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Show 1900.] FROM SINGAPORE AND MALACCA. 755 d 13-5x8. d 12-5x7-5. $11x6-75. $12-5x8. $11-5x6-5. $10-5x6-25. $10-5x6. XLVII. 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). Hab. 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 linear arrangement on the sides of the carapace. Dim. d 52 x 49-5. d 38-5 x 36. $ 47-5 x 43. XLVIII. Genus METOPOGRAPSUS M.-Edw. 80. METOPOGRAPSUS OCEANICUS Jacq. & Lucas. Grapsus oceanicus, Jacq. et Lucas, Voyage au Pole du Sud, Crust, p. 73, pi. vi. f. 9 (Hombron et Jacq. tome iii. 1853). Metopograpsus quadridentatus, Stimpson, Proc. A c Nat. Sci. Philad. p. 102 (1858). Metopograpsus oceanicus, Kingsley, Proc. Ac. Nat. Sci. Philad. p. 191 (1880). ? Pachygrapsus 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 antennas just enter the orbit. They also agree with descriptions given of that species. But, excepting that the antennas are more iu 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. messor, as he suggests, seeing that this latter species has no teeth on the antero-lateral margin. Dim. d 28-5 x 24. d 28-5x23-5. d 27x22-5. d 25-25x22. d 24 x 20-5. d 22-25 x 19. $ 34 x 28. $ 33-5 x 27. $ 29 x 24. $26x21-5. $27x22-5. $24x19. |