ZOOLOGY OF FERNANDO NOEONHA. 
513 
are of a dark green colour with feeble indications of maculae, the 
latter red-brown with macula? well developed. [Very common on 
the rocks all over the group, running briskly just above water- 
mark and leaping from stone to stone. — H. N. B.~] 
G-enus Pdagtjsia, Latreille. 
1806. Plagusia, Latreille, (pt.), Gen. Crust. Ins. i. p. 33. 
1837. Plagusia, Milne-Edwards, Hist. Nat. Crust, ii. p. 90. 
1878. Plagusia, Miers, Ann. Mag. Nat. Hist. ser. 5, i. p. 148. 
1886. Plagusia, Miers, Brachyura of H.M.S. ‘ Challenger ,’ p. 271. 
Plagusia depressa ( Fahricius ). 
1 775. Cancer (lepressus, Fahricius, Syst. Ent. p. 406. 
1782. Cancer squamosus, Herbst, Naturg. der Krabben,\. p. 260, pi. xx. 
fig. 113. ^ 
1878. Plagusia depressa, Miers, Ann. Mag. Nat. Hist. ser. 5, i. p. 149. 
[This ran about on the stones and rocks like the Grapsus . — 
H. N. B.) 
Genus Leiolophus, Miers. 
1850. Acanthopus, deHaan, Faun. Japan., Crust., p. 29 (nom. prseocc.). 
1876. Leiolophus, Miers, Cat. New-Zeal. Crust, p. 46. 
1878. Leiolophus, Miers, Ann. Mag. Nat. Hist. ser. 5, i. p. 153. 
Leiolophus planissimus {Herbst). 
1804. Cancer planissimus, Herbst, Naturg. der Krabben, iii. Heft 4, 
p. 3, pi. lix. fig. 3. 
1878. Leiolophus planissimus, Miers, Ann. Mag. Nat. Hist. ser. 5, i. 
p. 153. 
A single specimen (female with ova) of this wide-spread form 
was taken. 
PORCELLANTDEA. 
Family Porcellanid2e. 
Genus Peteolisthes, Stimpson. 
1859. Petrolisthes, Stimpson, Proc. Acad. Nat. Sci. Philad. x. p. 227. 
Peteolisthes marginatus, Stimpson. 
1862. Petrolisthes marginatus, Stimpson, Ann. Lyc. Nat. Hist. Ntw 
York, vii. p. 74. 
1 have had no opportunity of examining specimens of P. mar- 
ginatus (Stimpson), and consequently not being certain of the 
