460 BULLETIN OP THE BUREAU OF FISHERIES. 



Length of a male, 15 mm. ; width, 14 mm. 



Several specimens of this crab, mostly of small size, were brought in by the Fish Hawk in 1913 

 and igi4 from the Blackfish Banks. It has never been taken close to the shore. 



Genus STENOCIONOPS Latreille. 



Stenodonops Latreille, 1829, p. 59. 



KEY TO THE SPECIES OF THE BEAUFORT REGION. 



a. Carapace with about eight strong median spines spinosissima. 



aa. Carapace with about four spiniform tubercles in the median line .furcala coelata. 



Stenocionops spinosissima (Saussure). PI. xxxix, fig. 2. 



Pericera spinosissima Saussure, 1858, p. 10, pi. i, fig. 2; A. Milne-Edwards, 18S0, p. 52. 

 Pericera attantica Rathbun, 1892, p. 247. • 



Pericera spinosissima Rathbun, 1898, p. 256. 



Carapace oval, about one and one-half times as long as broad, granulate and covered with a sparse 

 growth of short and fine curled hairs among which are a number of stout spines; about eight spines, 

 larger and smaller, form a longitudinal median row extending from the front of the cardiac area to the 

 posterior margin, there are two spines on each side on the mesogastric area and two, stronger than the 

 others mentioned, well down on the branchial region; both the anterior and posterior orbital angles 

 are spiniform, and behind the eye on the margin of the carapace is a spine; the rostral horns are stout, 

 straight, and widely divergent. Basal article of antenns armed in front with a fiat spine much shorter 

 than the orbital spines. 



A single immature specimen was obtained by the Fish Hawk at station 7313, depth 69 fathoms, 

 and another at a depth of about 50 fathoms 30 miles due south of Cape Lookout Lightship. 



Stenocionops furcata coelata (A. Milne-Edwards). PI. xxxix, fig. 3. 



Pericera ccelala A. Milne-Edwards, 1879, p. 200, pi. XVo, fig. 3. 

 Pericera cornuta coelata Rathbun, 1892, p. 244. 

 Stenocicnops furcata ccelata Rathbun, 1901. p. 73. 



Carapace pyriform, about one-half longer than wide, uneven, with strong spines and a dense cov- 

 ering of short setae among which are many longer hooked hairs. Rostrum consisting of two nearly 

 straight diverging horns with rows of hooked setae; orbital region broad; preorbital spine strong; subor- 

 bital and postorbital spines much smaller. Mid-dorsal line with four strong spiniform tubercles, of 

 which one is on the gastric region, while the other three are on the cardiac and intestinal regions; the 

 most posterior spine has its tip curved forward. Lateral border with foiu" stout spines, of which one is 

 on the hepatic and the others on the branchial region. In addition to the spines mentioned there are 

 two rather strong ones on the branchial region on each side and various smaller ones toward the front. 

 Ventral surface of body and legs, except the distal articles of the chelipeds so closely covered with 

 bulbose setae that the shell is hidden. 



Chelipeds slender; chelae weak, the fingers less than half as long as the palm; meral article with a 

 strong spine above near the distal end followed by several smaller spines. Walking legs more or less 

 rough and with clusters of hooked hairs. 



Length, including rostral horns, 60 mm.; width, including spines, 40mm.; rostral horns, 18 mm. 



Color, in life, dark red. 



The large male described above and one immature specimen were obtained in 1915, in about 15 

 fathoms, on the fishing banks off Beaufort. 



Genus SPHENOCARCINUS A. Mihi'e-Edwards. 



Sphenocarcinus A. Milne-Edwards, 1873-1880, p. 135. 



Sphenocarcinus corrosus A. Milne-Edwards. PI. xxxix, fig. i. 



Sphenocarcinus corrosus A. Milne-Edwards, 1873-1880, p. 13s; Rathbun, 1S94, p. 66. 



Carapace subtriangular, the lateral margin concave and the posterior one convex, depressed, deeply 

 grooved, and prolonged anteriorly into a rostrum composed of two long cylindrical horns which in old 



