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1. Pachygrapsus p/icafus (H. Milne-Edwards). 



1837. Grapsus plicatus H. Milne-Edwards. Hist. nat. Crust., t. 2, p. 8g. 

 1843. Grapsjis plicatus ^) Krauss. Stidafr. Crust., p. 43, pi. 3, f. i. 



1852. Goniograpsus plicatus Dana. U. S. Expl. Exp., Crust., p. 343. 



1853. Grapsus plicatus H. Milne-Edwards. Ann. Sc. Nat. (3J t. 20, p. 170. 



1858. Pacliygrapsus plicatus Stimpson. Proc. Ac. Nat. Sc. Philadelphia, 185S, p. 102. 



1873. Pachygrapsus striatus A. Milne-Edwards. Journ. Mus. Godeftroy, t. 4, p. 82. 



1873. Pacliygrapsus plicatus A. Milne-Edwards. Nouv. Arch. Mus. Paris, t. 9, p. 292, pi. 14, f. i. 



1880. Pacliygrapsus plicatus Kingsley. Proc. Ac. Nat. Sc. Philadelphia, 1880, p. 200. 



1894. Pachygrapsus plicatus Ortmann. Zool. Jahrb., Syst., Bd 7, p. 708. 



1903. Pachygrapsus plicatus Borradaile. Faun. Geogr. Maldives etc., v. i, p. 432. 



1906. Pacliygrapsus plicatus Rathbun. Bull. U. S. P'ish Comm. for 1903, v. 23, prt 3, p. 839. 



1907. Pachygrapsus plicatus Stimpson. Smithson. Inst., Miscell. Coll., v. 49, p. 117. 



1907. Pachygrapsus plicatus Rathbun. Mem. Mus. comp. Zool. Harvard Coll., v. 35, n" 2, p. "29. 

 igii. Pachygrapsus plicatus Rathbun. Transact. Linn. Soc. London (2) v. 14, p. 241. 



Stat. 34. Labuan Pandan, Lombok. i 9 (with eggs). 



This well marked species is rather common in the Pacific region ; the records from the 

 Indian region are scanty (Borr.adaile, R.\thbl"N, 191 i). 



2. Pachygrapsus mitiutus A. Milne-Edwards. 



1873. Pachygrapsus minutus A. Milne-Edwards. Nouv. Arch. Mus. Paris, t. 9, p. 292, pi. 14, f. 2. 



1880. Pachygrapsus miuutus Kingsley. Proc. Ac. Nat. Sc. Philadelphia, 1880, p. 201. 



1883. Pachygrapsus minutus de Man. Notes Leyden Mus., vol. 5, p. 158. 



1888. Pachygrapsus miuutus de Man. Journ. Linn. Soc. London, v. 22, p. 148. 



1888. Pachygrapsus minutus de Man. Arch. Naturgesch., Jahrg. 53, i., p. 368. 



[889. Pachygrapsus minutus Cano. Boll. Soc. Nat. Napoli, t. 3, p. 240. 



1900. Pachygrapsus minutus Alcock. Journ. As. Soc. Bengal, v. 69, prt 2, p. 399. 



1900. Pachygrapsus minutus Borradaile. Proc. Zool. Soc. London, 1900, p. 592. 



1903. Pachygrapsus minutus Borradaile. Faun. Geogr. Maldives etc., v. i, p. 432. 



1905. Pachygrapsus minutus Lenz. Abhandl. Senckenb. Gesellsch., Bd 27, p. 370. 



1906. Pachygrapsus minutus Rathbun. Bull. U. S. Fish Comm. for 1903, v. 23, prt 3, p. 840. 



1907. Pachygrapsus minutus Rathbun. Mem. Mus. comp. Zool. Harvard Coll., v. 35, n" 2, p. 30. 

 191 1. Pachygrapsus minutus Rathbun. Transact. Linn. Soc. London (2) v. 14, p. 242. 



191 3. Pachygrapsus minutus Pesta. Uenkschr. Ak. Wiss. Wien, Bd 88, p. 61. 



Stat. 129. Karkaralong Islands, south of Mindanao, i c^ . 



This small species that is distributed throughout the whole Indo-Pacific region, presents at 

 the hind margin of the meropodites of the posterior walking legs, besides the large spine near 

 the distal end, that is followed by a much smaller one, also a small, obtuse prominence at the 

 end of the proximal third part of this margin, and this prominence is marked by a long hair. 



3. Pachygrapstis planifrons de Man. 



1888. Pachygrapsus planifrons de Man. Arch. Naturgesch., Jahrg. 53, i., p. 36S, pi. 16, f. 2. 

 1893. } Pachygrapsus longipcs Rathbun. Proc. U.S. Nat. Mus., v. 16, p. 247. 



l) Accoiding to Dana, howevev, the specimens of Krais5 belong to an independent species, which is called Goniograpsus 

 kraussi^ distinguished by having numerous teeth along the posterior margin of the meropodites of the last pair of legs. H. Milne-Ei>\vards 

 (1853) followed Uana, but persisted in referring the species to Grapsus. 



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