1880,] NATURAL SCIENCES OF PHILADELPHIA. 205 



carapax. Meros of external maxillipeds broader than long, 

 shorter than the ischium and with its external distal angle 

 strongly produced. 



Synopsis of Species. 



Hands inflated without elevated lines. 



Fingers with many long hairs, carapax inflated. setosus. 



Hairs on the hand between the bases of the fingers short, 

 carapax flat. albus. 



Hands with an elevated line on the lower outer surface, fingers 



without hairs. craisus. 



P. setosus. 



Cancer barbatus Rumph., PI. X, No. 2 (1705). 



Cancer setosus Fabricius, Suppl, Ent, Syst., p. 339 (1798). 



Grapsus penicilliger Latr., Reg. An, (I Edit.), iii, p. 16, PL XII, f. 1 



(1817). 



Eriocheir? penicilliger De Haan, Fauna Japonica, Crust,, p. 31 (1835), 



Pseudograpsus penicilliger Edw., Hist. Crust., ii, p. 83 (1837). 



Pseudogrupsus barbatus Edw., Ann, Sci. Nat., Ill, xx, p. 191 (1853). 



Eastern Seas (Auct). 

 P. albus Stimpson. 



Pseudograpsus albus Stimpson, Proc. Acad. Nat, Sci., Phila., 1858, 



p. 104, 



Japan (Stimpson) ; New Caledonia (A, M,-Edwards), 



P. crassus A, Milne-Edwards. 



Pseudograpsus crassus A, M.-Edw., Nouv. Arch, du Mus., iv, p. 176, 

 PI, XXVI, f. 6-10 (1868), 



Celebes (A. M,-Edw), 



Genus VARUNA Edwards, 1830 {Trichopus De Haan, 1835). 



Carapax depressed, sides arcuate, two-toothed. Antennulae 

 oblique. Antennae entering the orbit ; external maxillipeds 

 slightly gaping. Meros much shorter than the ischium, its ex- 

 ternal distal angle expanded. Palpus articulating with the middle 

 of the anterior margin. Exognath half as wide as ischium. 

 Ambulatory feet compressed, natatorial, 



V. litterata Milne-Edwards ex Fabricius. 



Cancer litterata Fabr., Suppl. Ent. Syst., p. 342 (1798). 

 Trichopus litterata De Haan, Fauna Japonica, Crust., p. 32 (1835). 

 Vai-una litterata Edw,, Diet. Class. d'Hist. Nat., xvi, p. 511 (1830). 

 Hist, Nat, Crust., ii, p, 95 (1837), 



Carapax smooth, cardiac region partly circumscribed. Front 

 straight, orbits fissured above, lateral teeth sepai-ated bj' slight 

 fissures. Posterior margin of meros of chelipeds acute, the 



