ZOOLOGY OF FERNANDO NOKONHA. 513 



are of a dark green colour with feeble indications of maculae^ tlie 

 latter red-brown with maculae well developed. [Very common on 

 tbe rocks all over the group, running briskly just above water- 

 mark and leaping from stone to stone. — H. N. ^.] 



Genus Plagusia, Latreille. 



1806. Plagusia, Latreille (pt.), Gen. Crust. Ins. i. p. 33. 

 1837. Plagusia, Milne-Edwards, Hist. Nat. Crust, ii. p. 90, 

 18/8. Plagusia, Miers, Ann. Mag. Nat. Hist. ser. 5, i. p. 148. 

 1886. Plagusia, Miers, Brachyura of H.M.S. ' Challenger,' p. 271. 



Plagusia depeessa {Fahridus). 

 1775. Cancer depressus, Fahricius, Syst. Ent. p. 406. 

 1782. Cancer squamosus, Herbst, Naturg. der Krabben, i. p. 260, pi. xx. 

 fig. 113. 



1878. Plagusia depressa, Miers, Ann. Mag. Nat. Hist, ser. 5, i. p. 149. 



[This ran about on the atones and rocks like the Grapsus. — 



Genus Leiolophus, Miers. 



1850. Acanthopus, deHaan, Faun. Japon., Crust., p. 29 (nom. prajocc). 



1876. Leiolophus, Miers, Cat. New-Zeal. Crust, p. 46. 



1878. Leiolophus, Miers, Ann. Mag. Nat. Hist. ser. 6, i. p. 153. 



Leiolophus planissimus {Herhst). 



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 funu 

 was taken. 



PORCELLANIDEA. 



Family Porcellanid^. 

 Genus Petrolisthes, Stimpson. 

 1869. Petrolisthes, Stimpson, Proc. Acad. Nat. Sci. Philad. x. p. 227. 



PETifOLISTHES MAfiGINATUS, StimpSOn. 



1862. Petrolisthes marginatus, Stimpson, Ann. Lye. Nat. Hist. New 

 York, vii. p. 74. 



I have had no opportunity of examining specimens of F. mar- 

 fjinatus (Stimpson), and consequently not being certain of the 



