408 BULLETIN 97, UNITED STATES NATIONAL MUSEUM. 



Plataforma, Bahia, Brazil; 1S76-1877; K. Rathbun; 5 males, 5 

 females (40G19). 

 Sao Matheos, Brazil; Thayer Exped.; 4 males, 9 females (M.C.Z.). 



UCA SPECIOSA (Ives). 



Plate 145. 



Gelasimus speciosits IVES, Proc. Acad. Nat. Sci. Philadelphia, 1891, p. 179, 

 pi. 5, figs. 5 and 6 (type-locality, Port of Silam, Yucatau; type in Mus. 

 Phila. Acad. Sci.). 



Uca stcnodactyla ORTMANN, Zool. Jahrb., Syst., vol. 10, 1897, p. 356 (part). 



Diagnosis. Oblique ridge inside palm continued to upper margin, 

 bending at a right angle. Lateral margins of carapace angled. 



Description. A rather small species. H-form depression deep; 

 sulcus behind the orbits shallower; surface smooth. Carapace widest 

 at antero-lateral angles. Anterior part of lateral margins straight 

 and convergent; the margin then turns at an obtuse angle and is 

 continued in a sinuous line to a point opposite the middle of the 

 cardiac region. The front is nearly one-third the width of the cara- 

 pace ; its lower margin, as also the surface of the eyebrow, is visible 

 in a dorsal view. Upper margin of orbit oblique, sinuous, antero- 

 lateral angle acute, directed slightly forward. 



Large cheliped of male with arm rugose, wrist and hand granulous 

 outside, fingers smooth. On the inner surface of the palm the oblique, 

 tuberculated ridge leading up from the lower margin turns at the 

 middle at a right angle and is continued to near the upper margin. 

 The tuberculated ridge parallel to the distal end of the palm is very 

 oblique to the lower margin and nearly reaches the upper margin. 

 Space between ridges smooth. Fingers one and two-thirds times as 

 long as palm; fingers slender, gaping; of the prehensile tubercles, 

 there is a larger one at middle of pollex and at basal fourth of 

 dactylus. 



Measurements. Male (18435), length of carapace 10, width of 

 same 14.4 mm. 



Range. South and west Florida; West Indies. 



Material examined. 



Cocoanut Grove, Florida ; Jan. 1916 ; W. L. McAtee ; 3 males, 1 fe- 

 male (48980). 



Cards Sound, Florida; Feb. 15, 1889; Grampus; 4 males, 2 females 

 (1525G). 



Key Vaccas, Florida; H. Hemphill; 1 male (18435). 



Key West, Florida; high-tide among stones or burrowing in sand; 

 H. Hemphill; 8 males, 3 females (22309). 



Sarasota Bay, Florida; Union College collection; 1 male, 2 females 

 (42617). 



