394 BULLETIN OF THE BUREAU OP FISHERIES. 



tally, armed above with 7 or 8 equidistant teeth and below with 2 to 4; second tooth of dorsal margin 

 usually directly above the bases of the ocular peduncles; the tip unarmed, slender, and acute. Outer 

 flagellum of antennule much longer than the inner, the basal portion thick and bearing, at about the 

 sixteenth article, an accessory branch of about seven articles. Antennal flagellum longer than body; 

 scale broad, its rounded tip slightly exceeding the rostrum, its sides nearly parallel. First pair of legs 

 hardly reaching the hand of the second pair of legs and about equaling the anteimal scale. Second pair 

 of legs more slender, exceeding the rostrum by more than the length of the hand; fingers a little shorter 

 than the palm. Fifth pair of legs exceeding the tip of the rostrum. 



Abdomen rather slender, humped at end of fourth segment. Telson tapering gradually to the 

 extremity where the sides turn in suddenly to end in an acuminate median tooth, on each side of which 

 is a long stout spine and at each lateral angle a much shorter one, while between the inner spines there 

 is a pair of long plumose hairs. The dorsal surface of the telson bears two pairs of spines, one near the 

 distal end and the other one-fomth the distance from the distal end to the base. 



Length, 42 mm.; carapace, 18 mm. 



Color in life, nearly transparent; in alcohol, milky white. 



While P. exilipes, being an inhabitant of fresh water, has not been taken in the immediate vicinity 

 of Beaufort, it may be safely predicted that it will be found there sooner or later. It has been collected 

 at Edenton, Wilmington, Hales Point, and Lake Mattamuskeet. It may be readily distinguished 

 from the others of its genus by its much more slender form and slender hands as well as by its habitat. 



Genus UROCARIS Stimpson. 



Urocaris Stimpson, i860, p. 39 [loSj. 



Urocaris longicaudata Stimpson. PI. xxvn, fig. 7 . 



Urocaris longicaudata Stimpson, i860, p. 108; Kingsley, i8Soa. p. 444: Rathbun, igoi, p. 126. 



Integument very thin, transparent, and smooth. Carapace rounded above, its anterior margin 

 with a strong, rounded tooth at the side of the orbit. Rostrum hardly reaching end of second article 

 of antennular peduncle, its upper edge raised into a high, arcuate, 7 to 8 toothed crest, its lower margin 

 with a small spine near tip. Antetinal scale exceeding peduncle by about half its length, its margins 

 nearly parallel; apical spine small; flagellum very slender, longer than body. Inner flagellum of 

 antennule with the basal segments thickened and bearing at about the eighth segment a long slender 

 branch almost as long as antenna; inner flagellum simple, more slender and shorter. First pair of 

 legs slender, carpus and hand of nearly equal length. Second pair of legs longer; the carpus, palm, 

 and fingers subequal. 



Abdomen strongly bent between third and fourth segments, the posterior part of the third segment 

 extended back like a hood above the fourth. Sixth segment slender and about as long as fotuth and 

 fifth combined. Telson narrow, tapering, upper surface with 4 small spines, tip obtuse and bearing 

 several slender spines. 



Length of a male, 17 mm.; carapace, including rostrum, 4.2 mm.; rostrum, 1.5 mm. 



Found in abundance on submerged eel grass along with Hippolyte and Tozeuma, where it escapes 

 observation by reason of its almost perfect transparency. 



Genus CORALLIOCARIS Stimpson. 



CoralUocaris Sti m pson, i860, p. 38 [107]. 



Coralliocaris wilsoni Hay. PI. xxvii, fig. 8. 



CoraUiocaris wilsoniHsiy, 1917, p. 71. 



Body somewhat compressed, cephalothorax about as long as abdomen excluding telson. Carapace 

 firm, smooth, polished, and with a well-defined postantennal spine; rostrum about one-third as long as 

 remainder of carapace, compressed, slightly decurved and armed above with 11 to 13 acute, equidistant 

 teeth. Eyestalks stout. Antennular flagella of about equal length, the outer much thicker than the 

 inner. Antennal scale broad, equal to the rostrum in length. First pair of legs alike, slender, chelate, 

 the tips of the fingers hairy. Second pair of legs very unequal, the larger one having the chela so large 

 that its bulk is almost equal to the rest of the animal; hand cylindrical, movable finger strongly curved, 

 bent inward, its cutting edge with a prominent lobe near the base; thtimb bent downward out of line 



