IO = 



6. Suborbital ridge very minutely transversely striate, to the 



naked eye apparently quite smooth ; anterior margin of 

 front sinuons. Carapace and legs covered with minute 



red spots. Chelipeds of cf 1 quite naked B. sanguineus (de Haan) : 



Suborbital ridge granulate or finely serrate 7 



7. Suborbital ridge entirely serrate, the serralions being 



directed forward ; anterior parts of carapace covered 

 with small and numerous tubercles. Whole animal 

 covered with minute red spots. Upper margins of 

 meropodites of walking legs thickly fringed with long 



hairs B. crenulatus (H. Milne-Edwards) ~) 



Suborbital ridge with obtuse granules. Carapace with 

 the regions indistinct, smooth and glabrous. Walking 

 legs entirely naked or with widely separated hairs . 8 



8. Chela of c? naked at inner surface. Meropodites of 



ambulatory legs with a rectangular prominence near 

 distal end of anterior margins ; dactyli conical, not 



depressed B. edwardsii Hilgendorf 3 ) 



Chela of cf with a patch of hairs at inner surface of 

 fixed finger. Meropodites of ambulatory legs unarmed 

 at anterior margins; dactyli much flattened B. nudus (Dana) 1 ) 



9. Ambulatory legs almost hairless, at least the meropodites 10 

 Ambulatory legs fringed with hairs, especially last pair . B. affinis (Dana) 5 ) 



1) Grapsus (Grapsus) sanguintus de Haan. Faun. Japon., 1835, p. 58, pi. 16, f. 3; Heterograpsus s. H. Milne-Edwards, Ann. 

 Sc. Nat. (3) t. 20, 1853, p. 193; Heterograpsus maculatus H. Milne-Edwards, i b i cl., p. 193; Hemigrapsus crassimanus Dana, Proc. Ac. 

 Xat. Sc. Philadelphia, 1S51, p. 250; Dana, U. S. Expl. Exp., Crust., 1852, p. 349, pi. 22, f. 4; Heterograpsus sanguintus de Man, 

 Notes Leiden Mus., v. 1, 1879, p. 70; Kingsley (part.), Proc. Ac. Nat. Sc. Philadelphia, 1880, p. 208; Thai.lwitz, Abhandl. Mus. 

 Dresden, Ed 3, n» 3, 1891, p. 41; Brachynotus s. Koelbel, Wiss. Erg. Reise Széchenyi 1877 — 1.880, Bd. 2, 1898, p. 571, pi. 1, f. 7; 

 Ortmann, Zool. Jahrb., Syst., Bd 7, 1894, p. 714; Hemigrapsus s. Rathbun, Proc. U. S. Nat. Mus., v. 26, 1903, p. 24; Hemigrapsus 

 crassimanus Rathbun, Buil. U.S. Fish Comm. for 1903, v. 23, 1906, p. 839; Heterograpsus sanguineus Stimpson, Smithson. Inst., Miscell. 

 Coll., v. 49, 1907, p. 126. Hab. Japan and Hawaii. 



2) Cyelograpsus crenulatus H. Milne-Edwards, Hist. nat. 'Crust., t. 2, 1837, p. 80; Grapsus c. Guérin, Voy. "Coquille", Crust., 

 t. 2, 1S38, p. 15: Hemigrapsus c. Dana, U. S. Expl. Exp., Crust., 1852, p. 349, pi. 22, f. 3; Heterograpsus c. H. Milne-Edwards, Ann. 

 Sc. Nat. (3) t. 20, 1853, p. 193; Heterograpsus barbigerus Heller, Verhandl. zool.-bot. Gesellsch. Wien, 1S62, p. 522: Heterograpsus 

 barbimanus Heller, Reise "Novara", Crust., 1865, p. 53, pi. 4, f. 5 : Heterograpsus crenulatus Kingsley, Proc. Ac. Nat. Sc. Philadelphia, 

 1880, p. 208: Filhol, Miss. ile Campbell, t. 3, 1885, p. 389: de Man, Notes Leiden Mus., v. 13, p. 53; Hemigrapsus e. Rathbun, 

 Troc. U.S. Nat. Mus., v. 38, iglo, p. 5S9. Hab. Australia, New Zealand and Chile. 



3) Cyclograpsus sexdentatus H. Milne-Edwards, Hist. nat. Crust., t. 2, 1837, p. 79; Heterograpsus sexdentatus H. Milne-Edwards 

 (nee Lucas, 1849 = Gonoplax sexdentatus Risso 1826), Ann. Sc. Nat. (3) t. 20, 1853, p. 192, pi. 7, f. 7; Hemigrapsus s. Dana, U.S. 

 Expl. Exp., Crust., 1852, p. 348, pi. 22, f. 2 ; Heterograpsus sanguineus Heller (nee Grapsus sanguineus de Haan), Reise "Novara", Crust., 

 1865, p. 52; Heterograpsus sexdentatus Kingsley, Proc. Ac. Nat. Sc. Philadelphia, 1880, p. 207; Brachynotus Edwardsii Hilgendorf, 

 Sitzungsber. Gesellsch. naturforsch. Freunde Berlin, 1882, p. 70; Heterograpsus sexdentatus Haswell, Cat. Austral. Crust., 1882, p. 100. 

 Hab. Australia and New Zealand. 



4) I'seudograpsus nudus Dana, Proc. Ac. Nat. Sc. Philadelphia, 1851, p. 249; Dana, U.S. Expl. Exp., Crust., 1852, p. 335. 

 pi. 20. f. 7; Heterograpsus marmoratus H. Milne-Edwards, Ann. Sc. Nat. (3) t. 20, 1853, p. 193; Heterograpsus nudus Stimpson, Proc. 

 Ac. Nat. Sc. Philadelphia, 1858, p. 104; Oktmann, Zool. Jahrb., Syst, Bd 7, 1894, p. 715. Hab. west coast of North America. 



5) Hemigrapsus affinïs Dana, Proc. Ac. Nat. Sc. Philadelphia, 1S51. p. 250; Dana, U.S. Expl. Exp., Crust., 1852, p. 350^ 

 pi. 22, f. 5; Targioni-Tozzetti, Viaggio "Magenta", Crost., 1877, p. 117, pi. 7, f. 5; Heterograpsus a. Kingsley, Proc. Ac. Nat. Sc. 

 Philadelphia, 18S0, p. 209; Hemigrapsus a. Nobili, Boll. Mus. Torino, t. 16, n° 402, 1901, p. 12. Hab. Patagonia and Argentinia. 



105 



SIBOGA-EXPEDITIE XXXIX,". 14 



