190 PROCEEDINGS OF THE ACADEMY OP [1880, 



1. G. cruentatus De Hann ex Latreille. 



Cancer rvricola De Geer. Memoirs pour sei-vir a I'Hist. Insectes, vii, 



417, PL XXV, 1778 (non Linne). 

 Orapsxis criientattts Latreille. Histcrire Naturelle des Crust, et Ins., 



vi, p. 70 (1803-4). 

 Goniopsis cruentatus I>e Haan. Fauna .Japonica Crust., p. 33 (1835). 

 Grapsus longipes Randall. Jour. Pliila. Acad., viii, p. 125 (1839). 

 Goniopsis ruricola White. List Brit. Mus. Crust., p. 40 (1847). 

 'Grajysus pelU Herklots. Additamenta ad Faunam Carcinologicam 



AfricjB Occidentalis, 8, PI. I, f. 6-7 (1851). 

 'Goniograpsus cruentatus Dana. U. S. Expl. Exped. Crust., p. 342, 



PL XXI, f. 7 (1852). 



Front granulate, supra-frontal lobes four, margins crenulate, 

 oi'bits entire above, distally emarginate. Carapax with oblique 

 transverse ridges. Anterior margin of nieros of chelipeds ex- 

 panded, dentate, the upper and lower margins with spiniform 

 tubercles, as is also the upper margin of carpus. Hands with 

 spiniform tubercles above and below, the middle of the outer sur- 

 face smooth, the inner surface with scattered prominent granules. 

 Thumb and finger sub-excavate, the latter spinose above. Ambu- 

 latory feet compressed and armed with still' black bristles. Pos- 

 terior angle of meros of last pair rounded, in the other feet 

 dentate. 



Floridti.! (H. E. Webster, in Union College Museum) ; Bahamas! 

 Cuba! (H.F.Baker); Surmam! (Dr. Hering, Randall's type of 

 G. longipes) ; Gaboon, W. Africa (Du Chaillu) ; West Coast of 

 Nicaragtia! (J. A. McNiel, in Museum of Peabody Academy); 

 Tropical Seas of America (Auct, ), 



Genus METOPOGRAPSUS M.-Edw., 1858. 



Front more than half the width of carapax, deflexed. Sides 

 straight. Internal suborbital lobe very broad, reaching the front 

 and excluding the antenna from the orbit. Meros of external 

 maxilliped short, much broader than long. 



Key to Species. 

 Antero-lateral margin entire. 



Frontal margin sinuate. messor. 



Frontal margin straight. latifrons. 



Antero-lateral margin toothed. oceanicus. 



M. messor Edwards ex ForskaL 



Cancer messor ForskaL Descr. An. in Itin. Observ., p. 88 (1775). 

 Grapsus gaimardii Andouin, Expl. PL Savigny (teste Edw.). 

 Grctpsus messor ^Avf ■ Hist. Nat;" Crust., ii, p. 88 (1837). 



