THE GRAPSOID CRABS OF AMERICA. 409 



Florida; 1879; J. W. Milner; G males, 3 females (18422). 

 Curasao; Albatross; 7 males, 1 female (22310). 



UCA CRENULATA (Lockington). 



Plate 146. 



Gclasinnts crcnulatus LOCKINGTON, Proc. California Acacl. Sci., vol. 7, 1876 



(1877), p. 149 (type-locality, Toclos Santos Bay; type not extant). 

 Gelasiiinis vocator KINGSLEY, Proc. Acad. Nat. Sci. Philadelphia, 1880, p. 



147 (part). 

 Gelasimus gracilis RATHBUN, Proc. U. S. Nat. Mus., vol. 16, 1803, p. 244 



(type-locality, La Paz; male type, Cat. No. 4622, U.S.N.M.). 

 Gelasimus macrodactylus BOUVIEB, Bull. Mus. Hist. Nat. Paris, No I, p. 



8, 1895; not Milne Edwards and Lucas. 



Uca vocator ORTMANN, Zool. Jahrb., Syst., vol. 10, 1897, p. 352 (part). 

 Vca slcnodactyla ORTMANN, Zool. Jahrb., Syst., vol. 10, 1897, p. 35G. pf.rt: 



San Diego ; not G. stenodactylu* Milne Edwards and Lucas. 

 Uca crenulata HOLMES, Occas. Papers California Acad. Sci.. vol. 7, 1900, 



p. 75, pi. 1, figs. 7-9. 



Diagnosis. Oblique ridge inside palm continued to upper margin , 

 and bending at an obtuse angle. Lateral margins of carapace 

 angled. 



Description. The Pacific analogue of U. speciosa. The anterior 

 margin of the carapace is a little more horizontal; and the lateral 

 margins less convergent. The anterior, or straight portion of the 

 lateral margin may be longitudinal, or slope inward, or outward, and 

 is likely to be different on the two sides. The palm in the large cheli- 

 ped of the male appears narrower, as a part of it is bent over to 

 form the upper surface. Fingers more evidently granulous. The 

 oblique ridge on the inner face of the palm is more nearly perpendic- 

 ular to the lower margin and bends at an obtuse angle in continuing 

 toward the upper margin. 



Measurements. Length of carapace of male (17504) 10, width of 

 same 15 mm. 



Malformation. A curious malformation occurs in one claw among 

 a lot collected at San Felipe Bay by Nelson and Goldman, M/05. 

 The dactylus has an accessory branch, which is half as long as the 

 dactylus itself and arises near its base and is directed downward 

 at almost a right angle; it is subcylindrical and there are rudiments 

 of teeth on the distal edge. It rubs against the inner face of the 

 pollex and prevents the two fingers from closing together. The tip 

 of the branch is broken off. 



Range. From San Diego, California, to Gulf of California, as 

 far north as San Felipe Bay, Lower California; Guaymas and 

 Mazatlan, Mexico. 



Material examined. 



San Diego, California; 1872; H. Hemphill; 5 males (17504). 



