212 PROCEEDINGS OF THE ACADEMY OF [1880. 



M, granulans^ Heller. 



Metasesarma granularis Heller, Verb. Z. B. Ges. "Wien, 1863, p. 523. 



Metasesarma rugulosa Heller, Novara Crust., p. 65 (1865). 



TaUU (Heller). 

 M. trapezium Stimpson ex Dana. 



Sesarma trapeziu7n Dana, U. S. Expl. Exped. p. 354, PI. XXII, f. 8 



(1852). 



Metasesarma trapezium Stimpsou, Proc. Acad. Nat. Sci. Pbila., 1861, 



p. 373. 



Sandioich Is. (Dana). 



Genus SARMATIXJM Dana, 1851 {Metagrapsua Edw., 1853). 



Carapax convex, sides arcuate, entire or toothed. Front in- 

 clined, less than half the width of the carapax. External maxilli- 

 peds nearly as in Sesarma. Ambulatory feet with the margins 

 entire. 



Synopsis of Species. 



Sides of carapax with two teeth behind the orbital angle. 

 Hands externally smooth and rounded. 



Carapax smooth, band transversely plicate above. crassum. 



Carapax areolate, hand smooth above. curvatum. 



Hands externally roughened. 



Hands externally bearing a pectinate crest. pectinatum. 



Hands without a prominent external crest. 



Hands with an internal granulate ridge. punctatum. 



Hands entire within. indicum. 



Sides of carapax entire. integrum, 



S. crassum Dana. 



Sarmatium crassum Dana, Proc. Acad. Nat. Sci. Phila., 1851, p. 

 U. S. Expl. Exped., Crust., p. 358, PI. XXIII, f. 1 (1852). 



Samoan Is. (Dana). 

 S. curvatum Kingsley ex Milne-Edwards. 



Sesarma curvata Edw., Hist. Crust., ii, p. 75 (1837). 



Metagrapsus curvatus M.-Edw., Ann. Sci. Nat. Ill, xx, p. 189 (1853). 



Arch, du Mus., vii, p. IGO, PI. X, f. 3, 1854. 



Senegal (Edw.). 



S. pectinatum Kingsley ex Milne-Edwards. 



Metagrapsus pectinatus Edw., Ann. Sci. Nat. Ill, xx, p. 189 (1853). 



Martinique (Edw.). 

 S. punctatum Kingsley ex A. Milne-Edwards. 



Metagrapsus punctatus A. M.-Edw., Nouv. Arch, du Mus., ix, p. 308, 



PI. XVII, f. 2 (1873). 



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



' I have here as in other places employed the earlier name ; what reason 

 Dr. Heller had for the change I cannot imagine. 



