OCR Text |
Show 12 MR. E. J. MIERS ON [Jan. 15, legs, and by having a series of granules or small tubercles on the inferior margin of the palm of the chelipedes. It has been hitherto a desideratum in the Museum collection. The types of M M . Eydoux and Souleyet were obtained at the Sandwich Islands : hence" it is evidently a widely-distributed Oriental species. The largest specimen (the female) presents the following dimensions:- lines, millim. Length of carapace 10 21 Breadth of carapace 11*§ 24*5 Length of larger chelipede, nearly 22 46 I believe the Trapezia latifrons, A. Milne-Edwards1, from the Sandwich Islands and N e w Caledonia, to be very probably a younger condition of this species. The carapace, however, is represented as broader and more triangulate in shape, the frontal lobes as less prominent, the lateral marginal teeth of the carapace as more acute, and the areolae of its dorsal surface yet larger and less numerous. 1 therefore hesitate to quote it as synonymous with T. flavopunctata. LlSSOCARCINUS ORBICULARIS. Lissocarcinus orbicularis, Dana, Proc. Acad. Nat. Sci. Philadelphia, p. 86 (1852); Crustacea in U.S. Exploring Expedition, xiii. (1) p. 288, pi. xviii. fig. 1 (1852) ; A. Milne-Edwards, Archives du Museum d'hist. naturelle, x. p. 418 (1861). A small male is in the collection, which in coloration and all other particulars nearly agrees with Dana's description and figure, based on a specimen from the Fijis. XENOPHTHALMODES MOSBII. Xenophthalmodes mcebii, Blchters, Decapodain Mobius's Beitrage zur Meeresfauna der Insel Mauritius, p. 155, pi. xvi. fig. 29, and pi. vii. figs. 1-9 (1880). Two females are in the collection. This form has been hitherto a desideratum in the collection of the British Museum. I believe its true generic position to be in the family Bhizopida? in the vicinity of Rhizopa and Typhlocarcinus, Stimpson2; and perhaps it may not be genetically distinct from one or the other of the above-mentioned genera, a point which, in the absence of males for comparison, I will not undertake to determine. In external aspect it altogether resembles Typhlocarcinus ; it is distinguished, however, from all the species both of Typhlocarcinus and Rhizopa with which I am acquainted by the entire antero-lateral margins of the carapace. It has apparently no very near affinities with Xenophthalmus, White, with which Dr. Richters compares it; although 1 Annales de la Societe Entomologique de Paris, vii. p. 281 (1867); Nouvelles Archives du Museum, ix. p. 259, pi. x. fig. 7 (1873). 2 Proc. Acad. Nat, Sci. Philadelphia, pp. 96, 97 (1858). |