. Bulletin - United States National Museum. Science. 190 BULLETIN 129, UNITED STATES NATIONAL MUSEUM ambulatory legs, of which the first is longer than the rest, have strongly recurved dactyli. Abdomen of seven separate segments in both sexes. Off Porto Rico; Zanzibar; Karachi, India. MENAETHIOPS PORTORICENSIS Rathbun Plate 49, figs. 1 and 2 Menaethiops portoricensis Rathbun, Proc. U. S. Nat. Mus., voL 64, art. 14, 1924, p. 2 (type-locality, Porto Rico; 13^ miles S. of Cana Gorda Islands, near Guanica Harbor; 26 fathoms; female, holotype, F 2628, Amer. Mus. Nat. Hist.). Diagnosis.—Rostrum near
. Bulletin - United States National Museum. Science. 190 BULLETIN 129, UNITED STATES NATIONAL MUSEUM ambulatory legs, of which the first is longer than the rest, have strongly recurved dactyli. Abdomen of seven separate segments in both sexes. Off Porto Rico; Zanzibar; Karachi, India. MENAETHIOPS PORTORICENSIS Rathbun Plate 49, figs. 1 and 2 Menaethiops portoricensis Rathbun, Proc. U. S. Nat. Mus., voL 64, art. 14, 1924, p. 2 (type-locality, Porto Rico; 13^ miles S. of Cana Gorda Islands, near Guanica Harbor; 26 fathoms; female, holotype, F 2628, Amer. Mus. Nat. Hist.). Diagnosis.—Rostrum nearly half as long as remainder of cara- pace, its spines widely divergent. Two marginal, hepatic spines. Description.—Surface of carapace and appendages in large part covered with broad, flattened vesicles the largest of which are spatuliform. These are so varied in size, shape, and disposition that at first sight they appear like foreign bodies. Carapace constricted behind orbit and be- hind hepatic regions. Gastric, cardiac, and intestinal regions tumid, and tuberculate or granulate; four tubercles form a transverse diamond on the gastric region. Rostrum slender, divided in its middle into two widely divergent, slightly curved and tap- FiG. poRTORi- ^ring homs; basal half of rostrum with a cENsis, MALE (56012), ENDOPODiTE mediau furrow. Preocular spine suberect, OF MAXILLIPED, X . , ,, ,. ,. , promment; nearer the median Ime may be seen a smaller spine of the basal antennal article. On the lateral margin of the hepatic region there are two slender spines; on the branchial region near its anterior end and a little above the margin there is a small, acute spine, while near the lat- eral angle of the carapace is the largest spine of all. The ornamentation of the carapace is considerably obscured by the vesicular pubescence. rSesides a pj^ 77.—menaethiops portoricensis, male (50012), chela, long, slender, cylindrical m"^"™ enlarged spine at th
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