114 BULLETIN 152, UNITED STATES NATIONAL MUSEUM 

 CALUNECTES ORNATUS Ordway 



SHELLIGS (ANTIGUA) 



Plate 50 



Callinectes ornatus Ordway, Journ. Boston Soc. Nat. Hist., vol. 7, 1863, p. 571 

 [6] (type-localities, Cumana, Hayti, Bahamas, Tortugas and Charleston 

 Harbor; cotypes in M.C.Z. from Cumana, Hayti (5137) and Charleston). — 

 A. Milne Edwards, Crust. Reg. Mex. 1879, p. 225 (var. of C. diacanthus). — 

 Rathbun, Proc. U. S. Nat. Mus., vol. 18, 1895 (1896), p. 356, pi. 15; pi. 24, 

 fig. 3; pi. 25, fig. 2; pi. 26, fig. 2; pi. 27, fig. 2. 



Diagnosis. — Submedian teeth of front much broader than long, 

 rudimentary. Intramedial area very short, three times or nearly 

 three times as broad as long. Antero-lateral teeth broad and shallow. 



Description. — Carapace rather convex; depressions shallow; length 

 of intramedial area much less than half, sometimes a third of its an- 

 terior width. Surface finely and rather evenly granulated. Frontal 

 teeth four, the two outer subtriangular, blunt, margins slightly 

 concave; inner teeth very small, tuberculiform, almost rudimentary, 

 broader than long, margin arcuate. Subfrontal tooth a prominent 

 spine; inner suborbital tooth a more prominent, broad, subtriangular 

 lobe. Lateral teeth broad and shallow; margins convex at base, 

 concave in terminal half; posterior margins longer than anterior; tips 

 acute in first five or six teeth, acuminate in remainder. Lateral 

 spine 2.5 to 3 times the length of preceding tooth, directed obliquely 

 forward. Abdomen of male with penultimate segment widest at 

 proximal end, its margins slightly concave; the appendages reach or 

 nearly reach the middle of the penultimate segment; proximally they 

 curve inward and touch or overlap each other; distal portions straight 

 and divergent, widening a little behind the slender tip. Abdomen of 

 female very broad at proximal end (to third segment), tapering more 

 rapidly to the terminal segment, and appearing more triangular, than 

 in any other species. 



Color. — General color of half grown male (61002) a sort of sage green 

 and hair brown with porcelain white patches, wax yellow teeth, whitish 

 behind white tips, top and front dragons blood red. Chelipeds largely 

 the same as the general color of the carapace, hair brown with greenish 

 tinge, spines nearly all porcelain white, their hind margin and margin 

 of carpus between them shiny clove brown; inner face of hand and 

 carpal articulation china blue, fingers all white. A sort of cinnamon 

 with white between ambulatories; dactyls of the latter coral red to 

 scarlet; propodus, carpus, and merus china blue, stippled on merus 

 stronger from distal end to middle of merus. Swimming legs like 

 chelipeds, margins of articles salmon near the articulations; proximal 

 half of paddle and adjacent propodus white, distal half of paddle a sort 

 of raw sienna and gall stone yellow; the paddle transparent. Under 

 parts whitish. (Schmitt.) 



