sides of the segments; in the first five segments they do not reach the pos- terior margin of the seg- ments, although the fif
. Bulletin - United States National Museum. Science. Fiu. 247.—Meinertia <;ilbekti. X 27^. b, FlEST MAXILLA. : X 15}. Second maxilla. |. c, Maxilliped. 242 BULLETIN 54, UNITED STATES NATIONAL MUSEUM. second pair consist of eight joints and reach the posterior margin of the head. The lirst four segments of the thorax are about equal in length, the second being somewhat shorter. The last three segments decrease gradually in length. The epimera are narrow pieces at the sides of the segments; in the first five segments they do not reach the pos- terior margin of the seg- ments, although the fifth pair more nearly reach the posterior margin than the others; the epimera of the last two segments reach quite to the posterior margin. The first segment of the abdomen is as wide as the last thoracic segment. The others are wider, increasing in width gradually to the terminal segment. The last seg- ment is about three times as broad as long, and quadrangular in shape. The uropoda are short, reaching only a little beyond half the length of the abdomen; both branches are alike and of equal length. The legs all terminate in long recurved unguli. There is no high carina developed on the basis of any of the legs. Color reddish brown. Three specimens, two males and one female, were collected l)y Prof. C. H. Gilbert at Mazatlan. They were found in the mouth of MugU liospes. Typ r. —C a t. No. 2 9 0 8 0 , This species difi'ers chiefl}^ from (iudichaud!i{^i\\nQ, Edwards)" from near locality, in the al)sence of high carinte, which in M. gandichmidii are strongly devel- oped on the last four pairs of legs; in the much shorter uropoda, which in If. gcuidichaudii extend bej^ond the terminal segment, both branches of which are narrowly pointed at their extremities; in the much larger eyes, and in the smaller size of the species, the adult female being only half the size of the adult female of M. gaudichaudii. «Naturhi8torisk Tidyskrift, XIV, 1883-84, pp. 335-340, pi.
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