4 6 



bordered by sti f f bris tles and leading into the branchial cavity, in the same 

 way as occurs in Ocypoda and Uca, where, however, this opening is found between the bases 

 of the second and third ambulatory legs. 



The four known species of the genus, none of which are found in the Indo-Malayan 

 region, mav be distinguished by means of the following key : 

 i. Carapace obscurely sculptured, slightly granulate or hairy on 

 branchial regions. Fifth segment of abdomen of cf con- 



stricted at base, but not linear 2 



Carapace at inner branchial region sculptured on a petaloid 



pattern. Fifth segment of abdomen of c? much constricted, 



linear. Dactyli of walking legs in the i st to 3 d pair of 



* walking legs a little longer than, in the last pair twice as 



long as, the propodites Sc. crabricaudct Alcock l ) 



2. Side walls of body covered with setiferous granules; carapace 



granular, the granules partly arranged on irregular tuber- 

 cles. Side borders of carapace diverging backward, external 

 órbital angle with an emargination immediately behind. 

 Tympana on meropodites of walking legs not subdivided 3 

 Carapace irregularly granular; side borders parallel; external 

 orbital angle not foliowed by an emargination. Eye-stalks 

 very thick, club-like (as in Ocypoda). Tympana on mero- 

 podites of walking legs subdivided by a longitudinal ridge Sc. investigatoris Alcock 2 ) 



3. Meropodite of cheliped very short, not projecting beyond 



carapace; carpopodite (wrist) with a spine at inner border; 

 movable finger near base of cutting margin with a large, 



quadrangular tooth Sc. inflata A. Milne-Edwards s ) 



Meropodite of cheliped elongate, nearly equalling length of 

 carapace and projecting beyond the latter; carpopodite and 

 movable finger unarmed Sc. globosa de Haan 



1. Scopimera globosa de Haan. PI. 3, Fig. 3. 



1835. Ocypode (Scopimera) globosa de Haan. Faun. Japon., Crust, p. 53, pi. II, f. 3, pi. C. 



1852. Scopimera globosa H. Milne-Edwards. Ann. Sc. Nat. (3) t. 18, p. 153. 



1858. Scopimera tüberculata Stimpson. Proc. Acad. Nat. Sc. Philadelphia, 1858. p. 98. 



1890. Scopimera globosa F. Muller. Verhandl. naturforsch. Gesellsch. Basel, Bd 8, p. 475- 



1894. Scopimera globosa Ortmann. Zool. Jahrb., Syst, Bd 7, p. 747. 



1898. Scopimera globosa Koelbel. Wiss. Erg. Reise Béla Széchenyi in Ost-Asien, Bd 2, p. 572. 



1907. Scopimera tüberculata Stimpson. Smithson. Inst., Miscell. Coll., v. 49, p. 102. 



This Japanese species, that has been recorded also from Ceylon by F. Muller, was not 



1) L.c. p. 370. IU. Zool. "Investigator", Crust. prt IO, 1902, pi. 63, f. 5. Found at Karachi. 



2) L.c. p. 369. IU. Zool. "Investigator", Crust. prt 10, 1902, pi. 63, f. 4. Collected at Diamond Island (Buvma). 



3) Journ. Mus. Godeffroy, t. 4, 1873, p. 83. The locality is only given as: "Mers des Indes". 



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