254 BULLETIN 97, UNITED SIATES NATIONAL MUSEUM. 



Cancer minnUis Linnaeus, Syst. Nat., ed. 10, vol. 1, 1758, p. G25 (type-local- 

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

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



Occano horeali; type in Kiel Mus.). 

 Cancer glabcrrimns Hkrbst, Naturg. Krabben u. Krebse, vol. 1, 1790, 



p. 2G2, 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 pusillns Bosc, Hist. Nat. Crust., vol. 1, an X [1801-1802], p. 244. 

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



p. 244. 

 Orapsus niinutns Latkkille, Hist. Nat. Crust., vol. 6, an XI [1802-1803], 



p. 68. 

 Hrapsus cincreus Say, Journ. Acad. Nat. Sci. Philadelphia, vol. 1, 1817, 



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

 Grapsus pelagicus 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. 2« and 2b (type-locality, between Lisbon and ^Madeira, 



on logs ; type not extant ) . 

 Grapsus icstndinnin 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 Edwaeds, Hist. Nat. Crust., 1837, vol. 2, 



p. 90. 

 Grapsus dirts 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 Airica, 



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



extant). 

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

 Planes linnacana 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 Pacifleo, lat. bor. 28°, long, orient. 



n^° ; type not extant). 

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



vol. 10, 1858, p. 103 [49], (type-locality, in mari Pacifico, lot. bor. S.'i°, 



long. one. 155° ; type not extant). 

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



1908. p. 325, text-fig. 7, pi. 13, tigs, a^j' ; pi. 27, fig. 6. 

 Diagnosis. — Carapace uniformly convex; postero-lateral margins 

 arcuate. 



Description. — The carapace varies from a little longer than broad 



