STALK-EYED CRUSTACEA 289 



8. Sarmatium. 



Sarmatmni .... Dana, Kingsley. 

 Metagrapsus . . . H. Milne Edwards. 



Carapace convex, sides bowed, entire or toothed. 

 Front inclined, less than half the width of the carapace. 

 External maxillipedes nearly as in Sesarma. Walking 

 legs with the margins entire. 



Range. — Martinique, Samoan Islands, Senegal, New 

 Caledonia, Celebes. 



I. Sarmatium pectinatum. 



Sarinatiuni pectbiatum . . Kingsley. 

 Metagrapsus pectinatus . . H. Milne Edwards. 



The sides of the carapace have two teeth behind the 

 orbital angle. The hands are roughened, and have a 

 pectinate crest on the outside. 



Range. — Martinique. 



9. Sesarma. 



Sesaniia . 

 P achy soma 

 Holovietopus 

 Cancer . . 

 Grapsus 



Say, Kingsley, Miers. 



De Haan. 



Milne Edwards. 



Linne. 



Fabricius. 



Carapace thick, quadrate ; lateral margins straight, 

 entire or toothed, broader than long. Front rather broad, 

 and abruptly deflexed, with the anterior margin straight 

 or sinuated ; the epigastric lobes prominent and defined 

 externally by a suture (except in Holovietopus, Milne Ed- 

 wards). Orbits large, with an hiatus below the exterior 

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