DECAPOD CRUSTACEANS OF THE BEAUFORT, N. C, REGION. 455 



Genus PYROMAIA Stimpson. 



Pyromaia Stimpson, 1871. p. 109. 



Pyromaia cuspidata Stimpson. PI. xxxviii, fig. 4. 



Pyromaia cuspidata Stimpson, 1871. p. no; A. Milne-Edwards, 1879. p. 197. p'- xxxvl, fig. 2; Rathbun, 1894, p. 73. 

 Apiomaia cuspidata Von Martens, 1S71, p. 182; Miers, 1879, p. 651. 



Carapace triangular, about two-thirds as wide as long, somewhat tumid, granulate, and spiny. Ros- 

 trum tapering to a point, spinulose along the margins. Orbits large, open, with a supraorbital, post- 

 orbital, and two preorbital spines, the latter belonging to the basal article of the antenna and the pos- 

 terior one of them directed downward. Mid-dorsal line with five erect spines — two on the gastric area, 

 two on the cardiac area, and one on the first segment of the abdomen — the first three of these spines 

 stand vertically but the last two are directed backward. Mesogastric and branchial areas each with 

 one or two large and several small spines. 



Antennulary septum prolonged downward into a sharp, triangular tooth. Chelipeds exceeding 

 the rostrum by about the length of the fingers, weak, sparsely hairy, and with an irregular border of 

 small spines. Walking legs long and slender, the meral articles spiny at the distal end, the dactyli 

 long, slender, and ciu-ved. 



Length of a male, 16 mm. ; width, 9 mm. 



Color, brown, the legs with lighter cross bands. 



This species has been collected on the fishing banks in about 15 fathoms on two occasions. A small 

 male was seciu-ed in 1914 and 5 specimens, 3 males and 2 females, in 1915. They are all immature but 

 do not differ materially from larger specimens from the Florida coast. 



Genus STENORYNCHUS Lamarck. 



Leptopodia Leach, 1815, p- 15 (not Leptopodia Leach, 1814, p. 431). 



Siencryncku* Lamarck, 1818 (pt.), p. 236 (not Stenorhynchus Latreille, 1825. nor Stenorynchus H. Milne-Edwards, 1834). 



Stenorynchus Sagittarius (Fabricius). Arrow crab. PI. xxxvii, fig. 8. 



Cancer Sagittarius Fabricius, 1793, 1. 11, p. 44a 

 Leptopodia sagittaria Leach, 1815, p. 16. 

 Stenorynchus seticornis Lamarck, i8iS, p. 237. 

 Stenorynchus Sagittarius Rathbun, 1901, p. 53; Verrill, 1908, p. 397. 

 Carapace triangular, broadest behind, diminishing in width to the eyes and thence produced into 

 the slender, flattened, laterally spinuliferous rostrum, which varies from slightly longer than the cara- 

 pace to twice as long; there is a small postorbital spine. 



Legs very slender and composed of cylindrical articles which bear spines at their distal ends and 

 scattered spines near the middle of their length; the first pair of ambulatory legs is from eight to eight 

 and a half times as long as the carapace ; the second, third, and fourth legs successively shorter. 



Chelipeds slender, cylindrical; hand weak, dactylus contained from two and a half to foiu times in 

 the length of the propodus. 



Measiu-ements of a male: Length of carapace and rostrum, 45.3 mm.; length of rostrum, 23.2 mm.; 

 width of carapace, 19 mm. 



Color, creamy white or buff, with bands of brown or black diverging from the median line to the 

 posterior margin; fingers blue; spines of rostrum, legs, and teeth of chelae orange or red. 



An occasional specimen of this curious crab has been taken by the Fish Hawk during the dredging 

 operations off Beaufort Inlet and Cape Lookout. A number of fine examples were secured in 1914 on 

 the Blackfish Banks and to the southward. 



Genus PELU BeU. 



Pelia Bell, 1835. p. 170. 



Pelia mutica (Gibbes). PI. xxxvm, fig. 7. 



Pisa mutica Gibbes, 1850, p. 171. 



Pe/ia mKfico Stimpson. i860, p. 177; Kingsley, 1S78-79, p. 316; A.Milne-Edwards, 1880. p. 73: Rathbun. i-oi, p. 6j; Sum- 

 ner, 1911, p. 670. 



Carapace pyriform, regions elevated, covered everywhere with a thin coating of soft hair; rostrum 

 about two-fifths as long as rest of carapace and composed of two horns tmited at the base but divergent 

 distally. 



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