158 PACHYGRAPSUS MINUTUS ALPH. M. EDW. 



11. Metopograpsus oceanicus Hombron et Jacquinot. 



Confer: Milne Edwards, Anuales des Sciences Naturelles , 

 1853, pag. 166. 



The Museum contains three specimens from Gebeh and 

 three from Amboina. 



12. Metopograpsus quadridentatus Stimpson. 



Stimpson , in : Proceed. Acad. Natural Sciences of Phi- 

 ladelphia, April 1858, pag. 102. 



The Museum received ten specimens, collected on the 

 shores of Amoy, China, by Mr. G. Schlegel. 



This species is most closely allied to the former , but 

 may be distinguished by the following characters. The 

 protogastrical lobes are much less prominent in this species 

 than in Metopogr. oceanicus Hombr. et Jacquinot and the 

 front less declivous. The internal suborbital angle is nar- 

 rower and more acute in oceanicus^ broader and more 

 rounded in the other form. Finally the upper surface of 

 the wrist , the upper surface of the palm and of the mo- 

 bile finger is much more strongly granulated in Metop. 

 oceanicus , than in quadridentatus. Also the oblique ru- 

 gosities of the under surface of the palm are more pro- 

 nounced in the species of the x\strolabe than in that , 

 described by Mr. Stimpson. 



For the rest, as regards the shape and the structure of 

 the ambulatory legs, these two species wholly agree with 

 one another. — The original specimens, described by Mr. 

 Stirnpson , were found on the shores of the Bay of Cum- 

 sing-moon near Hongkong, quite in the neighbourhood 

 of the locality of our specimens. — Mr. Kingsley (Proc. 

 Philadelphia, 1880, p. 191) is wrong in uniting this spe- 

 cies with Metop. oceanicus. 



13. Pachygrapsus minutus Alph. M. Edw. 



Confer: Nouv. Archives du Musee, t. VIII, pag. 292, 

 PI. XIV, fig. 2. 



JN'otes from the Leyden Aluseum , "Vol. "V. 



