512 
MU. H. N. RIDLEY ON TIIE 
1865. Lopliactfea lobata, A. Milne- Edwards, Nouv. Arch. Mus. Hist. 
Nat. i. p. 219, pi. xvi. fig. 3. 
A single male specimen. This is a West-Indian and Mexican 
species. 
GRAPSOIDEA. 
Family Octpodida 
Genus Ocypoda, Fabricius. 
1798. Ocypoda, Fabricius (pt.), Ent. Syst. Suppl. p. 347. 
1837- Ocypoda, Milne-Edwards, Hist. Nat. Crust, vol. ii. p. 41. 
1880. Ocypoda, Kingsley, Proc. Acad. Nat. Sci. Philad. p. 179. 
1886. Ocypoda, Miers, Brachyura of H.M.S. ‘ Challenger ,’ p. 237. 
Ocypoda arenaria ( Catesby ). 
1771. Cancer arenarius, Catesby, Hist, of the Carolinas, ii. p. 35, 
pi. XXXV. 
1880. Ocypoda arenarius, Kingsley, Proc. Acad. Nat. Sci. Philad. 
p. 184. 
1882. Ocypoda arenarius, Miers, Ann. Mag. Nat. Hist. ser. 5, x. p. 384, 
pi. xvii. fig. 7. 
Five adult specimens (four males and one female). 
[Common in holes in the sand at Sueste Bay and Sambaqui- 
chaba. — H. JN. 2?.] 
Family Geapsidi. 
Genus Grapstts, Lamarck. 
1818. Grapsus, Lamarck (pt.), Hist. Nat. Anim. sans Vert. v. p. 247. 
1880. Grapsus, Kingsley, Proc. Acad. Nat. Sci. Philad. p. 192. 
1886. Grapsus, Miers, Brachyura of H.M.S. ‘ Challenger ,’ p. 254. 
Grapsus maculatus {Catesby). 
1771- Pagurus maculatus, Catesby, Nat. Hist. Carolinas, ii. p. 36, 
pi. xxxvi. fig. 1 . 
1880. Grapsus maculatus, Kingsley, Proc. Acad. Nat. Sci. Philad. 
p. 192. 
This species has a very wide range, occurring upon the coasts 
of the warmer temperate and tropical parts of the Indian, Pacific, 
and Atlantic Oceans. It is exceedingly variable, and the extent 
of variation is well shown by the specimens brought from Fer- 
nando Noronha. 
Five immature and two adult males were obtained ; the former 
