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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. iridens de Haan ^j 



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 H. spiiiicarpa H. Milne-Ed w. -) 



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. gaudichaiidi 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 //. latreilli (H. Milne-Edw.) '') 



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 >d*vvj>Xc.«-'-j-' ■ oV»c-w"^ 



proximal part of outer surface H. IcacJii Hess 



cT with some few hairs only between bases of fingers, 

 externally; a somewhat larger tuft on palm, quite near 

 articulation with wrist; palm not carinate ....//. stibqiiadrata (Dana) 



1) Ocypode (Hclici) Iridcns de Haan, Faun. Japon., Crust., 1835, p. 57. pi. 11, f. 2, pi. 15, f. 6; Hdice t. H. Milne-Bdwaids, 

 Ann. Sc. Nat. (3) t. 20, 1853, p. 189; Targioni-Tozzetti, Viaggio "Magenta", Crost., 1877, p. 155, pi. 10, f. 2; MiERS, Troc. Zool. Soc. 

 London, 1879, p. 38; Kingsley, Pioc. Ac. Nat. Sc. Philadelphia, 1880, p. 219; Ortmann, Zool. Jahrb., Syst., Bd. 7, 1S94, p. 727; 

 KOELBEL, Wiss. Erg. Keise Szechenyi 1877—1880, Bd 2, 1898, p. 570; SxiMi'SON, Smithson. Inst., Miscall. Coll., v. 49, 1907, p. 133. 

 Hab. Japan, Hongkong and Loo-Choo Islands. 



2) Ann. Sc. Nat. (3) t. 20, 1853, 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 

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



4) Cyclograpsiis g. H. Milue-Edwards, Hist. nat. Crust., t. 2, 1837, p. 79; Paiggrapsiis g. H. Milne-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) Cyclogiapsus latreilli H. Milne-Edwards, Hist. nat. Crust., t. 2, 1837, p. So: j^fZ/Vv /. H. Milne-Edwards, Ann. Sc. Nat. 

 (3) t. 20, 1853, p. 190; MiERS, Rep. "Challenger", Brachyura, 1886, p. 268, pi. 21, f. 2; DE Ma.n, Zool. Jahrb., Syst., Bd. 9, 1S96, 

 p. 343, Bd 10, 1898, pi. 31, f. 41. Hab. Mauritius, Philippines and Fiji Islands, Atjeh. 



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