WILLIAMS and CHILD: COMPARISONS OF SOME BOX CRABS 



Diagnosis. —Carapace convex longitudinally and 

 from side to side except where posterolateral wing- 

 like extensions occur; surface uneven, elevations 

 roughly falling into 5 longitudinal rows, pair of fur- 

 rows bordering median elevation deepest by far; 

 minutely granular and coarsely punctate except on 

 extreme posterior part where punctations disappear 

 and granules become larger; small posterolateral 

 winglike projections bearing 4 large and 1 or 2 

 rudimentary spines, 1 rudimentary spine often pres- 

 ent between 2 anterior larger ones, spine next to 

 posteriormost always largest and very much so in 

 juveniles, somewhat curved anteriorly, with tenden- 

 cy for anterior curvature in others as well; posterior 

 margin trilobate in dorsal view, lateral lobes pro- 

 longed ventrally on either side of abdomen. 



Front deflexed, tip invisible in dorsal view, very 

 slightly wider than greatest diameter of orbit and 

 trilobate, median lobe rounded triangular and lateral 

 lobes very narrow and traversed by notch separating 

 front from orbits; orbital margin very slightly raised 

 above surrounding region; mean maximal inter- 

 orbital distance 0.50 mean maximal span between 

 major posterolateral spines (see Figure 2G). 



Palm of chelipeds with extensor surface orna- 

 mented in horizontal zones, well defined in lower 1/4 

 but obscure in upper 3/4; lower margin beaded with 

 sharp granules, progressively raised, spiniform and 

 remote proximally, flanked by narrow band of 

 moderately crowded granules; lower half bearing 

 low scattered protuberances, partly interspersed in 

 granular zone and tending to horizontal arrange- 

 ment, but becoming more widely and somewhat 

 diagonally scattered in upper 1/2; proximolateral 

 corner bearing short oblique obsolescent ridge sur- 

 mounted by 3 or more acute to crenulate spines, 

 most prominent distally; in line with subdistal crest 

 of larger, uneven, ragged spines on merus. Pereo- 

 pods 2-5 with row of almost uniform spines on flexor 

 surface of merus, extensor surface of carpus entire. 



Abdomen of each sex broadest at segment 3, lat- 

 ter fused with narrower segments 4 and 5 in male 

 though nonfunctional articulations sometimes ap- 

 parent, segments in female relatively broader but 

 essentially linear and free; segment 2 trilobed and 

 rather sharply granular, segment 3 with lower relief 

 and bearing obsolescent granules clustered lateral- 

 ly; telson subtriangular. Male pleopod 1 rather stout, 

 slightly curved and conically elongate, tapering to 

 distal opening; pleopod 2 with slender stylet divided 

 into 2 parts, gently curved proximal part stronger 

 than distal part curved mesially upon itself as a 

 crook, distal half of crook extending beyond tip of 

 pleopod 1 and recurved near tip. 



Known range.— Grand Bahama Bank to Panama 

 and Surinam, 137-365 m. 



Measurements in mm.— Carapace: smallest o- 

 length 19.8, maximum anterior width 20.7, max- 

 imum span across posterolateral winglike projec- 

 tions 17.2; same, largest cr, 57.1, 62.2, 50.5; small- 

 est 9, 20.6, 22.2, 18.3; largest 9, 53.2, 58.5, 48.7. 



Remarks.— See next species. 



Paracyclois milneedwardsii Miers 1886 



Figures 2, 6 



Paracyclois milneedwardsii Miers 1886:289, pi. 24, 

 fig. l.-Sakai 1976:134 (Engl, text), 85 (Jpn. text), 

 pi. 41, fig. 2. 



Calappilia milne-edwardsi.—G\aessner 1969:R494. 



Material studied. -VS'NM 233655. 2 o-, 2 9; 

 Japan, Shikoku I., Tosa Bay; K. Sakai.-233654. 1 

 9; Philippines, Balayan Bay, southern Luzon, 13° 

 47'20"N, 120°43'30"E, 329 m; Albatross stn. 536, 

 trawl, 20 Feb. 1909. -Same. 1 9; S Balayan Town, 

 141-195 m; trawl, 21 June 1966.-Same. Ice; S 

 Sapating, 270-305 m; trawl, 29 July 1966.-Alba- 

 tross stn. 5453. 2 9; E coast Luzon, San Bernardino 

 Str., NE Legaspi Light, 13°12'N, 123°49'18"E, 267 

 m; trawl, 7 June 1909.-5242. 2 o- (juv.). Mindanao 

 near Vanivan Is., 06°51'53"N, 126°14'10"E, 349 m; 

 trawl, 14 May 1908. 



Diagnosis. —Carapace irregularly orbiculate, 

 broadest at a point anterior to midlength of antero- 

 lateral margins, latter sweeping in regular curve to 

 winglike protuberance of posterolateral margins 

 bearing 4 unequal spines, anterior one longest; 

 posterior margin bearing 3 strong flattened lobular 

 spines ornamented with coarse tubercles extending 

 onto adjacent intestinal region; margins behind 

 anterior 1/4 of length tending to be rimmed by nar- 

 rowly upturned, granular lip; median tract separ- 

 ated from branchial regions by rather prominent 

 groove at either side extending from gastric to in- 

 testinal regions; surface granular and ornamented 

 with low, smooth rounded tubercles tending to ar- 

 rangement in concentric arcs diminishing in size 

 toward lateral, posterolateral, and intestinal areas. 



Front slightly narrower than orbit, trilobed, 

 broadly rounded central lobe with downturned tip 

 not visible in dorsal view, 3 low peripheral lobes on 

 its upper surface; lateral lobes much narrower and 

 slightly divergent to accommodate folded anten- 



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