1895. 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



361 



Very convex; nreolation.^ piomineiit; coarsely granulate except along 

 tlie lateral margin, where the carapace is smooth. Intrameclial region 

 very long, its length about equal to its posterior width. Front (Plate 

 XXIV, fig. 7) with four large rounded teeth, the me<lian the smaller, 

 and a little less advanced than the lateral, except in a few cases where 

 they project as far as the lateral. Suborbital tooth short, triangular, 

 narrow, obtuse. Anterolateral teeth very broad, acute, the last two or 

 three spiuiform. Lateral spine short, usually less than twice the length 

 of the preceding tooth. Penultimate segment of the abdomen in the 

 male (Plate XXV, tig. 0) constricted in its proximal })ortion, widen- 

 ing at both extremities. Terminal segment long. Appendages (Plate 

 XXVI, fig. 0) reaching to the end of the abdomen, with a double curve 

 as in C. sapidus', tips crossing. The sternum has a deep longitudinal 

 groove in front of the abdomen. The abdomen of the female (Plate 

 XXVIT, fig. T)) is very long, especially the penultimate segment; the 

 terminal segment is much longer than wide. Costa> of chelipeds with 

 depressed granules, often appearing almost smooth to the eye. The 

 car])al and the anterior meral spine are usually noruial, though some- 

 times in old specimens reduced to blunt projections. There is a broad 

 blunt tooth on the anterior margin of the carpus just below the inner 

 angle. 



^Size. — The largest male is 5i inches wide; the largest female, 4§ 



inches. 



Measurements of CaUinectes hocourti. 



a Tip broken. 



Color. — Alcoholic specimens indicate that the color is rich and vari- 

 egated. In a large male from Sabanilla, the carapace is greenish, darker 

 in the anterior half, and especially on the gastric region. The posterior 

 half is yellowish- green, the yellow being most apparent on the inner 

 half of the branchial region. There are four oblong red spots follow- 

 ing the outline of the frontal and antero-lateral margin, but at a 

 little distance from the teeth. There are blotches of red on the cardiac 

 and branchial regions. The transverse lines of granules crossing the 

 carapace are also red. The chelipeds are a purplish brown. In a large 

 male from Greytown the central and antero-lateral portions are brown, 

 the yellow branchial spots are brighter than in the preceding, and there 

 is a tinge of blue along the posterior margin. Smaller specimens are 

 duller m color, but all show traces of red and yellow spots. 



The specimens examined are from the following localities: 



Greytown, Nicaragua; C. W. Richraoiid, March 27, 1892 (No. 18234, U. S.N.M.). 

 Turbo, Isthmus of Panama (Atlantic side); Dr. Maack (Mus. Comp. Zool.). 



