N<).n02. liHACIIYlinA Cor.LKCTICD HY TIIKALBATltOSfi—IiATIIIiVN. 603 



^riic. clKilipcds i'(%seml)lo those of tlio Ccnuilc of C. ti/jHcun. Tlie (•;ui)us, 

 liovvcver, \h nearly H(niiiic, the i)ropo(lns is less arelied, and the lingers 

 taper regularly to the tips. The pro])odu8 has a line of granules on its 

 lower margin. The margins of the clieli|)e<ls are fringed with hair, 

 whieh Is longest on the upju'r margin of the morns, wlnue there is a 

 fringe on the ])roxima,l half and a tuft near the distal end. Ambulatory 

 legs shorter and broader than in (K ti/picus, hairy, esi)e(;ially on the 

 margins. Tlu^ dactyli of the (irst thr(H'- pairs are similar, broad and thin ; 

 in Plato XLIII, lig. H, the fnll width of the daetyli of the lirst and 

 second pairs is shown; those of the third i)air aie viewed oblicpiely; in 

 the fourth ]>a,ir the daetyli are narrow and recurved, as rei)re8enie(l in 

 the lignre. 



dolor. — in alcohol the <!arai)ace is a bluish gray, chelii>eds pale pink, 

 ventral side of crab and and>ulatory logs rust colored. 



IHmcnsions. — l^'emale: L(ingth, 11^.5 mm.; width, 17,8 mm. 



Ti/pr. — No. 21592, U.iS.N.M, Ojie femah^ from Magdalena r>ay, ijower 

 California, 51 fatlioms, station 2833. 



112. OCYPODE ARENARIA Say. 



Ocjipodr arenariim Say, Joiir. IMiilu. Aosul. S<;i., IS17, I, p. 09. 



Port Castries, St. Lucia; Bahia and Abrolhos Islands, Hra/il. 



113. OCYPODE GAUDICHAUDII Milne-Edwards and Lucas. 



Ocypode {/aiidichnHdii Mii.nk-Kdwauds jiiul Lucah, D'Orbit^iiy'N Voy. I'Aini'ir, 

 JVI<^ii<l., 1H.1:{, VI, rt. 1, ]). 2(1; 1817, IX, pi. xi, (if,' I. 



Panama; Chatham Island, (iala])ag()S. 



114. UCA GRACILIS Rathbun. 

 Gclafiimu8 gracilis Uatiihun, I'roc U. S. Nat. Muh., IHiKJ, XVI, p. 211. 



Pichilin(|uo liay, Culf of California. 



It is possible that this species is identical with (iclnsimns vrcnnlatiiH 

 Lockington, 1877, and this belief is held by Mr. S.J. Holmes, who has 

 examined 8i)ecimena labeled (J. crcnulatun in Lockington's collection; 

 the types are i)robably not extant. In the absence of positives ])roof I 

 hesitate to restore the earlier name. Uv<( (fracilis is a very distinct 

 species from U. Htenodaelyla (Milno-I^jdwards and Lucas) and from the 

 various forms which have been united undc^r the name U. vovaior. Its 

 nearest ally is Uca HjievAoHa (Ives). 



115. UCA STENODACTYLUS (Milne-Edwards and Lucas). 



GclaHiviUH Htr.nodaciylus Mii,NK-EnwAUi)8 and Lucas, D'Orbijiny'H Voy. I'Aiik't. 



m6r\([., lHi;5, VI, Pt. 1, i». 2(5; 1817, IX, i.l. \i, lig. 2. 

 (lela»imiin (jthhoaiiH iimiTii, Trans. Coiiii. Acad. Sc.i., 1870, li, ]>]». !!.''>, M(», pi. 11, lig. 



11; pi. IV, lig. 8. 

 Uca slenodnclyla Ortmann, Zool. Jaiirb., Sysl,., 1897, X, p. :{5<! (itarl). 



Pichilinque Bay, Gulf of California. 



