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

;EXPLilTATTOX OF THE PLATES. 671Fig. E. Stelletta purpurea. One of the larger specimens fromabove, showing {e) vent. In spirit. West Island, TorresStraits, 7 fms.Nat. size.r. Clathria coppinrjcri. The type specimen (dry), fromAlbany Island, Torres Straits, 3 fms. One third nat. size.[The margins are slightly reduced by fracture.] F'. Thesame ; two meshes, from front, from specimen in spirit. WestIsland, Torres Straits, 3-4 fms. Nat. size.G. Myxilla arborescens. About one half of type specimen (inspirit), from Port Jackson, 0-5 fms.Nat. size.H. Tethyopsis dissimilis. Larger of the two specimens fromPort Darwin, 7-12 fms. Inspirit. Nat. size. [Imperfectabove and below.]I. Clathria acuUata. The type specimen, from ThursdayIsland, Torres Straits, 3-4 fms. In spirit. Nat. size..J. Raspailia hifurcata. The type specimen (in spirit, butmacerated), from Prince of Wales Channel, Torres Straits,5-7 fms. Nat. size.K. Esperia pellucida. One lobe of type specimen, with partof incrustation involving stones &c. ; in spirit j from AlertIsland, Torres Straits, 7 fms.Nat. size.L. EJiaphldoplilus arborescens. The type specimen (dry),from Friday Island, Torres Straits. Two thirds nat.size.Plate XLI.*Fig. A. Hipposponrjia derasa. The type specimen, from WestIsland, Torres Straits; dry, macerated. Seen from thelongest side.Reduced to two thirds nat. size.B. Dysidea semicanalis. The type specimen, from North-eastcoast of Australia ; dry and macerated. Eeduced to onehalf nat. size.* The microscopic details in this and the following Sponge-plafes have beenin almost all cases prepared with the aid of sketches made to scale by Mr. Eidleyhimself.