390 MR. J. 11. HENDERSON— A CONTRIBUTION 



Genus Scopimera, De Haan. 



149. Scopimera myctiroides (Milne-Edw.). 



Doto myctiroides, Milne-Edwards, Ann. Sci. Nat. ser. 3, Zool. t. xviii. p. 152, pi. iv. fig. 24 (1852). 



Rameswaram and Tuticorin ( Thurston). Common at Ranieswarani, burrowing in sand 

 and mud; Ennore (J. B. H.). 



De Man, on what are apparently good grounds, unites Dotilla, Stm. ( = Doto, De Haan, 

 nom. praeocc), and Scopimera, De Haan, selecting the former name for the genus ; but 

 Scopimera is preferable as it is the older name, and Dotilla has more recently been 

 used to designate a genus of Mollusca. 



In a very large series of this species I have as yet only met with males. There is still 

 much to be learned about the genus, especially as to the nature of the curious ' tympana ' 

 on the sterna and on the meral joints of the ambulatory legs. 



Distribution. Malabar (Milne-Fdivards) ; Strait of Gaspar (Stmipson) ; Java {Brit. 

 Mas.); Singapore {Walker); Seychelles {Miers). 



Genus Myctiris, Latr. 



150. Myctiris longicarpus, Latr. 



M. longicarpus (Latr.), De Man, Brock's Crust, p. 358 (1888). 



(==? M. brevidactylus, Stm.). 



Akyab, several specimens {Day). 



Distribution. Malay Archipelago, China, Australia and Tasmania, New Caledonia. 



Genus Metopograpsus, Milne-Edw. 



151. Metopograpsus messor (Forsk.). 



M. messor (Forsk.), De Man, Mergui Crust, p. 144, pi. is. fig. 11 (1888) ; id. Brock's Crust, p. 361, 

 taf. xv. fig. 6 (1888). 



(= Pachygrapsus cethiopicus, Hilg.). 



Tuticorin {Thurston). Very common at Rameswaram between tide-marks; common 

 at Madras {J. B. R.). 



Distribution. Erom the Red Sea, E. Africa, and Natal to the Pacific (Samoa, Eijis, 

 Sandwich Is., &c). 



Genus Grapsus, Lam. 



152. Grapsus strigosus (Herbst). 



G. strigosus (Herbst), A. Milne-Edwards, Nouv. Arch. Mus. Hist. Nat.t. ix. p. 286 (1873), ubi synon. 



Rameswaram and Tuticorin {Thurston). Abundant on the harbour walls at Madras, 

 and elsewhere on the Coromandel coast {J. B. H.). 



Distribution. Erom the Red Sea and E. Africa to the Pacific as far as the coast of 

 Chili. 



