REPORT ON THE BRACHYURA. 
257 
Leptograpsus, Milne Edwards. 
Leptograpsus, Milne Edwards (pt.), Ann. d. Sci. Nat., ser. 3, Zool., vol. xx. p. 171, 1853. 
„ Stimpson, Proc. Acad. Nat. Sci. Philad., p. 101, 1858. 
„ Kingsley, Proc. Acad. Nat. Sci. Pliilad., p. 196, 1880. 
This genus, as restricted by Stimpson and Mr. Kingsley, is very nearly allied to 
Grapsus, but distinguished as follows : — The front is nearly horizontal, but very slightly 
deflexed, and the postfrontal or protogastric lobes of the carapace are but very 
obscurely developed. There are two teeth behind the exterior orbital tooth on the 
lateral margins, which are arcuated as in Grapsus. The basal antennal joint is broader, 
and the lobe at the antero-external angle fully reaches the apex of the interior subocular 
lobe of the orbit, which is shorter than in Grapsus; the exterior maxillipedes (the 
merus-joints of the endognaths especially) are broader than in that genus. 
I doubt the advisability of regarding Leptograpsus as a distinct genus ; as restricted 
above, it will contain only the following species : — 
Leptograpsus variegatus (Fabricius). Australian Coasts ; Norfolk Island ; New 
Zealand ; Marianne Islands ; Shanghai ; Chili ; St. Ambrose Islands ; Juan 
Fernandez ; Pernambuco ; and perhaps the Canary Islands (Milne Edwards, 
as Leptograpsus bertheloti). 1 
Leptograpsus variegatus (Fabricius). 
Cancer variegatus, Fabricius, Entom. Syst. Suppl., vol. 2, p. 450, 1793. 
Grapsus variegatus, Latreille, Hist. Nat. Crust, et Ins., vol. vi. p. 71, 1803-1804. 
„ ,, Guerin, Icon, du Regne Animal, Crust., pi. vi. fig. 1. 
„ „ Milne Edwards, Hist. Nat. Crust., vol. ii. p. 87, 1837. 
Leptograpsus variegatus, Milne Edwards, Ann. d. Sci. Nat., tom. cit., p. 171, 1853. 
„ „ Kingsley, Proc. Acad. Nat. Sci. Pliilad., p. 196, 1880, et synonyrna (?). 
Valparaiso, on the shore (an adult female). 
Adult ?. 
Lines. 
Millims. 
Length of carapace, 
. 
r-fn 
o 
r—i 
41 
Breadth of carapace, 
22 
46-5 
Metopograpsus, Milne Edwards. 
Metopograpsus, Milne Edwards (§ 1), Ann. d. Sci. Nat., ser. 3, Zool., vol. xx. p. 164, 1853. 
,, Kingsley, Proc. Acad. Nat. Sci. Philad., p. 190, 1880. 
Carapace depressed, subtrapezoidal, broader than long, with the antero-lateral margins 
straight or nearly straight, entire or unidentated, and slightly convergent to the posterior 
1 Grapsus inornatus, Hess, from Sydney, may belong to this genus, but, on account of the long curved dactyli, I 
think it more probably belongs to Cyrtograpsus or Pseudograpsus. 
(ZOOL. CHALL. ESP. rART XLIS. — 1886.) 
Ccc 33 
