General Catalogue of SoutJi African Crustacea. 321 



Sesarma quaduatum (J. C. Fabricius). 

 1798. Cancer quadratus, Fabricius, Suppl. Ent. Syst., p. 341. 

 1843. Sesarma affinis, Krauss, Siidafrik. Crust., p. 45. 



" At Natal Point ; rare." 

 1900. .S'. quadratuvi, Alcock, Journ. Asiat. Soc. Bengal, vol. Ixix., 

 pt. 2, pp. 411, 413, with synonymy and many references. 



Sesarma pictum (de Haan). 



1835. Grapsus [Pachysoma) inctus, de Haan, Crustacea Japonica, 



p. 61, pl. 16, fig. 6. 

 1843. Sesarma picta, Krauss, Siidafrik. Crust., p. 45. 



" It lives in swarms in the mud of Natal Bay, and runs very 

 swiftly." 

 1900. .S'. inctum, Alcock, J. A. S. B., vol. Ixix., pp. 411, 414. 



Sesarma tetragonum (J. C. Fabricius). 



1798. Cancer tetragonus, Fabricius, Suppl. Ent. Syst., p. 341. 



1799. C. fascicularis, Herbst, Krabben und Krebse, vol. iii., pt. 1, 



p. 49, pl. 47, fig. 5. 

 1843. Sesarma tetragona, Krauss, Siidafrik. Crust., p. 44. 



According to Krauss, " The carapace is dark violet, with 

 margins sealing-wax red; the chelipeds are beautifully coloured 

 of the same hue. It is found on the shores of Natal Bay, 

 where it burrows in such places as are not put under water at 

 the springtides. Breadth, 1 inch 6 lines; length, 1 inch 4 lines." 

 Krauss includes in his synonymy only Herbst's species and 

 the Sesarma tetragona of Milne-Edwards, 1837. The latter 

 was distinguished from Cancer tetragonus, Fabricius, by de 

 Man in 1887 under the name Sesarma meinerti. With this 

 Ortmann in 1894 and Doflein in 1904 identify the species 

 found by Krauss in Natal Bay. Alcock in 1900 describes 

 both S. meinerti and S. tetragonum, without giving a refer- 

 ence to Krauss under either name, but identifying Herbst's 

 G. fascicularis with C. tetragonus of Fabricius. 



Sesarma reticulatum. Say. 

 1817. Sesarma reticidata. Say, Trans. Ac. Sci. Philad., vol. i., p. 73, 



pl. 4, fig. 5. 

 1838. S. r., M'=Leay, Annulosa of S. Africa, p. 65. 



M<=Leay identifies his Cape specimen with Grapsiis cineretis. 



