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Greatest breadth of carapace lying between tips of anterior 

 or posterior epibranchial teeth 2 



2. Infra-orbital ridge modified into 16 — 18 large, transversely- 



striated tubercles. Musical crest on arm of cheliped in 

 both sexes. From the notch between first and second 

 epibranchial teeth a short granulate line runs inward. 



Large species from Japan H. tridens de Haan l ) 



Infra-orbital ridge, at least in cf, consisting of a few 

 elongate tubercles or finely and regularly serrulate . 3 



3. Inner margin of wrist of cheliped with a longitudinal 



series of large spiniform teeth II . spinicarpa H. Milne-Edw. 3 ) 



Inner margin of wrist of cheliped with a longitudinal 

 row of 7 — 8 sharp granules, increasing in size distally 4 



4. Carapace and chelae strongly granulate. Infra-orbital ridge 



finely transversely striate H. gaudichaudi H. Milne-Edw. : ) 



Chelae nearly smooth, finely granulate or punctate . . 5 



5. Breadth of carapace nearly equal to length H. gaimardi (H. Milne-Edw.) "*) 



Breadth of carapace distinctly exceeding length ... 6 



6. Anterior part of sternum, between abdomen and base of 



external maxillipeds hirsute. Some hairs between bases 



of fingers, externally 7 



Anterior part of sternum smooth, not hairy. No hairs 



between bases of fingers H. latreilli (H. Milne-Edw.) 3 ) 



7. cf with a rather large tuft of short hairs filling up the 



gap between the fingers and extending on proximal 

 part of inner margins; palm longitudinally carinate on 



proximal part of outer surface H. leachi Hess 



c? with some few hairs only between bases of fingers, 

 externally; a somewhat larger tuft on palm, quite near 

 articulation with wrist; palm not carinate .... //. subquadrata (Uana) 



1) Ocypodc (Helice) tridens de Haan, Faun. Japon., Crust., 1835, p. 57, pi. II, f. 2, pi. 15, f. 6; Helice t. H. Müne-Edwards, 

 Ann. Sc. Nat. (3) t. 20, 1853, p. 1S9; Targioni-Tozzetti, Viaggio "Magenta'', Crost., 1877, p. 155, pi. 10, f. 2: Miers, Proc. Zool. Soc. 

 London, 1879, p. 38; KlNGSLEY, Proc. Ac. Nat. Sc. Philadelphia, 1SS0, p. 219; Ortmann, Zool. Jahrb., Syst., Bd. 7, 1S94, p. 727; 

 Koelbei., Wiss. Erg. Reise Széchenyi 1877 — 1880, Bd 2, 1S98, p. 570; STIMPSON, Smithson. Inst., Miscell. Coll., v. 49. 1907, p. 133. 

 Hab. Japan, Hongkong and Loo-Choo Islands. 



2) Ann. Sc. Nat. (3) t. 20, 1S53, p. 190. Hab. unknown. 



3) Ann. Sc. Nat. (3) t. 20, 1853, p. 190. Hab. Sumatra. This species in its strong granulation of carapace and chelae resembles 

 Chasmagnathus granulatus Dana (U.S. Expl. Exp., Crust., 1852, p. 364, pi. 23, f. 6), but this is an Atlantic (Brazilian) species. 



4) Cyclograpsus g. H. Müne-Edwards, Hist. nat. Crust., t. 2, 1S37, p. 79; Paragrafsus g. H. Müne-Edwards, Ann. Sc. Nat. 

 (3) t. 20, 1853, p. 196; Haswlll, Cat. Austral. Crust., 1882, p. 105, pi. 2, f. 4. Hab. Australia and Tasmania. 



5) Cyclograpsus latreilli H. Milne-Edwards, Hist. nat. Crust., t. 2, 1837, p. 80: Helice l. H. Müne-Edwards. Ann. Sc. Nat. 

 (3) t. 20, 1S53, p. 190: Miers, Rep. "Challenger", Brachyura, 1886, p. 26S, pi. 21, f. 2: DE Man, Zool. Jahrb., Syst., Bd. 9. 1896. 

 p. 343. Bd 10, 1S98, pi. 31, f. 41. Hab. Mauritius, Phüippines and Fiji Islands, Atjeh. 



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