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

.;188 COLLECTIONS FROM MELANESIA.Caprella (sqm'h'bra (Say). E. Australia (Port Jackson) ; New Zealand;Hong Kong- ; Mediterranean ; Norway ; Britain ; E. coast ofUnited States ; Brazil.* attennata, Dana? E. Australia (Port Jackson); Eio de Janeiro,OsTEACODA.Cypridina alho-macnlata, Baird. N. Australia (Port Darwin, DundasStraits) ; W. Australia (Swan Eiver).CIEEIPEDIA.Balanus trigonus, Darwin. E. Australia (Port Jackson and Sydney) ;New Zealand ; Malaysian seas ; W. coast of America ; PeruColumbia ; California.amaryllis, Darwin. N. to E. Australia (Port Darwin to MoretonBay) ;Philippines ; Malaysian archipelago ; mouth of the Indus.Acasta sulcata, Lam. (var. ?). N. to E. Australia (Albany Island toMoreton Bay) ; S. Australia ; W. Australia {Lajnarck).PYCNOGONIDA.Achelia Icevis, Hodge, var. australiensis, n. E. Australia (Port Jackson).PhoxicJdlidium hoekii, sp. n. N. Australia (Dundas Straits, ThursdayIsland, Prince of Wales Channel)DECAPODA.BEACHYUEA.1. Achseus lacertosus, Stimpson.Here is somewhat doubtfully referred a small male specimen fromPort Jackson (0-5 fms.), which difi'ers from Stimpson's diagnosisonly in the somewhat slenderer merus-joint of the chelipedes, whichresembles that of A. hreviceps, Haswell (a species which Mr. Haswellin his latest work regards as synonymous with A. lacertosas), in beingof a somewhat trigonous form ; the palm or penultimate joint isthin-edged along its upper margin, but scarcely carinatcd.The specimen I refer to A. lacertosus also bears some resemblanceto the European A. cranchii in the absence of a neck-like constrictionbehind the orbits, and in the comparatively short ambulatory legs, thedactyli of the last three pairs being rather strongly falciform. In A.cranchii, however, the eye-peduncles have a tubercle on their anteriormargin, the distal end of the merus of the outer maxillipedes is moredistinctly truncated, and the ambulatory legs are even shorter.In the second collection received from Dr. Coppinger are twofemales from Dundas Strait, North Australia (No. 161), whichscarcely differ, except in the somewhat broader carapace.2. Achseus affinis.Carapace subtriangular and moderately convex, with the surfaceuneven, but the regions not very distinctly defined ; the postorbitalregion is constricted. The rostrum is moderately prominent, the