. Bulletin - United States National Museum. Science. 452 BULLETIN 15 8, UNITED STATES NATIONAL MUSEUM Anterior portion of dorsal plate quadrangular, a little wider than long, and a half wider than the carapace; posterior portion nar- rower than the anterior, strongly tapered posteriorly and bluntly rounded. Genital segment small, with rather flat sides; abdomen nearly quadrangular, as wide as long; caudal rami short rounded knobs, less than one-fifth the length of the abdo- men. Third legs widely separated, very large, and hood-shaped; fourth legs biramose, divided to their base, the endopod o
. Bulletin - United States National Museum. Science. 452 BULLETIN 15 8, UNITED STATES NATIONAL MUSEUM Anterior portion of dorsal plate quadrangular, a little wider than long, and a half wider than the carapace; posterior portion nar- rower than the anterior, strongly tapered posteriorly and bluntly rounded. Genital segment small, with rather flat sides; abdomen nearly quadrangular, as wide as long; caudal rami short rounded knobs, less than one-fifth the length of the abdo- men. Third legs widely separated, very large, and hood-shaped; fourth legs biramose, divided to their base, the endopod only one-third the length of the exopod, both rami foliaceous and bluntly rounded. Length, without fourth legs, 4—5 mm.; with fourth legs, 6-7 mm. Male.—Short and stocky; carapace as wide and about as long as the body, with smoothly convex margins. Body obovate, one-fifth longer than wide, bluntly rounded posteriorly; genital seg- FiGDEE 284.—Lernan- ment narrower than the free thorax; abdomen thro pus hrevoor- much narrower than the genital segment; caudal tme: Female, dor- ^.^j-^^^ ^ small. Third and fourth legs cylindri- cal, uniramose, bluntly pointed, third pair only half as long as the fourth. Length, excluding fourth legs, 2 mm.; including fourth legs, mm. Remarks.—This species was originally found in Vineyard Sound and is comimon there upon the gills of the menhaden. Beaufort is the only known locality outside the present area, as recorded above. Family EUDACTYLINIDAE Genus KR0YERIA Beneden, 1853 Female.—Head fused with the first segment and covered with a carapace, having lateral and median posterior lobes. In the sinus between the two lobes on each side is a movable styliform process, attached on the dorsal surface and extending backward along the side of the free thorax. Second, third, and fourth segments free, without processes, but each with a pair of dorsal plates; fifth and genital segments more or less completely fused, elongate, and cylin- dri
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