254 BULLETIN 97, UNITED STATES NATIONAL MUSEUM. 



Cancer minutus LINNAEUS, Syst. Nat., ed. 10, vol. 1, 1758, p. 625 (type-local- 

 ity, in Pelagi Fuco natante; type not extant). 

 Cancer pusillus FABRICIUS, Syst. Entom., 1775, p. 402 (type-locality, in 



Oceano boreali; type in Kiel Mus.). 

 Cancer glaberrimus HERBST, Naturg. Krabben u. Krebse, vol. 1, 1790, 



p. 262, pi. 20, fig. 115 (type-locality unknown; type not extant). 

 Pinnotheres minutus Bosc, Hist. Nat. Crust., vol. 1, an X [1801-1802], 



p. 244. 



Pinnotheres pusillus Bosc, Hist. Nat. Crust., vol. 1, an X [1801-1802], p. 244. 

 Pinnotheres glaberimus Bosc, Hist. Nat. Crust., vol. 1, an X [1801-1802], 



p. 244. 

 Grapsus minutus LATBEILLE, Hist. Nat. Crust., vol. 6, an XI [1802-1803], 



p. 68. 

 Grapsus cinereus SAY, Journ. Acad. Nat. Sci. Philadelphia, vol. 1, 1817, 



p. 99. Not G. cinereus Bosc, 1802. 

 Grapsus pelaglcus SAY, Journ. Acad. Nat. Sci. Philadelphia, vol. 1, 1818, 



p. 442 (type-locality, Gulf Stream; type not extant). 

 Planes clypeatus BOWDICH, Excursions in Madeira and Porto Santo, 1825, 



p. 15, pi. 12, figs. 2a and 2b (type-locality, between Lisbon and Madeira, 



on logs; type not extant). 



Grapsus testudinum Roux, Crust. Medit., 1828, p. (52), pi. 6. figs. 1-6 (type- 

 locality, dans le roisinage des cotes de la Sardaigne; type probably not 



extant). 



Grapsus pelagicus Roux, Crust. Medit., 1828, p. (55), pi. 6, figs. 7-9. 

 Grapsus (Grapsus) pusillus DE HAAN, Fauna Japon., Crust., 1835, p. 59, 



pi. 16, fig. 2 (type-locality, Japan; type no longer in Leyden Mus.). 

 Nautilograpsus minutus MILNE EDWARDS, Hist. Nat. Crust., 1837, vol. 2, 



p. 90. 



Grapsus diris COSTA, Fauna Napoli, Crust., 1838, pi. 4, fig. 1 (and corre- 

 sponding text) (type-locality, Gaeta ; type probably not extant). 

 Nautilograpsus major MCLEAY, in Andrew Smith's Zool. South Africa, 



Annul., 1838, p. 66 (type-locality, South Africa; type probably not 



extant). 

 Nautilograpsus smithii MCLEAY, in Andrew Smith's Zool. South Africa, 



Annul., 1838, p. 67 (type-locality, South Africa; type probably not 



extant). 



Planes minutus WHITE, List Crust. Brit. Mus., 1847, p. 42. 

 Planes linnaeana BELL, Brit. Stalk-eyed Crust., 1851, p. 135 (type-locality, 



Devon and Cornwall; type in Brit Mus.). 

 Planes cyaneus DANA, Proc. Acad. Nat. Sci. Philadelphia, vol. 5, 1851 



(1852), p. 250 (type-locality, in mari Pacifico, lat. bor. 2S, long, orient. 



nit / type not extant). 

 Nautilograpsus angustatus STIMPSON, Proc. Acad. Nat. Sci. Philadelphia, 



vol. 10, 1858, p. 103 [49], (type-locality, in mari Pacifico, lat. bor. .?//", 



long. ore. J55 ; type not extant). 

 Planes minutus VERRILL, Trans. Connecticut Acad. Arts and Sci., vol. 13, 



1908, p. 325, text-fig. 7, pi. 13, figs, a-}' ; pi. 27, fig. 6. 



Diagnosis. Carapace uniformly convex; postero-lateral margins 

 arcuate. 



Description. The carapace varies from a little longer than broad 



