Proceedings of the Royal Society of Victoria. 159 



would be able to publish his work in full, cand to devote at 

 all events, one volume of its Transactions to it. It would be 

 perhaps one of the most valuable papers the Society had 

 published. Mr. Dendy's remarks, especially with regard to 

 classification of the groups, were very interesting as 

 showing that there were three gradations in form to be met 

 with among the different members of the group Calcaroa 

 Homocoela ; and that it was practically impossible to divide 

 them into a series of species clearly marked off from one 

 another, but that they were to be regarded simply as 

 varieties of one group, more or less complicated. Perhaps 

 one of tlie most interesting points was, the curious modifi- 

 cation by which the collared cells in one of the types described, 

 seemed at first sight to have changed their positions with 

 regard to the tubes, the walls of which they lined. ]\lr. 

 Dendy's diagram had taken a considerable amount of thinking- 

 out, and, from what he (Professor Spencer) had seen of the 

 specimens, accurately represented what really took place. 

 There were a number of other interesting points to which he 

 would like to allude, but it was practically impossible 

 to discuss such a paper on the spur of the moment. He 

 could only congratulate Mr. Dendy and the Society on the 

 work which had been done. 



The President thought that Mr. Dendy had not given 

 full information as to the dimensions of the specimens he 

 had described. Of course, in a diagram, things were drawn 

 to various scales, and the relative sizes could not be at once 

 understood. 



Mr. Dendy, in reply, said he had worked out the dimen- 

 sions of a number of forms. The collared cells were 

 extremely minute, and were invisible to the naked eye. The 

 largest spicules were just visible. The inhalent pores were 

 invisible to the naked eye, and required a fairly high power 

 microscope to define them distinctly. 



Professor Spencer then read a paper entitled, " Notes on 

 some Victorian Land Planarians." 



At its conclusion. 



The President remarked, that the present addition to the 

 information they already possessed appeared to be very 

 interesting. The district from which the specimens had 

 been obtained was characterised by a high rainfall, dense 



