338 Records of tJic hid id 11 Museuui. [Vol. XVI, 



tinuous posteriorly ; outer surface of palm 

 without a carina, its upper border rounded T. sfnpletoiii. 

 ii. Anterior breadth of carapace more than i^ 

 times its lent^th ; front rounded ; crest defin- 

 ing lateral border of carapace continuous 

 throughout its length ; outer surface of 

 palm with a fine carina running to tip of 

 fixed finger, its upper border crested ... T. desclia»ipsi. 



B. Carpus of cheliped with a tooth on its inner aspect. 

 [Front not less than one quarter anterior breadth of 

 carapace ; male abdomen with 5th segment very slightly 

 constricted.] 



1. Surface of carapace with numerous small furry 



patches ; carpus of cheliped short, its upper surface 

 about I5 times as long as broad ; palm without 

 carinae on Icwer surface; fingers with large teeth 

 in male ... .. ... T. lingii/nfus. 



2. Surface of carapace without furry patches ; carpus of 



cheliped elongate, its upper surface twice as long 

 as broad ; lower surface of palm bounded by fine 

 carinae ; fingers without large teeth. 

 a. Lower border of orbit with a large projecting 

 lobe near its outer end ; lateral margin of 

 carapace sinuous ... ... ... T. orientalis. 



I). Lower border of orbit without a projecting lobe ; 



lateral margin of carapace regularly convex ... T. gangeticiis. 

 IL Hyestalk with a long terminal style projecting far beyond 

 cornea. [Front about one fifth anterior breadth of carapace ; 

 orbits oblique ; lateral border loncave ; carpus of cheli- 

 ped elongate] ... ... ... ... T. ccratuphora. 



Koelbel has suggested that T. ceratophora should be placed in 

 a separate subgenus, T. methypocoelis, but I do not think this 

 necessary. 



Of the eleven species I have seen all but T. philippinensis, 

 T. integer and T. ceratophora. T. stevensi, T. f rater, T. stapletoni , 

 T. orientalis, T. gangeticus and T. lingulatus are Indian species. 



Tympanomerus pusillus (de Haan). 



1S35. Ocypode (Cleistostoiiia) piisilla, de Haan, in Siebold's Faun. Japan.. 



Crust., p. 56, pi. xvi, fig. I. 

 1852. Cleistostonia pusilla, Milne-Edwards, Ann. Sci. )uit., Zool., (^) 



XVIIL p. 160. 



1888. Dioxippe pusilla, de Man, Journ. L'mn. Soc, ZooL, XXII, p. 137. 



1889. Dioxippe pusilla, de Man, Zool. "jfahrb,, Syst., IV, p. 447. 



1902. Cleistostoma pusillum, Doflein, Ahh. math.-phys. Classe K.Bayer 

 yl/^'fl^. Wiss. XXI, p. 667. 

 Japan. J. Anderson i^per ]. G. de Man). Two. 



_o 7 9 



Tympanomerus philippinensis, Rathbun. 



1914. Tympanome 'US pJiilippi)iensis, Rathbun, Proc. U.S. Nat. Mus., 

 XLVII.p. 84. 



Guijulugan, Negros, Philippine Is. 



Tympanomerus integer, Tesch. 



1918. Tympanomerus integer, Tesch, Decap. Brachyur. ' .Sibnga' Exped. I, 

 p. 54, pi. iii, fig. I. 



Kur I.^ west of Kei Is., Banda Sea. 



