WILLIAMS: CRABS OF THE GENUS CALLINECTES 



p. 92, (part, the Rio de Janeiro specimens). 



Callinectes danae.- Rathbun, 1896, p. 357, pi. 16; 

 pi. 24, fig. 4; pi. 25, fig. 3; pi. 26, fig. 3; pi. 

 27, fig. 3.- 1898, p. 596.- 1901, p. 48.- 1930, 

 p. 118 (part), text-figs. 15d, 16d, 17b, 18d, 

 pi. 51.- 1933, p. 49.- Verrill, 1908a, p. 370, 

 fig. 22e (not 22d).- Chace, 1940, p. 33.- 

 Chace and Hobbs, 1969, p. 130, fig. 37b.- 

 Holthuis, 1959, p. 201.- Lemos de Castro, 

 1962, p. 39, pi. 2, fig. 9.- Williams, 1966, p. 

 86, fig. 2A-D, 4C, D.- Jones, 1968, p. 187.- 

 Taissoun, 1969, p. 75, fig. 28A-D, photo 

 10.- 1973, p. 33, figs. 4B, 5D, photo 4. 



Callinectes.- Kretz and Biicherl, 1940, p. 173, un- 

 numbered col. pi., figs. 1-22. 



Description. — Carapace (Figure 7) beting four 

 frontal teeth, submesial pair no more than half 

 length of lateral pair. Metagastric area of adults 

 with anterior width about 2-2.5 times length, 

 posterior width about 1.5 times length. Anterolat- 

 eral margins somewhat arched, teeth exclusive of 

 outer orbital and lateral spine varying from often 

 convex sided with subacute tips at orbital end of 

 row to sharper and more spiniform laterally, each 

 with anterior margin shorter than posterior and 

 separated from contiguous ones by narrow-based 

 rounded notches. Surface of carapace rather 

 evenly and smoothly granulate, except granules 

 more widely spaced on epibranchial region and 

 near anterolateral border, most crowded on gas- 

 tric, mesobranchial, and cardiac regions; nearly 

 smooth along frontoorbital, posterolateral, and 

 posterior borders. 



Chelipeds with granulate ridges, upper surface 

 of carpus bearing slightly developed interrupted 

 ridges trending longitudinally with axis of limb, 

 ridges bearing obsolescent granules often better 

 developed in males than in females, inferior lat- 

 eral ridge terminating in a strong lateral spine or 

 tooth often followed by a strong eminence. Male 

 abdomen and telson reaching beyond suture be- 

 tween thoracic sternites IV and V; telson triangu- 

 lar, longer than broad with somewhat inflated 

 sides; sixth segment of abdomen with sides nearly 

 straight, diverging proximally, poorly calcified 

 proximally except for variably indurated basal 

 portion often connected to distal part by a narrow 

 central column. Mature female abdomen and tel- 

 son reaching as far forward as in male, sixth seg- 

 ment shorter than fifth, telson triangular with 

 slightly inflated sides. First gonopods of male 



(Figures 18e, 20e, f) reaching beyond midpoint of 

 thoracic sternite VI, overlapping each other near 

 base, or adjacent, and tapering to narrow mem- 

 branous tips usually bent ventrolaterally; armed 

 with scattered but mainly dorsal minute spinules 

 and two to four subterminal sternomesial exceed- 

 ingly slender elongate spinules. Gonopores of 

 females (Figure 22e) broadly and irregularly 

 ovate with apex on long axis directed an- 

 teromesad, aperture of each broadly open mesi- 

 ally, narrowing laterally, and sloping from sur- 

 face on mesial side under curved and rounded 

 superior border and a rounded prominence on 

 posterolateral border. 



Size of carapace in mm. — Largest male: length 

 58, width at base of lateral spines 104, including 

 lateral spines 139. Largest female: length 48, 

 width at base of lateral spines 84, including lat- 

 eral spines 108. Summary of selected measure- 

 ments is given in Tables 1 and 2. 



Color. — Live males from Cubatao River near 

 Santos, Sao Paulo, Brazil: Carapace olive, becom- 

 ing indigo on edges of lateral spines and outer 

 anterolateral teeth in some individuals, more uni- 

 formly olive in others; teeth and spines on chelae 

 white tipped; a white patch in deepest part of de- 

 pression above third walking leg. Cheliped with 

 upper surface of palm, dactyl, part of carpus, and 

 spined edge of merus indigo to purple, and same 

 color in splashes on inside of flngers, distally on 

 merus and laterally on carpus. Flat outer dorsal 

 surface of palm and upper surface of merus reticu- 

 late blue and olive (but many crabs predominantly 

 olive on this part). Walking and swimming legs 

 predominantly china blue to azure blue, grading 

 to greenish and olive in darker parts. Lower edge 

 of chelae grading from purple to china blue or 

 azure individually. Chelipeds with inner face of 

 palm, outer face of palm and fingers, lower face of 

 merus, as well as meri of remaining legs and ven- 

 tral surface of cephalothorax, white. 



Described above is a colorful male which should 

 be called the "purple crab" if C sapidus is called 

 a "blue crab." Some individuals are duller and 

 some have a reticulate pinkish-blue cast on the 

 upper surface of chelipeds. 



Color notes by Kretz and Biicherl (1940) and 

 Taissoun (1969) emphasized the distal intense 

 purple coloration of legs and a grayish-blue 

 carapace on adult males. 



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