. Bulletin - United States National Museum. Science. THE SPIDER CBABS OF AMERICA 229 Genus TRACHYMAIA A. Milne Edwards Trachymaia A. Milne Edwards, Crust. R6g. Mex., 1880, p. 351; Bull. Mus. Comp. Zool., vol. 8, Dec. 29, 1880, p. 3; type, T. cornuta A. Milne Edwards ⢠Carapace broad, much swollen posteriorly, spinous. Rostrum short, deeply bifurcate. A small preocular spine, a large postocular spine, an infero-orbital spine. Eyes large, flattened almost hori- zontally. Basal antennal article long and narrow; next article inserted on either side of rostrum. Merus of outer maxillipeds with ante
. Bulletin - United States National Museum. Science. THE SPIDER CBABS OF AMERICA 229 Genus TRACHYMAIA A. Milne Edwards Trachymaia A. Milne Edwards, Crust. R6g. Mex., 1880, p. 351; Bull. Mus. Comp. Zool., vol. 8, Dec. 29, 1880, p. 3; type, T. cornuta A. Milne Edwards ⢠Carapace broad, much swollen posteriorly, spinous. Rostrum short, deeply bifurcate. A small preocular spine, a large postocular spine, an infero-orbital spine. Eyes large, flattened almost hori- zontally. Basal antennal article long and narrow; next article inserted on either side of rostrum. Merus of outer maxillipeds with antero-external angle much dilated, antero-internal angle oblique, not notched. Chelipeds elongate, chelae much enlarged. Legs very slender, first one longer than cheliped, remainder diminishing rapidly in length; dactyli long, stj^liform, unarmed. Contains but one species. TRACHYMAIA CORNUTA A. Milne Edwards Plate 80; plate 232, figs. 3-5 Trachymaia cornuta A. Milne Edwards, Crust. R^g. Mex., 1880, p. 352 (type-locality, off Barbados, 82 and 140 fathoms; cotypes, Cat. No. 2763, M. C. Z.); Bull. Mus. Comp. Zool., vol. 8, Dec. 29, 1880, p. 3.âRathbun, Proc. U. S. Nat. Mus., vol. 17, 1894, p. 63. Tachymaia cornuta A. Milne Edwards, Crust. R6g. Mex., 1880, pi. 31 A, figs. 2-2c. Diagnosis.âCarapace broad, spines delicate; eyes large and flat; chelipeds long and massive; ambulatory legs filiform. Merus of outer maxillipeds not notched at antero- internal angle. Description.âCarapace rough with spin- ules and covered with soft bristles; spines arranged as follows: Four on gastric region forming a transverse diamond; 2 median cardiac, close together; 5 brancliial, three near inner margin, 2 near outer; 1 hepatic and 1 subhepatic spine; on posterior margin a line of 25 small spines terminating above first leg; of this row the median spine and 2 near the middle are larger than the others; on the margin of the branchial region there is a line of 4 spines extending forward from fig.
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