20 Dr. R. V. Leiidenfeld 07i Australian Sponges. 



EXPLANATION OF THE PLATES. 



Plate I. 



Fig. 1. Distichopora granulosa, natural size, showing ampullse. 



Fig. 1 a. Ditto : pore-rows, magnified. 



Fig. 1 h. Ditto : dactylopores, with ridges of the surface, seen laterally, 



mag-nified. 

 Fig. 1 c. Ditto : ampulla, magnified. 



Fig. 2. Distichopora ochracea, natural size, showing ampullse. 

 Fig. 2 a. Ditto : pore-rows, magnified. 

 Fig. 2 b. Ditto : ampulla, magnified. 

 Fig. 2 c. Ditto : gastro-canal in section, magnified. 

 Fig. 3. Distichopora conferta, natural size, showing ampullse. 

 Fig. 3 a. Ditto : pore-rows and part of surface, magnified. 

 Fig. 3 h. Ditto : ampulla, mag-nified. 



Fig. 4. Zygophijlax profunda : portion of hydrophyton, natural size. 

 Fig. 4 a. Ditto : branch, magnified. 



Fig. 46. Ditto : hydrotheca and nematophore of one side, magnified. 

 Fig. 4 c. Ditto : part of fascicled stem, magnified. 

 Fig. 5. Streptocaulus pulcherrimus : proximal part of stem, magnified. 

 Fig. 5 a. Ditto : reproductive appendage with gonothecse, magnified. 

 Fig. 5 h. Ditto : gonotheca, magnified. 



Plate II. 



Fig. 1. Cryptolaria conferta : part of stem with gonotheca, magnified. 

 Fig, 2. Flumularia variabilis : part of stem with pinna and gonotheca, 



magnified. 

 Fig. 2 a. Ditto : part of another pinna, magnified. 

 Fig. 3. Plurmdaria delicatula : portion of stem with gonotheca and pinnae, 



magnified. 

 Fig. 4. Antenmdaria irregularis: stem, showing arrangement of 



ramuli. 

 Fig. 4 a. Ditto : part of stem with ramuli, magnified. 

 Fig. 4 b. Ditto : gonotheca, magnified. 

 Fig. 5. Antennularia profmda : stem, showing arrangement of 



branches and ramuli. 

 Fig. 5 a. Ditto : portion of stem, proximal part, magnified. 

 Fig. 5 b. Ditto : portion of stem, distal part, magnified. 

 Fig. 5 c. Ditto : portion of ramulus, magnified. 



II. — Notes to the Australian Sponges recently described by 

 Carter*. By Dr. R. V. Lendenfeld, in Sydney. 



As T am just now engaged in writing a Monograph of the 

 Australian Sponges I was particularly glad to receive the 



* H. J. Carter, " Description of Sponges from the Neighbourhood of 

 Port Phillip Heads, South Australia,'' Ann. & Mag. Nat. Hist. ser. 5, 

 yol. XY. p. 196. 



