1900.] FROM SINGAPORE AND MALACCA. 755 



S 13-5x8. <J 12-5x7-5. 211x6-75. $12-5x8. $11-5x6-5. 

 $10-5x6-25. $10-5x6. 



XL VII. Genus Grapsus Lam. 



79. Grapsus strigosus Herbst. 



Cancer strigosus, Herbst, Naturgesch. d. Krab. iii. p. 55, pi. xlvii. 

 f. 7 (1799). 



Grapsus {Goniopsis) strigosus, de Haan, Crust. Japon. p. 33 

 (1839). 



Grapsus strigosus, A. M.-Edw. Nouv. Arch. Mus. t. ix. p. 286 

 (1873); Hasw. Cat. Austr. Crust, p. 97 (1882); Walker, Journ. 

 Linn. Soc, Zool. vol. xx. p. 110 (1887) ; Henderson, Trans. Linn. 

 Soc, Zool. vol. v. p. 390 (1893). 



Hah. Singapore ; rocks along the shore. Two males and a 

 female. 



General colour of carapace and legs a light yellow with maroon 

 markings, the latter having a somewhat liuear arrangement on the 

 sides of the carapace. 



Dim. 6 52 x 49-5. S 38-5 x 36. $ 47-5 x 43. 



XLVIII. Genus Metopograpsus M.-Edw. 



80. Metopograpsus oceanicus Jacq. & Lucas. 



Grapsus oceanicus, Jacq. et Lucas, Voyage an Pole du Sud, 

 Crust, p. 73, pi. vi. f. 9 (Hombron et Jacq. tome iii. 1853). 



Metopograpsus quadridentatus, Stimpson, Proc. Ac. Nat. Sci. 

 Philad. p. 102 (1858). 



Metopograpsus oceanicus, Kingsley, Proc. Ac. Nat. Sci. Philad. 

 p. 191 (1880). 



? Pachyqrapsus transversus, Gibbes, et syn. vide Kingsley, t. c. 

 p. 199 ; Walker, Journ. Linn. Soc, Zool. vol. xx. p. 110 (1887). 



Hab. Singapore : from rocks or piles of landing-stages. Twelve 

 males and sixteen females, five having ova. Carapace generally 

 has a mottled appearance of green and purple ; but the colour of 

 these crabs is exceedingly variable. 



I have also from Malacca six specimens, three male and three 

 female, of a form which seems to be identical with Pachygrapsus 

 transversus Gibbes ; the internal subocular lobe being reduced 

 so that the antennae just enter the orbit. They also agree with 

 descriptions given of that species. But, excepting that the antennas 

 are more in contact with the orbit, these individuals agree so entirely 

 with those of Metopograpsus oceanicus, that I am inclined to agree 

 with Mr. Walker (t. c. p. 113) that P. transversus is a variety of a 

 Metopograpsus — but of M. oceanicus- not M. measor, as he suggests, 

 seeing that this latter species has no teeth on the antero-lateral 

 margin. 



Dim. 6 28-5 x 24. 6 28-5 x 23-5. J 27 X 22-5. rf 25-25 x 22. 

 cJ 24x20-5. S 22-25x19. $34x28. $33-5x27. $29x24. 

 $26x21-5. $27x22-5. $24x19. 



