THE GRAPSOID CRABS OF AMERICA, 



53 



Description. — Carapace about three-fourths as long as broad, con- 

 vex in both directions, antero-hiteral teeth upturned. Regions deeply 

 separated; a transverse granulate ridge on the hepatic and on the 

 epibranchial regions; some granular prominences on the postero- 

 lateral regions. Front prominent, two-sevenths as wide as the cara- 

 pace, convex, a narrow median notch. The second lateral tooth is 

 low and rounded and fused with the first tooth ; the three last teeth 

 are strong and prominent, the third the broadest, the fifth the most 

 acute. 



The chelipeds are very stout; the merus is as high as it is long and 

 has a stout subdistal spine above; the upper surface of the wrist is 

 as broad as it is long, with a blunt, stumpy inner tooth, and a 

 groove along the anterior margin; anterior 

 outer angle pronounced. Palms a little un- 

 equal, the lower portion of the outer surface 

 flattened, upper aspect broad, sloping, the 

 proximal angle of the upper margin forming 

 a prominent lobe ; the lower margin of the pro- 

 podus is lightly sinuous, the pollex very broad 

 at its base and tapering rapidly to the tip; 

 dactylus much bent down; both digits irregu- 

 larly toothed, leaving a narrow gape when 

 closed. 



Measurements. — Male holotype, length of 

 carapace 21.4, width of same 27.9 mm. 



Variations. — The type is much larger than 

 any other specimens examined; half-grown 

 specimens have a wider and less prominent 

 front, and a smoother carapace which is wider in its posterior part. 



Range. — From west coast of Florida to Eio de Janeiro, Brazil, 

 Shallow water to 7-i fathoms. 



Material examined. — 



Marco, Florida; H. Hemphill; 1 female ovig. (17801); 1 female 

 (18273). 



West Channel, entrance to Key "West; Feb. 13, 1902; Fish TJawk: 

 Beacon 2 to Sand Key Light, 48° 20' 00'' to Key West Light, 77° 07' 

 00"; 7i fathoms; Co. S.; temp. 20.2° C; station 7272; 2 males, 1 

 female ovig. (4.5952). Beacon 2 to Sand Key Light, 40° 11' 00" to 

 Key West Light, 119° 47' 00"; 7^ fathoms; Co. S. br. Sh.; temp. 

 20,2° C; station 7273; 4 males, Gfemales (3 ovig.) (45950). Key 

 West Light to N. W. Passage Light, G7° 35' 00" to Beacon 3, 103° 

 20' 00"; G5 fathoms; Co. S. brk. Sh.; temp. 19.8° C; station 7274; 1 

 male, 1 female ovig. (45949). 



Jamaica (P. W. Jarvis collection). 



Fig. 22, — Eccuatopsis 



CRASSl.MANCSj FEMALE, 

 (17801), OUTER MAX- 

 ILLU'ED, X 8. 



