number (8 — 9). In the specimen from Madura there are only 6 — 7 transverse tubercles, widely 

 separated, and placed irregularly in the ventral part of the organ. 



De Man l ) already notes the much pronounced tubercles on the first sternal joint, at 

 either side of the terminal segment of the abdomen of the (f. 



Uca Leach. 



1815. Uca Leach. Transact. Linn. Soc. London, v. 11, p. 309. 

 1820. Gelasimus Latreille. Dict. Sc. Nat., t. iS, p. 286. 

 Description: ALCOCK, 1. c. p. 350. 



The species of Uca are yet more frequently met with than those of Ocypoda on all 

 tropical shores, where they live in great swarms, as is generally known ; they prefer, however, 

 muddy, not sandy, beaches. Alcock 2 ) and, in recent years, Pearse 3 ) have given a fascinating 

 account of their peculiar habits. 



Earlier writers (H. Milne-Edwards, 'S. J. Smtth, Kingsley) have reviewed the genus, but 

 the best synopsis of the Indo-Pacific species has been given by de Man 4 ). Ortmann prepared a 

 key for all the species. Vet there has remained some confusion in the broad-fronted species, and 

 Ortmann 6 ) is inclined to unite these species all in one species, Uca gaimardi H. Milne-Edwards. 



The following new species have been described after the revision of de Man in 1891: 



U. zamboangana Rathbun. Proc. U. S. Nat. Mus., v. 44, 191 3, p. 615, pi. 74, from the Philippines. 

 U. mearnsi Rathbun. L. c. p. 616, pi. 75, f. 1 — 2, also from the Philippines; only the 9 is known. 

 U. novae-guineae Rathbun. L. c. p. 617, pi. 76, from New Guinea. 



U. rathbunae Pearse. Philippine Journ. Sc, v. 7, sect. D, 191 2, p. 91, textfig. 1, from Manila 



(Philippines). 



Two new subspecies have been added : 

 U. inversa (Hoffmann) subsp. sindensis Alcock, 1. c. p. 356. 

 U. annulipcs (Latreille) subsp. orientalis Nobili. Boll. Mus. Torino, t. 16, n" 397, 1901, p. 13, f. A. 



Besides, the following alterations in the nomenclature have been made : 

 U. vocans H. Milne-Edwards should be called U. marionis Desmarest. 

 U. forcipata (Adams et White) de Man cannot retain its name, as the species described 

 by the monographers of the "Samarang" is wholly unrecognizable; Ortmann (l.c, 1897, p. 350) 

 proposes therefore to name de Man's species (l.c, 1891, p. 32, pi. 3, f. 9) Uca demani. I cannot 

 make out, whether Miss Rathbun's specimens 7 ) from Monte Bello Islands, western Australia, 

 are either the true forcipata or demani. 



1) Notes Leyden Mus., v. 3, 1881, p. 251. 



2) Ann. Mag. Nat. Hist. (6) v. 10, 1892, p. 415. 



3) Philippine Journ. Sc, v. 7, sect. D, 1912, p. 113. Also reprinted in: Smithson. Rep. 1913, 1914, p. 415. 



4) Notes Leyden Mus., v. 13, 1S91, p. 20. 



5) Zool. Jahrb., Syst., Bd 7, 1894, p. 749. 



6) Zool. Jahrb., Syst., Bd 10, 1897, p. 354. 



7) Proc. Zool. Soc. London, 1914, p. 661, pi. 2, f. 8. 



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