202 PROCEEDINGS OF THE ACADEMY OF [1880. 



more than half the width of the carapax. External maxillipeds 

 broad, meros broader than long. Posterior feet compressed. 



N. minutus Edwards ex Linne. 



Cancer minutus Linne Syst. Nat. Edit, xii, p. 1048 (1766). 



Grapsus minutus Latreille, Hist. Crust, et Ins., vi, p. 68 (1803-4). 



Grapsus cinereus Say, Journ. Acad. Nat. Sci. Phila. i, p. 99 (1817). 



Grapsus pelagiciis Say, 1. c, p. 443 (1818), 



Planes clypeatns Bowdich, 1. c, p. 15, PI. f. 2 (1835). 



Grapsns testudineum et pelagicus Roux, Crust. Med., PI. VI, f- 6-7 



(1838-30). 

 Ocypoda ( Grapsus) pusillus De Haan, op. cit., p. 59, PI. XVI, f. 2 



(1835). 

 Naiitilogra^isus minutus Edw., Hist. Nat. Crust, ii, p. 90 (1837). 

 Grapsus divis Costa, Fauna Napoli, Crustaces, PI. IV, f. 1 (1838-1851). 

 Planes mvtmtus Wliite, Cat. Brit. Mus. Crust, p. 43 (1847) 

 Kautilograpsiis Major et Smithii, McLeay in Smith Zool., South Africa, 



Annulosa, pp. 66-67 (1849). 

 Planes Unneana Bell, British Stalk-eyed Ciiistacea, p. 135 (1851). 

 Planes eyaneus Dana, Proc. Phil. Acad., 1851, p. 250. 

 Wautilograpsus angustatus Stimpson, Proc. Acad. Nat. Sci. Pliila., 

 1858, p. 103. 



Carapax smooth, arcuate in both directions ; front nearly 

 straight, post-orbital tooth small, sometimes obsolete. Sides 

 arcuate. Meros of chelipeds with its inner distal border dentate ; 

 Carpus with a tubercle on the inner surface ; hand smooth, fingers 

 deflexed. Ambulatorj^ feet compressed, ciliate. 



Gulf Stream! (Many Collectors); West Indies! (Dr. Griffith); Suri- 

 nam! (Dr. Hering); Falkland Is.! (Dr. Wilson); Peru! (Dr. 

 Ruschenberger) ; West Coast of Mexico ! Alaska ! (Dr. W. H. Jones) ; 

 China! (Capt. Putnam); N€^n Zealand! Natal! (Dr. Wilson); Rio 

 Ganibia! (J. Cassin); Mediterranean (Dr. Wilson); France! 

 (Guerin); " toutes des me7-8!^' (Guerin). Guerin's ideas of the dis- 

 tribution leave nothing more to be said. 



Genus EUCHIROGRAPSUS M.-Edwards, 1853. 



Carapax depressed, subquadrate, sides slightlj' arcuate, with 

 three teeth behind the orl;»ital angle ; orbits entire. Antennae long, 



cies in these words : " A small crab, f. 3, a and b, which I conceive to be a 

 new species of Planes was found in gi-eat numbers amongst the anatiferse." 

 In a foot-note the species is described as follows : "It was of a delicate, 

 but bright, rose-color ; from the symmetrical form of its test (notched so 

 regularly as to increase the projection and distinctness of its chaperon), it 

 may be called P. clypeafi/s." This can hardly be considered as a sufficient 

 description to establish the genus, and hence I prefer to retain the com- 

 monly accepted name. 



