550 mb. w. f. lauciiester on tiie [Dec. 3, 



XXV. Genus Metopograpsus M.-Edw. 



43. Metopograpscs maculatus M.-Edw. 



Metopograpnu maculatus, M.-Edw. Ann. Sci. Xat. (3) xx. p. 165 

 (1853) ; de Man, Mergui Crust, p. 145, pi. x. tigs. 1-3 (168S). 



Loc. Singora. 



A single male, which accords in all points with Dr. de Man's 

 description. 



Dim. 27x22. 



"Width of front 18 mm. 



XXVI. Genus Sesarma Say. 



44. Sesarma (Sesarma) lafondii Jacq. et Lucas. 



Sesarma lafondii, Jacq. et Luc. Voy. Pole Sud, Crust, p. 70, 

 pi. vi. tig. 4 (Hombron et Jacq. t. hi.) (1853) ; de Man, Zool. Jahrb. 

 Syst. ii. p. 639 (1887). 



Loc. Singora. 



A female. 



Dim. 28x25. 



45. Sesarma (Parasesarma) quadhata Eabr. 



Cancer quadratus, Fabr. Ent. Syst., Suppl. p. 341 (1798). 



Sesarma aspera, de Man, Mergui Crust, p. 169 (1888). 



Sesarma quadrata, id. Weber's Zool. Erg. v. 2, p. 328 (1892J; 

 id. Zool. Jahrb. Syst. ix. p. 182 (1897). 



Loc. Trengganu. 



One male and two females. 



The pectinated ridges are less developed in the females, and 

 without black tips to the teeth. In the larger female, of which 

 only the right chelipede is present, tlie tubercles on the finger are 

 rather worn, and seem, in consequence, a little more confluent than 

 usual ; they are 11-12 in number, the first two at the base of the 

 finger being very small. The carapace, moreover, in this individual 

 has a generally smoother aspect than in the other two, due to the 

 relative scantiness of the small hairs, notably on the fore part of 

 the carapace. 



(N.B. — In regard to the wearing of the tubercles in the female, 

 compare de Man, Zool. Jahrb. ix. p. 183.) 



Dim. s 16x12. 2 16x13. 2 15x11. 



46. Sesarma (Geosesarma) maculata de Man. 



Sesarma maculata, de Man, Weber's Zool. Erg. v. 2, p. 347, 

 pi. xxi. fig. 19 (1892). 



Loc. Lacom. 



Four males and two females, one of the latter with ova. I have 

 little to add to Dr. de Man's very complete description. One of 

 the larger males only shows ten sharp tubercles on the upper 



