Report on the zoological collections made in the Indo-Pacific Ocean ...

;210 COLLECTIONS FROM MELANESIA.sures 5 lines (10^ millim.) in length, and about 8k lines (18 millim.)in breadth.In two of these specimens the coloration is reddish brown, withthe verjf short pubescence of a brownish hue ; the three others (103)are much paler, and the pubescence is of a light hue.These specimens agree with Dana's descriptioa and figures intQost particulars, and especially in the very considerable transversewidth of the carapace, very concave postero-lateral margins, andvery short pubescence of the carapace, wherein they differ frommost other species of Acta;a ; the lobes of the an tero- lateral marginsof the carapace are, however, very indistinct and are themselvesinterrupted ; and the areolae of the upper surface appear to be muchmore strongly defined and separated by deeper furrows than inDana's figure*. His specimens were from the Sooloo Sea or BalabacStraits.Actcea consohrina of Alphonse Milne-Edwards f is a closely alliedspecies from Upolu, which, as far as can be learned from the verybrief diagnosis, is only distinguished by the lighter coloration and4-lobed an tero -lateral margins. It may not be distinct fromA. areolata, or, if distinct, perhaps our specimens should be referredto it.41. Banareia inconspicua. (Plate XIX. fig. C.)Carapace transverse, moderately convex, everywhere clothedwith rather short hairs, beneath which the surface is granulatedsimilar hairs cover the upper surface of the legs ; the carapace isnot lobulated, nor ai'e the interregional sutures visible ; the front is4-lobed, the lobes small, rounded, and equidistant. The anterolateralmargins are longer than the postero-lateral, unevenly granulated,with very obscure traces of division into teeth or lobes ; thepostero-lateral margins are strongly concave. The epistoma isalmost linear-transverse ; the anterior margin of the buccal cavityprojects, and is divided by two very distinct fissures. The postabdomenpresents nothing remarkable. The antennuies are obliquelyfolded ; the antennae have a rather stout basal joint, whichreaches to the infero-lateral angle of the front, and a rather lonoflagellum.The ischium-joint of the outer maxillipedes is but littlelonger than the merus, which is nearly quadrate. The chelipedesare nearly smooth and unarmed, without spines or tubercles ; themerus or arm is trigonous, its upper and lower margins fringed withhairs ; the wrist is clothed with hair on its upper and outer surface,the angle on its inner surface prominent, but without a tooth orspine ;palm also hairy above and on the upper part of its outer surface,naked on the lower part, where it is punctulatcd, and granulatedon its lower margin ; fingers nearly as long as the palm, naked(except at the base of the upper margin of the mobile finger or* U.S. Explor. Exped. xiii Crust, i. p. 162, pi. viii. fig. 1 (1862).t Journal Museum Godeffroy, iv. p. 79 (1873).