FISHERY BULLETIN: VOL. 72, NO. 3 



12. Four frontal teeth with rather rounded tips, lateral pair more broadly triangular and 



with mesial side having more oblique slope than lateral side 13 



12'. Four frontal teeth acute, lateral pair usually broader than submesial pair (Atlantic; 



Mexican Gulf coast) rathbunae. 



13. Anterolateral teeth trending forward, their anterior margins shorter than posterior; 



vestiges of reddish color usually persisting in preserved specimens (except long- 

 preserved ones); (Atlantic; Caribbean-South America) bocourti. 



13'. Anterolateral teeth directed outward their tips acuminate and margins shouldered at 

 least in anterior portion of row; vestiges of greenish color usually persisting in 

 preserved specimens (except in long-preserved ones); (Atlantic; Venezuelan 

 estuaries) maracaiboensis. 



CALLINECTES MARGINATUS 

 (A. MILNE EDWARDS) 



Figures 3, 18a, 20a, 22b, 27 



Neptunus marginatus A. Milne Edwards, 1861, p. 

 318, pi. 30, fig. 2 (syntypes: 3 9 dry, MNHNP 

 895-lS, 895-2S, 896, Gabon). 



Callinectes larvatus Ordway, 1863, p. 573 [8] (syn- 

 types: 1 (5, MCZ 5147, Tortugas, Fla., USA; 3 

 ^, 1 9, MCZ No. 5151, Key West, Fla., USA; 3 

 5 MCZ 5152, Bahamas; lS,l juv 9 [not 5] 

 MCZ 5155, Jeremie, Haiti).- Smith, 1869, p 

 9.- A. Milne Edwards, 1879, p. 225 (var. of C 

 diacanthus). -Ra.thhwn, 1896, p. 358, pi. 18 

 pi. 24, fig. 5; pi. 25, fig. 4; pi. 26, fig. 4; pi. 27 

 fig. 4.- Rankin, 1898, p. 232.- Young, 1900, p 

 188 (var. of C. diacanthus) .- Doflein, 1904 

 p. 99. 



Neptunus diacanthus.- Brocchi, 1875, pi. 16, fig. 

 76 [?].- de Man, 1883, p. 150.- Pfeffer, 1890, 

 p. 5, pi. 1, figs. 5, 6. 



Callinectes africanus A. Milne Edwards, 1879, p. 

 229 (var. of C. diacanthus) (syntypes: 

 MNHNP, Cape Verde Islands, not found in 

 1968).- A. Milne Edwards and Bouvier, 

 1900, p. 71 (var. of C. diacanthus) (not pi. 

 4, fig. 5 = C sapidus). 



Callinectes larvatus var. africanus? Benedict, 



1893, p. 537. 



Neptunus (Callinectes) diacanthus.- Ortmann, 



1894, p. 77 (part; specimen b, Cuba). 

 Callinectes marginatus.- Rathbun, 1897, p. 149.- 



1900a, p. 291.- 1900b, p. 142.- 1901, p. 48.- 

 1921, p. 395, text-fig. 2, pi. 19, fig. 1; pi. 20, 

 fig. 1.- 1930, p. 123, figs. 15e, 16d, 17d, 18c, 

 pi. 53.- 1933, p. 49.- 1936, p. 383.- de Man, 

 1900, p. 41, pi. 1, fig. 5 (juv 9, not (J).- Nobili, 

 1906, p. 305.- Gruvel, 1912, p. 3, 6, pi. 2, fig. 

 1.- Balss, 1921, p. 58.- Odhner, 1923, p. 21.- 



Boone, 1927, p. 32.- Contreras, 1930, p. 235, 

 fig. 6.- Vilela, 1949, p. 59.- Capart, 1951, p. 

 134, fig. 48.- Chace, 1956, p. 154.- Chace and 

 Hobbs, 1969, p. 131, fig. 37d.- Monod, 1956, 

 p. 208, figs. 238, 239.- Rossignol, 1957, p. 82.- 

 Guinot and Ribeiro, 1962, p. 48.- Forest and 

 Guinot, 1966, p. 65.- Taissoun, 1973, p. 39, 

 figs. 4A, 5B, photo 7. 



Callinectes diacanthus.- Young, 1900, p. 186 

 (part). 



Callinectes marginatus var. larvatus.- Verrill, 

 1908a, p. 368, text-fig. 22b, pi. 18, fig. 1. 



Description. — Carapace (Figure 3) bearing four 

 frontal teeth, submesial pair no more than half 

 length of lateral pair. Central trapezoidal 

 (metagastric) area short, anterior width about 2.4 

 times length, posterior width about 1.5 times 

 length. Anterolateral margins arched slightly; 

 anterolateral teeth exclusive of outer orbital and 

 lateral spine without shoulders, usually trending 

 forward and anterior margins of all except first 

 two concave, last two teeth spiniform. Lateral 

 spine moderately long and slender. Surface 

 coarsely granulate anterior to prominent epibran- 

 chial line and over mesobranchial regions, more 

 finely and closely granulate on proto- and 

 mesogastric areas, prominent branchial lobes, 

 and especially on cardiac lobes; posterior and 

 posterolateral margins smooth. 



Chelipeds with smoothly granulate prominent 

 ridges on propodi and reduced ones on carpi; 

 fingers compressed but broadened dorsoventrally 

 producing a pointed spatulate shape; major chela 

 with usual enlarged proximal tooth on dactyl op- 

 posing propodal molariform complex, propodus 

 often with decurved lower margin. 



Male abdomen and telson narrow, reaching 

 slightly beyond suture between sternites IV and 

 V; telson about 1.8 times longer than wide; sixth 



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