196 PROCEEDINGS OF THE ACADEMY OF [1880. 



G, criuipes Stimpson ex Dana. 



Grapsus crinipes Dana, Proc. Acad. Nat. Sci, Philadelphia, 1851, p. 



249. U. S. Expl. Exped. Crust., p. 341, PI. XXI, f. 6 (1852). 

 Geograpsus crinipes Stimpson, Proc. Acad. Nat. Sci. Philadelphia, 



1858, p. 101. 

 Grapsus depressus Heller, Verh. Z. B. Gess. Wien, 1862, p. 521. 



Carapax depressed, the sides nearly parallel, folds of the cara- 

 pax oblique, frontal lobes but little prominent, front arcuate. 

 Ischial joint of cheliped spined in front ; meros with the anterior 

 margins expanded, finely serrate proximally, more coarsely so at 

 the apex ; carpus and hand roughened above, a few inconspicuous 

 lines on the lower outer surface of the palm. Distal angle of 

 meros of the last pair of ambulatory feet rounded. 



Sandioich Is. ! (Dr. W. H. JonesJ ; Tahiti (Heller). 



G. grayi A. Milne-Edwards ex H. Milne-Edwards. 



Grapsus grayi Edw., Ann. Sci. Nat., Ill, xx, p. 170, 1853. 

 Geograpsus ruhidus Stimpson, Proc. Acad. Nat. Sci, Philadelphia, 



1858, p. 103. 

 Geograpsus grayi A. M.-Edw., Nouv. Arch, du Mus., ix, p. 288 (1873). 



Carapax somewhat inflated, its folds oblique ; frontal lobes 

 prominent, front nearl}^ straight. Orbit with a slight fissure 

 below ; chelipeds much as in G. ciHnipes. Distal angle of meros 

 of last pair of feet rounded, entire or dentate. 



This is probabl}' the adult of the preceding species. 



Tahiti! (A. Garrett); Australia, Mauritius, Zanzibar (Hilgen- 

 dorf) ; Madagascar, India, Bonin, New Caledonia (A. M.-Edw.). 



G. longipes Kingsley ex A. Milne-Edwards. 



Discoplax longipes A. M.-Edw., Ann. Soc. Ent. France, vii, p. 284 

 (1867). Nouv. Arch, du Mus., ix, p. 294, PI. XV (1873). 



New Caledonia (A. M.-Edw.). 



Genus LEPTOGRAPSTJS M. -Edwards (pars), 1853, Stimpson. 



Carapax with the sides arcuate, two-toothed. Front less than 

 half the width of the carapax, not deflexed. Internal sub-orbital 

 ^ lobe small, antennae entering the orbit. Meros of external max- 



illipeds as broad as long, but shorter than the ischium. 



Leptograpsus variegatus Milne Edwards ex Fabricius. 



Cancer varkgatus Fabr., Ent. Syst., ii, p. 450 (1793). 

 Grapsus marginatus Latr., Hist. Crust, et Ins., vi, p. 71 (1803-4). 

 Grapsus personatus Lamarck, Hist. An. sans Vert., v, 249 (1817). 

 Grapsus jyictus Quoy et Gaimai'd, Voyage Uranie et Physiciene, p. 

 523, PI. LXXVI, f. 2 (1824). 



