I05 



6. Suborbital ridge very minutely transversely striate, to the 



naked eye apparently quite smooth ; anterior margin of 

 front sinuous. Carapace and legs covered with minute 



red spots. Chelipeds of cf quite naked B. sangtiineus (de Haan) ') 



Suborbital ridge granulate or finely serrate 7 



7. Suborbital ridge entirely serrate, the serrations 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. crenulattis (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 cT 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 ■') 



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. iiudits (Dana)') 



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

 Ambulatory legs fringed with hairs, especially last pair . B. ajffitiis (Dana) ") 



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

 Sc. Nat. (3) t. 20, 1853, p. 193; Helerograpsus ittacuSatus H. Milne-Edwards, ibid.j*p. 193; Hemigrapsus crassimanus Dana, Proc. Ac. 

 Nat. Sc. Philadelphia, 1851, p. 250; Dana, U. S. Expl. Exp., Crust., 1852, p. 349, pi. 22, f. 4; Helerograpsus sanguineus de Man, 

 Notes Leiden Mus., v. i, 1879, p. 70; Kingslev (part.), Proc. Ac. Nat. Sc. Philadelphia, 18S0, p. 208; Thallwitz, Abhandl. Mus. 

 Dresden, Bd 3, n" 3, 1891, p. 41; Brachynotus s. Koelbel, Wiss. Erg. Reise Szechenyi 1877 — 1880, Bd. 2, 1898, p. 571, pi. i, 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, Bull. U.S. Fish Comm. for 1903, v. 23, 1906, p. 839; Helerograpsus sanguineus Stimpson, Smithson. Inst., Miscell. 

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



2) Cyc/ograpsus crenulatus H. Milne-Edwards, Hist. nat. Crust., t. 2, 1837, p. 80; Grapsus c. Guerin, Voy. "Coquille", Crust., 

 t. 2, 1838, p. 15; Hemigrapsus c. Dana, U. S. Expl. Exp., Crust., 1852, p. 349, pi. 22, f. 3; Helerograpsus c. H. Milne-Kdwards, Ann. 

 Sc. Nat. (3) t. 20, 1853, p. 193; Helerograpsus barbigerxis Heller, Verhandl. zool.-bot. Gesellsch. Wicn, 1862, p. 522; Helerograpsus 

 barbimanus Heller, Reise "Novara", Crust., 1865, p. 53, pi. 4, f. 5 ; Helerograpsus crenulalus Kingsley, Proc. Ac. Nat. Sc. Philadelphia, 

 1880, p. 208; FlLHOL, Miss, "lie Campbell, t. 3, 1885, p. 389; de Man, Notes Leiden Mus., v. 13, p. 53; Hemigrapsus c. Rathbun, 

 Proc. U.S. Nat. Mus., v. 38, 1910, p. 589. Hab. Australia, New Zealand and Chile. 



3) Cyc/ograpsus sexdenlatus H. Milne-Edwards, Hist. nat. Crust., t. 2, 1837, p. 79; Helerograpsus sexdentatus H. Milne-Edwards 

 (nee Lucas, 1849 = Gonoplax sexdenlatus 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 ; Helerograpsus sanguineus Heller (nee Grapsus sanguineus de Haan), Reise "Novara", Crust., 

 1865, p. 52; Helerograpsus sexdenlatus Kingsley, Proc. Ac. Nat. Sc. Pliiladelphia, 1880, p. 207; Brachynolus Edwardsii Hilgendorf, 

 Sitzungsber. Gesellsch. naturforsch. P'reunde Berlin, 1882, p. 70; Helerograpsus sexdenlatus Haswell, Cat. Austral. Crust., 1882, p. 100. 

 Hab. Australia and New Zealand. 



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

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

 Ac. Nat. Sc. Philadelphia, 185S, p. 104; Ortmann, Zool. Jahib., Syst, Bd 7, 1894, p. 715. Hab. west coast of North America. 



5) Hemigrapsus affinis Dana, Proc. Ac. Nat. Sc. Philadelphia, 1851, 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 ; Helerograpsus a. Kingsley, Proc. Ac. Nat. Sc. 

 Philadelphia, iSSo, y. 209; Hemigrapsus a. Nobili, Boll. Mus. Torino, t. 16, n" 402, 1901, p. 12. Hab. Patagonia and Argentinia. 



I°5 

 SIBOGA-EXPEDITIE XXXIX <-. 14 



