286 STALK-EYED CRUSTACEA 



longitudinal ridges of the endostome are well defined. 

 The fourth joint of the external maxillipedes is truncated 

 distally, and slightly concave at anterior margin ; it 

 articulates with the next joint at its antero - external 

 angle. The first pair of legs, in the male, robust, subequal, 

 of moderate size ; fourth joint has a triangular section, 

 with the anterior border toothed ; the fifth joint has a 

 tooth or spine on the inner margin ; palm somewhat 

 turgid, rounded above ; fingers toothed on the interior 

 margins, and distally acute. The walking legs are short, 

 with the joints compressed and somewhat dilated ; the 

 last joint but one is ciliated on the superior margin, and 

 has spines on the inferior margin ; the terminal joint is 

 short, compressed, and has spines. The abdomen, in the 

 male, is seven-jointed. 



Range. — Found on seaweed in Atlantic and Pacific 

 Oceans. 



I. Nautilograpsus minutus. 



NautilognxpsHs viiniitus . . . H. Milne Edwards, 



Kingsley, Linne. 



Nautilograpsus aiigiistains . . Stimpson. 



Nautilograpsus Diajor ct SDiithii . M'Leay. 



Grapsus cinercus Latreille, Say. 



Grapsus pclagicus Roux, Say. 



Grapsus tcstudincuui .... Roux. 



Grapsus divis Costa. 



Planes cyancus Dana. 



Planes lijineana Bell. 



Plajies minutus White. 



Planes clypeatus Bowdich. 



Ocypoda (Grapsus) pusillus . . De Haan. 



Cancer minutus Linnc. 



Carapace smooth, arcuate in both directions, front 



