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Show 1900.] FROM SINGAPORE AND MALACCA. 723 VI. Genus EGERIA Latr. 7. EGERIA ARACHNOIDES Rumph. Cancer arachnoides, Rumph. D'Amboin. Rarit-kammer, pi. viii. f. 4 (1741). Inachus longipes, Fabr. Suppl. p. 358 (1798). Egeria arachnoides, Latr. Encycl. pi. cclxxxi. f. 1 (1825); M.-Edw. Hist. Nat. Crust, t. i. p. 291 (1834); Hasw. Cat. Austr. Crust, p. 11 (1882); Miers, ' Alert' Crust, p. 191 (1884). Egeria longipes, Walker, Journ. Linn. Soc, Zool. vol. xx. p. 109 (1887). Egeria arachnoides, Henderson, Trans. Linn. Soc, Zool. vol. v. p. 343 (1893). Hab. Singapore; 2-4 fms. Muddy bottom. One male, rather damaged, and another larger. Dim. eS 6x7. rf 16x16. VII. Genus MAI A Lam. 8. M A I A MIERSII Walker. Maia miersii, Walker, Journ. Linn. Soc, Zool. vol. xx. p. 113 pi. vi. ff. 1-3 (1887). Hab. Singapore ; 6 fms. Bottom of sandy mud. One female example, entirely agreeing with Mr. Walker's description. The carapace is thickly covered with matted weed, in which are entangled tiny shells, gravel particles, &c, as well as mud, when first caught. Dim. 16-5 x 21-5. VIII. Genus HYASTENUS White. 9. HYASTENUS DIACANTHUS de Haan. Pisa (Naxia) diacantha, de Haan, Crust. Jap. p. 86, pi. xxiv. f. 1 (1839). Hyastenus diacanthus, A. M.-Edw. Nouv. Arch. Mus. t. viii. p. 250 (1872); Hasw. Cat. Austr. Crust, p. 20 (1882); Miers, 'Alert' Crust, p. 194 (1884). Hab. Malacca ; 6 fms. Rough bottom. 3 small females. Dim. $ 5x7-5. $ 4x5-5. $ 2-5x3-5. 9 a. HYASTENUS DIACANTHUS BITUBERCULATUS, var. nov. There are, in addition to the above, three large specimens, in which the gastric prominence, besides being much elevated, bears two pointed tubercles, one in front of the other, the anterior being the more prominent; a small tubercle on the middle of the posterior border. In other respects they resemble H. diacanthus. There are three examples, a male and a female from 15 fms. at Singapore, and another female from 10-15 fms. at Malacca. In the female from Singapore there is a biggish round brown spot on the posterior declivity of the gastric eminence. Dim. 6 15x21. $18-5x25. $12-5x18. |