378 BULLETIN 97, UNITED STATES NATIONAL MUSEUM. 



F*. No oblique stridulating ridge on inner surface of palm. Upper 

 margin of <>rl>it m<i I>W.!:>M*. __________ stcnodacti/lns. p. 41(5. 



E*. Carapace strongly narrowed behind ___________ Jcpfofliicti/ln, p. 420. 



D*. No abdominal segments fused. Fingers of large cheliped three or 

 four times as long as palm __________________________ fculnc, p. 420. 



C*. No oblique tuberculate ridge on inner surface of palm extending upward 



from lower margin. 



D*. Abdomen of male very wide, no segments fused. Antero-lateral 

 angles obtuse and blunt _____________________ subcyliiulriai, p. 419. 



D*. Abdomen of male moderately wide, third to sixth segments 

 fused. Antero-lateral angles either acute or right angles. 



latimunus, p. 422. 



ANALOGOUS SPECIES ON OPPOSITE SIDES OF THE CONTINENT. 

 Atlantic. Taciflc. 



maracoani. monilifcra. 



spcciusa. crcniilata. 



subcylindrica. stcnodactylua. 



Species on both sides of the continent : mordax. 



Species not determinnble: 



" Gelasimus puyilator " Cano, 1 not (Bosc). Panama. 



" Gelasimus vocator" Cano. 1 Gulf of Panama. 



Uca vocator Doflein. 2 Guayaquil, Ecuador. 



Uca vocator, var., Nobili. 3 Esmeraldas, Ecuador. 



UCA MARACOANI (Latreille). 



Plate 130, figs. 2 and 3 ; plate 131, fig. 3. 



Maracoani MARCCRAVE DE LIEBSTAD, Hist. Rer. Natur. Brazil, 1G43, p. 184, 



text-fig. ; Brazil. 

 Cancer palustris cunicnlos sub terra agcns SLOANE, Nat. Hist. Jamaica, 



vol. 2, 1725, p. 2GO; Jamaica. 

 Ocypodc maracoani LATEEILLE, Hist. Nat. Crust., vol. 6 (an 11) 1802-1S03, 



p. 4G; Cayenne. 

 Ocypodc hctcrochclos OLIVIEB, Eucyc. M6th., Insectes, vol. 8, 1811, p. 417 



(part). 

 Gclasima maracoani LATREILLE, Nouv. Diet. Hist Nat., vol. 12, 1817, p. 519 ; 



Tabl. Encyc. Meth., Crust, vol. 24, 1818, pi. 296, fig. 1. 

 Gonoplax maracoani LAMABCK, Hist. Nat. Aiiim. sans Vert., vol. 5, 1818, 



p. 254. 

 Gelasimus maracoani MILNE EDWARDS, Ann. Sci. Nat, ser. 3, vol. 18, 1852, 



p. 144 [1081, pl. 3. figs. 1-3 It. KINGSLEY, Proc. Acad. Nat. Sci. Phila- 



delphia, 1880, p. 13G, pl. 9, fig. 1 (part) ; not G. armatus Smith, nor 



G. nutalcnsis Wilson, MS. 



Diagnosis. Front very narrow, spatuliform. Movable finger of 

 large claw widest in distal half. Fingers rough. Carapace with 

 dorsal side-margins. 



Boll. Soc. Nat. Napoll. ser. 1. vol. 3. 18SO. p. 233. 



Sitzungsb. k. bayer. Akad. Wiss., math.-phys. Cl., vol. 29. 1S99, p. 101. 



Boll. Mus. Zool. Anat. comp. R. Univ. Torino, vol. 1(5, No. 415, 1901, p. 49. 



