210 Froceedings of the Royal Society of Victoria. 



name (squamosa) that Woods gave in 1880 to a species described 

 by him in the Palaeontology of New Zealand, Part IV. (Corals 

 and Bryozoa), p. 29, fig. 29, which is quite different. Now, 

 although Woods' descriptions and figures are not very satisfactory, 

 because he misunderstood the structure of the Selenariidae, I 

 think his name (niarginata) should stand for Dr. MacGillivray's 

 S. squamosa ; at the same time Woods' S. squamosa cannot stand, 

 because it is evident that this species is the same as one he 

 described in T.R.S. S.A., 1879, p. 8, as S. cupola, which name 

 has been recognised by authors, and he has also described in the 

 same paper as S. exigua one which I consider to be the same 

 species ; he says it is similar to S. cupola, and was " worn." 

 This species (S. cupola) presents a very variable appearance 

 according as it is either in a perfect condition or more or less 

 worn ; but I have no hesitation in uniting Woods' S. exigua and 

 tS. squamosa with it, one of the principal characteristics of which 

 is the regular radiating series of the zooecia, for, though Woods 

 in his description of S. squamosa, says " zooecia irregularly dis- 

 posed," the figure shows them to be as regular as those of S. cupola. 

 In retaining the name S. inarginata I would apply to it the 

 description given by Dr. MacGillivray of his S. squamosa and its 

 varieties. Lunulites initia. Waters, I consider to be merely 

 a young form of this species. 



S. concinna, T. Woods. T.R.S. S.A., 1879, p. 10. 

 Also living on the Australian coasts. 



S. cupola, T. Woods. T.R.S. V., 1895, p. 49. 



S. cupola, T. Woods. T.R.S. S.A., 1879, p. 14. 



S. squamosa, T. Woods. N.Z. Pal., pt. iv., Cor. and Bry., 

 1880, p. 29. 



S. exigua, T. Woods. T.R.S. S.A., 1879, p. 8. 



The position of this species has been discussed in the remarks 

 upon S. niarginata, but I would note that I have a specimen of 

 it in which the zooecia have two projecting points or spines on 

 the outer or distal margin. Tiiough Dr. MacGillivray's figure of 

 this species shows that the marginal zooecia have an irregular 

 distal border, indicating probably the presence of spines, he does 



