FISHERY BULLETIN: VOL. 87, NO. 1 



80°02'W, 68-75 m; dredge, 25 Jan. 19e2.-Triton. 

 1 0-, 1 9 (ovig.); off Palm Beach, 183-229 m; Thomp- 

 son & McGinity, no date.— Same. 1 damaged; off 

 Palm Beach, 55-73 m; 20 Apr. 1950. -Same. 3 juv.; 

 SW Sombrero Lt., 165-183 m; 6 June 1950.- 

 Schmitt stn. 207. 1 o-; Tortugas, 17.7 km (11 mi) S 

 Loggerhead Key, 68 m; dredge, 10 June 1925.— 

 Oregon stn. 4084. 1 9; Gulf of Mexico W Tampa, 

 27°45'N, 84°27'W, 91 m; dredge, 4 Dec. 1962.- 

 Pelican stn. 143-2. 1 o-; SW Panama City, 29°49.5' 

 N, 86°23'W, 70 m; try net, 5 Mar. 1939. -Silver Bay 

 stn. 2455. 1 9 (ovig.); S Great Bahama Bank, 

 23°34'N, 79°03'W, 165-188 m; dredge, 5 Nov. 

 1960.-3502. 1 0-, 1 9; S Great Inagua I., 20°54'N, 

 73°37'W, 137-183 m; dredge, 5 Nov. 1961.-Orec/ow 

 stn. 4297. 1 9; Surinam off Nieuw Amsterdam, 

 07°46'N, 54°17'W, 640 m; trawl, 22 Mar. 1963. 



Description.— Carapace convex, slightly more 

 arched in longitudinal than in transverse profile, 

 length 0.92 width; low tubercles of varied sizes scat- 

 tered more or less symmetrically, much bolder on 

 gastric, cardiac, and anterior branchial regions than 

 on posterior 1/3 and tract within perimeter, similar 

 raised ornamentation on extensor surfaces of 

 chelipeds; tubercles covered with low, smooth, tight- 

 ly packed granules, but surface between elevations 

 more coarsely and less thickly granular; raised me- 

 dian tract on gastric and cardiac region separated 

 from branchial regions by well-defined but shallow 

 depression to either side extending from postorbital 

 to intestinal regions; anterolateral margins regularly 

 convex, rather evenly and closely granular but 2 or 

 3 remote slightly larger granules along hepatic 

 margins and tendency to development of broad ob- 

 solescent teeth near juncture with posterolateral 

 margin; posterolateral margin extended into wing- 

 like prolongation bearing large spine preceded by 

 3 or 4 much smaller and increasingly diminished 

 spines, and succeeded by small spine, a rudimentary 

 tubercle, and flared arch over coxa of pereopod 5; 

 posterior margin obscurely trilobed, lateral lobes ex- 

 tended ventrally to flank base of abdomen, intestinal 

 region adjacent to median lobe coarsely granulate. 

 Front trilobed, broader than orbit; central lobe 

 broadly concave, dowTiturned, narrowly rounded tip 

 not visible in dorsal view, sharply granular near tip 

 and on raised margins continuous with mesial 

 margin of lateral lobes, latter directed almost 

 straight forward; slightly curved basal article of 

 antennular peduncles folded at less than 45° to each 

 other. Orbits raised above surrounding region; a 

 single obscure dorsal suture; mean maximal inter- 

 orbital distance 0.52 mean maximal span between 



principal spines on posterolateral winglike exten- 

 sions. 



Palm of chelipeds with ornamentation on exten- 

 sor surface not well divided into horizontal zones 

 typical of calappid species; lower margin with almost 

 uniformly crowded, well-formed granules merging 

 into a horizontal field of similar granules extending 

 over lower part of palm and bounded by almost 

 horizontal row of 5 or 6 low tubercles; surface above 

 this covered thickly with obsolescent granules and 

 a scattering of widely spaced low tubercles of varied 

 sizes tending to diagonal arrangement, crowded 

 more closely at base of "cockscomb"; a low, flat- 

 tened, smoothly arched ridge, obliquely situated and 

 sometimes dorsally cupped, at posterolateral corner 

 in line with flattened subdistal crest on merus, lat- 

 ter divided into anterior rectangulo-acute tooth, 

 followed by a biconcave tooth and 2 more lower 

 teeth, all slightly crenulate on margins; field above 

 this crest coarsely granulate; exposed surface of car- 

 pus tuberculate and granulate like palm. 



Abdomen of each sex broadest at segment 3; lat- 

 ter fused with narrower segments 4 and 5 in male, 

 segments in female relatively broader but essentially 

 linear and free; segment 2 somewhat trilobed and 

 bearing scattered obsolescent granules, segment 3 

 with much lower relief and low granules scattered 

 laterally; telson subtriangular. Pleopod 1 stout, 

 slightly curved and conically elongate, tapering to 

 narrow distal opening with nearby cluster of minute 

 horny spinules; pleopod 2 with slender stylet divided 

 into 2 parts, gently curved proximal part stronger 

 than distal part diverging obliquely mesad, tip only 

 slightly exceeding that of pleopod 1. 



Measurements in mm.— Carapace: holotype c 

 length 20.6, maximum anterior width 23.2, max- 

 imum span across winglike posterolateral projec- 

 tions 20.7; nontypes, same, smallest o* 16.0, 16.1, 

 14.9; smallest 9 12.0, 12.6, 10.9; allotype 9 21.1, 

 23.1, 21.7. 



Color.— 'No evidence of persistent minute spots of 

 color as on preserved specimens of Calappa angusta. 



Known raw^e.— North Carolina off Cape Lookout 

 through Bahamas, eastern Gulf of Mexico, Surinam; 

 31-188, rarely 640 m. 



Etymology.— The name is from the Latin "tubera- 

 tus", covered with knobs or bosses. 



Remarks.— Cyclozodion tuberatum has been con- 

 fused with Calappa tortugae because of the similar- 



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