Mr. A. W. Waters on Australian Bryozoa. 263 



different I hesitate either to unite them or to give a new 

 name, and therefore follow Ridley in regarding this as 

 Busk's species, since I am not certain that L. crassiuscula^ 

 Smitt, is identical, whereas there is no doubt that this is the 

 species described by Ridley. 



In the figures of both this and L. ciliata I have not 

 shown the convex shape of the zoarium, in order that the 

 variations in the peristome might be clearly seen. 



Log. Living : Sandy Point [R.) ; off Vaucluse Point, 

 Port Jackson, 5 fath., and Bondi Bay, New South Wales ; 

 BahusiaC?) [Sm.). Fossil: Crag (?). 



91. Lichenopora ciliata (Busk). (PI. VII. fig. 5.) 



Discoporella ciliata, Busk, Oat. Mar. Pol, pt. iii. p. 31, pi. xxx. fig. 6, and 

 pi. xxxiii. fig. 4; Haswell, Cyclost. Polyzoa from Port Jackson, 

 p. 354. 



In a specimen from Port Stephens the zooecia are irregu- 

 larly arranged, or in parts indistinctly radial, and the inner 

 edge is prolonged, usually with a deep notch in front, forming 

 an apparent sinus ; sometimes the peristome is divided into 

 several processes, and in some cases the zooecial tubes can be 

 seen to be slightly ridged. Zooecial aperture about 0"07 

 millim. diameter. There are numerous long hair-like spines 

 growing from all parts of the zooecial tube and some from the 

 central cancelli. The ovicell spreads among a number of 

 zooecial tubes and opens with a long inflated tube directed 

 towards the centre of the zoarium. 



It will be seen that this approaches very closely to L. 

 grignonensis^ and that it differs from L, echinata, MacG., in 

 not having rounded central cancelli, from L. complicata, Has- 

 well, in not having the peristome round and entire, and from 

 L. reticulata, MacG., in not having the peristome produced 

 on the inner border but on the outer. I have a specimen 

 from Port Phillip which agrees with this in having the central 

 portion reticulated, and has similarly numerous long spines ; 

 another one from the same locality is similar in regard to 

 the arrangement of the zooecia, the shape of the zooecial 

 tubes, and the peristome ; but the large rounded central can- 

 celli are closed with a perforated pellicle, and above this there 

 is the commencement of a thin, calcareous, perforated, plain 

 crust, which is, no doubt, the commencement of an ovicell. 

 There are in this last specimen a few long spines from the 

 cancelli, but none from the surface of the zooecial tubes. 



Ought not L. ciliata to be considered a variety of L. ver- 

 rucaria, Fab. ? 



