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

distinguishedEXPLAN.VrrON OF THE PLATES. 681Fig. C. Frontal region of Gonodacit/lus (G elegans, cJ?), showingthe form of the rostrum, x 3.I). Part of right gnathopod of Mtjem diversimmius. d, part ofloft gnathopod.SPONGES.Plate LIII.Fig. A. Leucoj)hl(eus fenestratus. Specimen which has incorporatedmany calcareous fragments with its base, and gives off aremarkable smooth flat lohate process (a) from the base.In spirit. From Providence Eeef, 24 fms, X Ig.B. L. proteus. Variety.by its almost entirelymassive and smooth habit, a small part only (h) of thesurface exhibiting the usual ridged and pilose character.b', apparently accidental pit. In spirit. From ProvidenceReef, 24 fms.Nat. size.C. Dysidea gumminea. Small specimen, based on a stone,showing lateral extension into lobes. In spirit. FromProvidence Island, 1*J fms. Nat. size.D. Hippospongia intestinalis, var. Part of a largo contortedmass, showing great irregularity of growth and variationin the stoutness of the twisted lobes [the dermal sheet offibres has been abraded from the lobestowards the top ofthe figure (d)]. Dry. From Providence Island. Nat.size.Fi. A.vinella proliferans. Left-hand lialf of small specimenfrom Providence Island, 19 fms. In spirit, x f.E'.Profile view of upper part of same specimen, slightlyshaded.Nat. size.F. Desmacidon rimosa. The type specimen, showing the largevents and well-marked grooves (/,/') of the excretorycanal-system. In si)irit. From Mozambique. Nat.size.3 a