118 BULLETIN 152, UNITED STATES NATIONAL MUSEUM 

 CALLINECTES DANAE Smith 



Plate 51 



? Ciri Apoa Marcgrave, in Piso and Marcgrave, Hist. Nat. Brasil., 1648, p. 

 183, text-fig. 17 



Lupa dicantha Dana, U. S. Expl. Exped., vol. 13, Crust., pt. 1, 1852, p. 272; atlas, 

 1855, pi. 16, fig. 7a-c. Not Lupea dicantha Milne Edwards, 1834. 



Callinectes diacanthus Ordway, Journ. Boston Soc. Nat. Hist., vol. 7, 1863, p. 575. 



Callinectes danae Smith, Trans. Connecticut Acad. Sci., vol. 2, 1869, p. 7 (type- 

 locality, Pernambuco; cotypes in M. C. Z. (5143) and P. M. Y. U.). — Rath- 

 bun, Proc. U. S. Nat. Mus., vol. 18, 1895, p. 357, pi. 16; pi. 24, fig. 4; pi. 25, 

 fig. 3; pi. 26, fig. 3; pi. 27, fig. 3. 



Callinectes diacanthus A. Milne Edwards, Crust. Reg. Mex., 1879, p. 226 (var. 

 of C. diacanthus) . 



Diagnosis. — Frontal teeth small, unequal, acute. Tips of append- 

 ages of first segment of male abdomen straight and reaching terminal 

 fourth of penultimate segment. 



Description. — Intramedial region wider behind than in sapidus, its 

 length less than half the anterior width. Front with two distinct 

 submedian teeth, small, subacute; lateral teeth narrow, acute. Of 

 the antero-lateral teeth of the carapace, the second to sixth, inclusive, 

 do not trend forward, posterior margin of each tooth not much longer 

 nor more convex than anterior margin; all teeth acute, the seventh 

 and eighth especially so ; eighth tooth directed forward. Lateral spine 

 3}^ to 4 times length of preceding tooth in the old male. Inner 

 suborbital tooth prominent and rather narrow. Penultimate segment 

 of abdomen of male very broad at proximal end. The appendages 

 reach to middle or terminal third of penultimate segment and taper 

 regularly to the tips; they sometimes touch each other proximally, 

 but more often are separated. Abdomen of female similar to that of 

 C. ornatus but wider in its fifth and sixth segments. Costae of 

 chelipeds very closely set with fine granules interspersed with larger 

 ones. Two sharp tubercles or spinules on wrist between outer ?pine 

 and the s^ine at proximal end of palm. 



Color. — Specimens from Rio olive green, eight posterior legs in 

 part bluish, arm and hand blue with some reddish purple. (Dana.) 



Measurements. — Males attain a size of bY^ inches, females 4 inches. 

 Male (2371), total length of carapace 57.5, length to median sinus of 

 front 55.5, greatest width 131.5, width at anterior base of lateral spine 

 101.2, fronto-orbital width 45.8, width of front 13.5 mm. 



Range. — From Indian River Inlet, Florida, to State of Santa 

 Catharina, Brazil. 



Material examined. — 



FLORIDA.— Indian River Inlet; January 23, 189G; U. S. Fish 

 Comm.; 3 young (20115). Florida, 1859; G. Wurdemann; 2 males, 

 not typical (M.C.Z.). 



>" As CbUiriectes danae is perhaps the commonest swimmini? crab in Brazil, it is likely that Marcgrave's 

 species is identical with it, in spite of Iiis grotesque figure. 



