43 
Brachiopoden sich in Ruhe ihres vollständigen Gefäßsystems erfreuen 
können. 
Rostock, den 19. December 1892. 
7. Note on the History of the so-called family Teichonidae. 
By Arthur Dendy, D.Se., F.L.S., Melbourne University. 
eingeg. 23. December 1892. 
In reply to my note on »the Discovery of the true nature of the so- 
called family Teichonidae«, published in the Zool. Anzeiger (No. 395), 
Dr. R. von Lendenfeld, in No. 402 of the same journal, endeavours 
to prove that he arrived at his results quite independently of my 
work, and refuses to recognize that I have any claim to priority in the 
matter. 
He bases his defence upon a preliminary communication entitled 
»Das System der Kalkschwämme«, which he informs us that he read 
before the Vienna Academy on the 8th of January 1891, and in which 
he accuses me of wilfully ignoring, although, as a matter of fact, I 
have never seen the paper in question up to the present moment. 
My principal work on the »Teichonidae« was published in London 
in January 1891, though writhen in Australia many months previously, 
hence, of course, it is possible that Dr. von Lendenfeld may not 
have seen it before he wrote his preliminary account, though that can 
be no excuse for not referring to it in his complete work (Die Spon- 
gien der Adria), which is not even dated till April 1891 and not 
published till the following December. 
It is evident from Dr. von Lendenfeld’s writings that he has 
never personally studied the group of sponges whose true nature he 
claims to have independently arrived at, and hence, to an outsider, it 
is difficult to see what could have induced him so suddenly to abandon 
the family »Teichonidae« and adopt my views as to the relationships 
of the sponges comprised therein. 
I would, therefore, like to point out, for the benefit of those who 
might otherwise be misled by Dr. von Lendenfeld’s statements: 
1) That on Novemberji4th 1889 I communicated a paper on »the 
Pseudogastrula Stage in the Development of Calcareous Sponges« to 
the Royal Society of Victoria. 2) That in this paper I gave a prelimi- 
nary account of the results of my researches on the anatomy of » Teicho- 
nella labyrinthica« and »T. prolifera«, stating distinctly that »7. laby- 
rinthica« is a true Sycon and »T. prolifera« a typical Leucon; and 
3) that I sent a copy of this paper to Dr. von Lendenfeld. 
In short my main conclusions as to the structure and relationships 
