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Show 760 MR. W. F. LANCHESTER ON CRUSTACEANS [June 19, the latter with ova : two of the males, however, only represented by exuvia. The tubercle on the inner margin of the thumb is, in these, rather more flattened than in tbe type (v. de Man, t. c), leaving a larger interspace between itself and the finger. Dim. d 17x9-5. d 17x9-25. d 15-25x9. d 12-5x7-5. $ 14-5x8-5. $ 15x8-5. $ 12x6-5. 90. MACROPHTHALMUS PODOPHTHALMUS Eydoux & Souleyet. Macrophthalmus podophthalmus, Eyd. & Souleyet, Voy. 'Bonite, Zool. Crust, vol. i. pi. iii. f. 6 (1841) ; M.-Edw. Ann. Sci. Nat. ser. 3, Zool. t xviii. p. 155 (1852); Hasw. Cat. Austr. Crust, p. 88 (1882); Miers, ' Challenger' Brachyura, p. 249 (1886). Hab. Singapore ; littoral. A male. In this specimen the eye-peduncles do not project by much more than a quarter of their length. Dim. 14x8-5. Length of eyes 8*25. Length of projecting portion of eyes 2-5. 91. MACROPHTHALMUS JAPONICUS de Haan. Ocypode (Macrophthalmus) japonica, de Haan, Crust. Japon. p. 54, pi. vii. f. 1, & pi. xv. f. 2 (1839). Macrophthalmus japonicus, Ad. & White, ' Samarang' Crust. p. 51 (1848); M.-Edw. Ann. Sci. Nat. ser. 3, Zool. t. xviii. p. 158 (1852). Hab. Singapore ; littoral. A female with ova. Dim. 10-5x8. LII. Genus SCOPIMERA de Haan. 92. SCOPIMERA MYCTIROIDES M.-Edw. (Plate XLVII. fig. 14.) Doto myctiroides, M.-Edw. Ann. Sci. Nat. ser. 3, Zool. t. xviii. p. 152, pi. iv. f. 24 (1852). Dotilla myctiroides, Walker, Journ. Linn. Soc, Zool. vol. xx. p. Ill (1887). Scopimera myctiroides, Henderson, Trans. Linn. Soc, Zool. vol. v. p. 390 (1893). Hab. Singapore In great numbers ou the sand between tide-marks, burrowing in holes. Out of 81 specimens, 1 find 7 females, one bearing ova. I think it lias hitherto escaped notice that the shape of the female abdomen is almost exactly similar to that of the male. Prof. Henderson (torn, cit.) states that out of a very large series he had only met with males. But on examining a bottle in the Museum collection, labelled " Sc. myctiroides, Rameswaram, J. R. Henderson, 92.7.15," I find, out of about 30 examples, at least as many females as males. The female abdomen, however, may still be distinguished externally from that of the male by a generally broader aspect. Taking measurements from the base of the 5th segment to the tip of the |
