12Ó 



Some species described by Milne-Edwards are very badly known; such are: C. whitei, 

 C. granulosus, C. reynaudi and C. eydouxi. Most likely they are synonymous to others. 



Key to the Indo-Pacific species : 



i. Lateral margins of carapace convex 2 



Lateral margins of carapace straight, subparallel or even 



divergent backward 5 



2. Meropodites of walking legs very broad, foliaceous, wi- 



denincr distally and sharply keeled C. /ophopus Nobili l ) 



.Meropodites of walking legs slender, not foliaceous . . 3 

 V Abdomen of cf very broad, with the lateral margins 

 parallel, penultimate segment at base nearly three times 



as broad as terminal segment C. cinereits Dana 2 ) 



Abdomen of rf with the lateral margins convergent 

 towards the terminal segment 4 



4. Inner surface of palm of chela with a longitudinal row 



of sharp granules; palm itself higher than long . . C. audouini H. Milne-Edwards 3 ) 

 Inner surface of palm mostly smooth, bat in large indi- 

 viduals with a longitudinal row of some low oranules; 

 palm itself longer than high C. punctatus H. Milne-Edwards 4 ) 



5. Anterior half of carapace rather strongly and closely 



punctate. Inner margins of fingers of chela not dentate C. granuldtus Dana °) 

 Carapace smooth or sparsely punctate 6 



6. Lateral margins of carapace divergent backward and with 



two obscure notches anteriorly. Regions tolerably distinct C. longipcs Stimpson c ) 



1) Buil. Mus. Paris, t. il, 1905, p. 411; Ann. Sc. Nat. (9) t. 4, 1906, p. 321, pi. II, f. 4. Hab. Red Sea. 



2) Proc. Ac. Nat. Sc. Philadelphia, 1851, p. 251; U.S. Expl. Exp., Crust., 1852, p. 360, pi. 23. f. 3; Cyclograpsus tydouxi~> 

 H. Milne-Edwards, Ann. Sc. Nat. (3) t. 20, 1853, p. 198; C. cinercus Rathhun, Buil. U.S. Fish. Comm. for 1903, v. 23, pit 3, 1906, 

 p. S40: Proc. U.S. Nat. Mus., v. 38, 1911, p. 590. Hab. west coast of America and Hawaiian Islands. 



3) Hist. nat. Crust., t. 2, 1837, p. 78; Ann. Sc. Nat. (3) t. 20, 1853, p. 197; Dana, U.S. Expl. Exp., Crust., 1852, p. 359, 

 pi. 23, f. 2; C. lavauxi H. Milne-Edwards, Ann. Sc. Nat. (3) t. 20, 1S53, p. 197; C. whi/ei? H. Milne-Edwards, Ann. Sc. Nat. (3) t. 20, 

 1853, p. 197; C. laevis Hess, Arch. Naturgesch., Jahrg. 31, 1., 1865, p. 152; C. lavauxi Miers, Cat. Crust. New Zealand, 1879, p. 41; 

 C. lavauxi Haswell, Cat. Austral. Crust., 1882, p. 103; Fll.HOL, Miss. He Campbell, t. 3, prt 2, 1885, p. 390, pi. 41, f. 6; C. laevis 

 de Man, Zool. Jahrb., Syst., Bd 2, 1SS7, p. 700; C. punctatus (part.) Ortmann, Zool. Jahrb., Syst, Bd 7, 1894, p. 729; C. audouini 

 Stimpson, Smithson. Inst., Miscell. Coll., v. 49, 1907, p. 132. Hab. east coast of Australia, New Guinea and New Zealand. De Man stated 

 the identily of C. laevis Hess with C. lavauxi H. Milne-Edwards and the latter has been usually considered synonymous with C. audouini 

 of the same author, though the original specimen of C. audouini came from New Guinea, and that of C. lavauxi from New Zealand. 

 De Man afterwards (Zool. Jahrb., Syst., Bd 9, 1896. p. 352) had the opportunity of examining oviginal specimens both of C. audouini 

 and C, 'arauxi. but he does not expressly state any difference between them. Some authors (Haswell) deny, that the C. audouini of Dana 

 should be identical with that of Milne-Edwards. 



4) Hist. nat. Crust., t. 2, 1837, p. 78; Gnathochasmus barbatus Mc Leay, Smith's 111. Zool. S. Africa, 1S38, p. 65, pi. 3; 

 Sesarma barbata': Krauss, Südafr. Crust., 1S43, P- 45i P'- 3, f. 3 ; Cyclograpsus punctatus and C. reynaudi H. Milne-Edwards, Ann. Sc. 

 Nat. (3) t. 20, 1853, p. 197, pi. 7, f. 9; Haswell, Cat. Austral. Crust., 1882, p. 104; Ortmann (part.), Zool. Jahrb., Syst., Bd 7, 1894, 

 p. 729; STIMPSON, Smithson. Inst., Miscell. Coll., v. 49, 1907, p. 132; Stebbing, S. A. Crust, pit 5, 1910, p. 318; RaTHBUN, Proc. U.S. 

 Nat. Mus., v. 38, 191 1, p. 590. Hab. Cape of Good Hope, but also Tasmania, Hongkong, Juan Fernandez and Chile. 



5) Proc. Ac. Nat. Sc. Philadelphia, 1851, p. 251; U.S. Expl. Exp., Crust., 1852, p. 361, pi. 23, f. 4; Rathhun, Buil. U.S. 

 Comm. for 1903, v. 23, prt 3, 1906, p. 840. Hab. Hawaiian Islands. 



6) Proc. Ac. Nat. Sc. Philadelphia, 1S5S, p. 105.: DE Man, Zool. Jahrb., Syst., Bd 9, 1S96, p. 355, Bd 10, 1S9S, pi. 32, f 43; 

 N, Smithson. Inst., Miscell. Coll, v. 49, 1907, p. 131: Rathbun, Mem. Mus. comp. Zool. Harvard Coll., v. 35, n° 2, 1907, p. 36. 



Islands, Atjeri, Tahiti, Paumotus and Fiji Islands. 



126 



