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Show 1884.] CRUSTACEANS FROM MAURITIUS. II which in the specimen received from M. Robillard is of a bright rose-pink, the dorsal surface of the carapace covered with numerous rather large white spots, which are smaller near to the front and antero-lateral margins ; the chelipedes are slenderer (a character probably due to the sex of the specimen). Milne-Edwards describes the coloration as whitish, but it is probable that his specimen was bleached. The correct generic position of A. pubescens is doubtful ; in external appearance (i. e. in the very widely transverse granulated carapace) it has altogether the fades of a species of Carpilod.es, but the basal antennal joint does not, as in that genus, enter the inner orbital hiatus. It cannot, in the classification proposed by Prof. Dana (the only complete system since that of H. Milne-Edwards), be retained in Liomera, since the fingers of the chelipedes are strongly excavated. I place it therefore in the genus Actaiodes, to which it belongs in essential generic characters. This species has been hitherto a desideratum in the Museum collection. CHLORODIUS NIGER. Cancer niger, Forskal, Descript. Animalium, p. 89 (1775). Chforodius niger, Riippell, Beschreib. 24 kurzschwanzigen Krabben des Rothen Meeres, p. 20, pi. iv. fig. 7 (1830) ; M.-Edwards, Hist. nat. des Crust, i. p. 401 (1834); A. Milne-Edwards, Nouvelles Archives du Muse'um d'hist. naturelle, ix. p. 214 (1873), and ref. to synonyma. Chlorodius rufescens, Targioni-Tozetti, Zoologia del viaggio della R. piro corvetta ' Magenta,' Crostacei, p. 43, pi. iv. figs. 6-8, 10-12, 14, 18 (1877), var. An adult male of large size of this common and widely distributed Oriental species is in the collection. The characters mentioned by Targioni-Tozetti as distinctive of his C. rufescens are, I think, not of specific importance. I have examined specimens in which the posterior lateral marginal tooth only is spiniform, and the other teeth of the lateral series are rounded and obtuse. TRAPEZIA FLAVOPUNCTATA. Trapezia flavopunctata, Eydoux and Souleyet, Voyage de la * Bonite,' Zoologie, Crustaces, p. 230, pi. ii. fig. 3 (1841). An adult male and female of large size are in the collection. They agree with the description and figure cited in nearly every particular, except in having no distinct carina on the outer margin of the merus of the chelipedes ; the red areolations of the carapace and limbs (defining the yellow spots) are even larger than in the figure of M M . Eydoux and Souleyet. This species is apparently well distinguished from Trapezia areolata, Dana1, by the extension of the areolae of the body over the ambulatory 1 U.S. Exploring Expedition, xiii., Crustacea, p. 250, pi. xv. fig. 8 (1S52). |