Royal Society. 297 



terata! Such a mistake is incomprehciisiblo, and certainly much to 

 be regretted. 



The Cirripedia, which were regarded by Professor Jones as Mol- 

 lusca long after every body else had recognized their Annulose 

 nature, are now placed by him in the Articulate series ; but he still 

 retains such statements as that " the Cirripedia present a strange 

 combination of articulated limbs with many of the external charac- 

 ters of a mollusk," which would seem to intimate that he feels by 

 no means sure of their true position. And yet one would think that 

 the mode of development of these creatures could leave no doubt as 

 to their being not only Articulata, but Crustacea. But Professor 

 Jones gives but a scanty notice of the interesting metamorphoses of 

 the Cirripeds, and does not seem at all to appreciate their import- 

 ance. From a similar unappreciation, his classification of the 

 Crustacea is in a very backward state. 



But we will carry no further the ungrateful task of fault-finding. 

 The defects that we have indicated, and especially that relating to 

 the Ccelenterata, are, however, of a nature to prevent any thing like 

 a high or philosophical view being taken of the lower divisions of 

 the animal kingdom ; and we can only hope that a fifth edition of 

 the work may speedily be called for, and that its author will not 

 allow his conservative feelings again to lead him astray. 



PROCEEDINGS OF LEARNED SOCIETIES. 



ROYAL SOCIETY. 



January 19, 1871. — General Sir Edward Sabine, K.C.B., President, 

 in the Chair. 



" On the Structure and Development of the Skull of the Common 

 Frog (Rana tempo r aria)." By W. Kitchen Paeker, F.ll.S. 



At the close of my last paper " On the Skull of the Common 

 Fowl," I spoke of bringing before the Royal Society another, treat- 

 iijg of that of the osseous fish I was working at the early condi- 

 tions of the salmon's skull at the time. 



I was, however, led to devote my attention to another and more 

 instructive type early in the following year ; for it was then (January 

 1 869) that Professor Huxley was engaged in preparing his very im- 

 portant paper " On the Representation of the Malleus and the Incus 

 of the Mammalia in the other Yertebrata " (see Zool. Proc. May 27, 

 1869). 



In repeating some of his observations for my own instruction, it 

 occurred to me to renew some researches I had been making from 

 time to time on the frog and toad. The results were so interesting 

 to us both, that it was agreed for me to work exhaustively at the 

 development of the frog's skidl before finishing the paper on that of 

 the salmon. On this account Professor Huxley mentions in his 

 paper (o;>. cit. p. 406) that he leaves the Amphibia out of his de- 



Ann.ii: Mag. N. Hist. Ser. 4. VoIyW. 21 



