DECAPOD CRUSTACEANS OF THE BEAUFORT, N. C, REGION. 463 



Chelipeds long, slender, tuberculate and with a border of serrate tubercles and laciniate spines on 

 both margins; meros with an additional median row of spiniform tubercles on the upper surface and the 

 hand with an obsolete median row beneath. Meral articles of walking legs subspinous on both margins. 



Measxu-ements of male: Length, 9.5 mm.; width, 10 mm.; hand, 11. 5 mm. 



Color, purplish red with cross bands of buff on chelipeds and walking legs. 



A series of four small specimens, one male and three females, was secured by the Fisk Hawk in about 

 100 fathoms, 30 miles south of Cape Lookout. They agree in essential characters with specimens of 

 P. pourtalcsii in the United States National Museum. No two specimens are exactly alike with respect 

 to spines, but in all the breadth is slightly in excess of the length. 



Genus PLATYLAMBRUS Stimpson. 



Platylainbrus Stwaxtson, 1871, p. 129. 



Platylambrus serratus (H. Milne-Edwards). PI. xxxix, fig. 7. 



Lambrus serratus H. Milne-Edwards, 1834-1840, t. I, p. 357. 



Platylambrus serratus A. Milne-Edwards, l873-i88o[i878], p. 156; Ratbbun, 1901, p. 80. 



Carapace subtriangular, about three fourths as long as wide, depressed, strewn with spines and 

 tubercles; anterolateral margins ctu-ved, cut into seven or eight teeth and terminating posteriorly in a 

 strong flat spine ; posterolateral border with three short erect spines ; on the back the spines are irregularly 

 arranged, there being about eight prominent and numerous smaller ones on each branchial region and a 

 median row of five, the anterior one of which is on the middle of the gastric region, while the posterior 

 one is on the posterior margin. A pair of ridges converge from the orbits to the anterior median spine. 

 Rostrum short, narrow and with raised margins which are continuous with the superior walls of the 

 orbits. 



Chelipeds, when extended, about twice as long as carapace, trigonal, smooth beneath, more or less 

 tuberculate on upper surface and with the margins cut into lanceolate or triangular teeth which are 

 fringed with fine hairs and much stronger on the outer than on the inner side of the articles; on the manus 

 there are about nine teeth alternately large and small; fingers stout, very oblique. Ambulatory legs of 

 moderate size, the longest not exceeding the meros of the cheliped. 



Color, a rosy red more or less mottled with gray; fingers carmine, shading to black. 



Dimensions of a male: Length, 17 mm.; width, 22 mm.; meros, 18 mm.; manus, 23 mm. 



Several specimens were dredged by the Fish Hawk south and east of the fishing banks, about 15 

 or 20 miles off Beaufort Inlet. It has not been collected near the shore. 



Genus SOLENOLAMBRUS Stimpson. 



Solenolambrus Stimp:x)n, 1871, p. 132. 



Solenolambrus tenellus Stimpson. PI. xxxix, fig. 8. 



SoUnolambrus tenellus Stimpson, 1871, p. 134. 



Pisolambrus nitidus A. Milne-Edwards, 1873-1880 [1878], p. 158, pi. xxx, fig. 4. 



Carapace a little broader than long and about equally produced in front of and behind the line 

 of the lateral angles, strongly convex, and with four protuberances — one gastric, one cardiac, and two 

 branchial; surface naked, glossy, and rather coarsely punctate; margins crenulate and dentate, the 

 five or six teeth of the expanded and broadly rounded lateral angle being the most prominent; postero- 

 lateral margin slightly concave; posterior margin convex, its angles obtuse. Hepatic region with two 

 or three denticulate teeth, those of the gastric and cardiac regions obtusely rounded ; ridge of tlie bran- 

 chial region well marked near the posterolateral margin, but almost obsolete anteriorly. Rostrum 

 rather prominent and faintly tridentate at the extremity, median tooth smallest and most prominent. 

 Eyes large, with a very minute tubercle at the summit. 



Chelipeds very long and slender, their general siuface smooth and polished ; their edges denticulate; 

 meros with about 13 teeth on either edge, the tliird tooth from the distal end being larger than the others; 

 hand with 12 sharp, forward-cm^ng teeth on the superior edge, the terminal tooth above the finger 

 being spiniform and considerably longer than the others;outer margin with about 11 small teeth; inner 

 margin with 19 or 20 very minute teeth. 



