's RIJKS MUSEUM VAN NATUURLIJKE HISTORIE — LEIDEN. 175 



surface is slightly granular towards the upper margin, which itself has 

 no row of spiniform tubercles but only a dense crowding of somewhat 

 larger granules; a large and distinct crest runs close to and parallel with 

 the under margin and is continued on the index. Inner surface of palm 

 and fingers much hairy, a spine at the inner surface of the palm near 

 the carpal joint. Fingers hairy along the cutting margin ; the dactylus 

 has an extremely small quadrangular tooth close to the base, the index 

 is provided with a much larger tooth, the base of which is about as 

 large as the height, the free margin of the tooth is coarsely granulated, 

 except for the abruptly sloping fore side. 



The differences between the species here named and M. carinimanus 

 (= M. brevis) are also clearly indicated by de Man. I need not enlarge upon 

 these differences here as I have nothing but to repeat de Man's statements. 



M. crassipes is represented in the collection only by a single spe- 

 cimen (cT), this very specimen has been already described by de Man, 

 who gave also the dimensions of the carapace (distance between external 

 orbital angles 22.5 mm., length of carapace 10.25 mm.) ; it originates 

 from the Carolines. 



The range of this species has recently been extended to the Gulf of 

 Siam ; as it occurs also at the shores of China, of Australia and of the 

 Carolines, it is remarkable that it has never been recorded from our 

 East-Indian Archipelago. 



M. convexus Stimpson (PL VII, Fig. 8). 



1858. M. convexus Stimpson. Proc. Ac. Nat. Sc. Philadelphia, v. 10 p. 97 

 (Loo-Choo-isles). 



1867. „ inerptis A. Milne-Edwards. Ann. Soc. ent. France, sér. 4, t. 7 

 p. 286 (Sandwich-isles). 



1873. „ inermis A. Milne-Edwards. Nouv. Arch. Mus. d'Hist. nat. Paris, 

 t. 9 p. 277, pi. 12 f. 5 (New Caledonia). 



1873. „ graeffei A. Milne -Edwards. Journ. d. Museums Godeffroy, Heft 4 

 p. 81, pi. 13 f. 5 (Upolu, Samoa). 



1880. „ convexus Miers. Ann. Mag. Nat. Hist. ser. 5, v. 5 p. 307 (Mau- 

 ritius, Penang, Singapore and Australia). 



1882. „ convexus Haswell. Cat. Austral. Crust., p. 89 (Australia). 



1888. „ convexus de Man. Arch. Naturgesch., Jahrg. 53. l.p. 354, pi. 15 

 f. 4 (Amboina). 



1894. „ convexus Ortmann. Zool. Jahrb. Abt. Syst., Bnd. 7 p. 745 (Caro- 

 lines, Fidsji-isles, Tahiti and German New Guinea). 



1897. „ convexus Ortmann. Zool. Jahrb. Abt. Syst., Bnd. 10 p. 344 (no 

 new record). 



