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

EXPLANATION OF THE PLATES. 669Fig. B. Stelispongiis implexus. The most symmetrical of threespecimens from coral-reef, Port MoUc ; dry. Nat. size.C. Sijihonochallna buUata. Left-hand half of largest dry specimenfrom Port Curtis, showing two completed tubes, andbehind them (c) the margin of an incomplete one.two thirds nat. size.EeducedD. lieniera iestucUnaria. Small part of large dry specimen from4 fms.. Port Denison, showing the lobes and ridges whichcharacterize the surface of the species. Reduced to twothirds nat. size.E. Bhizoclialina spaihulifera. The type (dry) specimen fromThursday Island, 4-5 fms. Reduced to two thirds nat.size.[The lower part overrun by the filiform stolons of aHydroid Zoophyte.]F. B. canalis. Dry specimen, one of the types, from Port Darwin,8-12 fms.[The lower end of the figure shows that oneend of the canaliform Sponge has been broken off and thecentre of the specimen coated by a calcareous Polyzoon{Cellepora).^Reduced to two thirds nat. size.G. Toccochalina robusta. Terminal branches of a spirit-specimenfrom Port Jackson ; upper surface, showing vents.Reduced to two thirds nat. size.H. Cladochalina suharmigera. Part of a specimen in spiritfrom Warrior Reef, Torres Straits, seen from above,showing vents and short and scanty spines.Nat. size.I. Gelliodes Jihulata. One of the larger and more ramosespecimens, exhibiting several anastomoses of the branches.Dry ; from Thursday Island, 3-5 fms. Reduced to twothirds nat. size.J. PelVina murlcata. Part of the type specimen, in spirit, fromPort Darwin, between tide-marks, showing serial arrangementof the hispid cloacaltubes to form a wall-like ridge.Nat. size.K. lihaiJiidoiMus procerus. The largest spirit-specimen fromPort Darwin, 7-12 fms. [The basal portion includes a