CEIISTACTOA OF THE MEE&UI AECHIPELAGO. 117 



the posterior margins of tlie meropodiies of the last pair of legs 

 of tlie female are never fringed with the tuft of short hairs found 

 in G. Dussumieri. The specimens in spirit have quite a different 

 colour from the similarly preserved specimens of G. Dussu- 

 mieri. The middle portion of the cephalothorax has a dark 

 green colour, but the sides, including the external orbital angles, 

 the lateral surfaces, and the pterygostomian regions, appear 

 yellowish. In some individuals, however, the dark green or rarely 

 bluish colour extends also upon the sides. The outer surface 

 of the palm has a beautiful intense red colour, which is parti- 

 cularly rich near the articulation of the fingers and towards 

 the inner margin. The fingers in some present a fine violet 

 colour, while in others they are yellowish, and the ambulatory 

 legs have also the same colour. 



Dimensions. 



S. S- 



vara. mm. 



Distance between the external 



orbital angles 25 23 



Length of the carapace (the front 



included) 14 13 



Length of the larger hand 42| 32 



Length of the palm 19 16 



Height of the palm 15 12| 



Length of the fingers 23| 16 



G. acutus may be easily distinguished from G. arcuatus, de 

 Haan, and O. coarctatus, M.-Edw., from New Caledonia, by the 

 shape of the cephalothorax. It is possible that some of the 

 species described by Adams and White in the 'Voyage of the 

 Samarang,' may prove to be identical with those of Milne- 

 Edwards ; according to Mr. Kings! ey, G. forcipatus, Ad. and 

 "White, is identical with G. coarctatus. 



G. acutus has hitherto been recorded only from the Chinese 

 coast, near Macao. 



