BY W. M. BALE. 747 



Plumularia Torresia, von Lendenfeld. 



Ic. p. 477, PL XIII., figs. 13, U : P]. XIV., fig. 16 : P. cam/>«- 

 nula, Bu.sk. (See page 776}. 



Plumulabia tripartita, von. Lendenfeld. 



Ic. p. 477, PI. XII., figs. 8-10. = P. seUtxea, Ellis. (See page 778). 



Pennaria rosea, von Lendenfeld. 

 I.e. p. 594, PI. XXIV., figs. 40-42. 



This species is, as Mr. Whitelegge has pointed out to me, 

 identical with the P. australis of the Catalogue of the Australian 

 Hydroid Zoophytes. I have descriVjed this species as having 

 7-12 filiform tentacles, and 9-14 capitate ones, while P. rosea is 

 stated to have .30-40 and 20-30 respectively. The discrepancy 

 (especially in the number of the filiform tentacles) is very great, 

 and I cannot account for it. I have examined many hydranths 

 (including terminal ones) both from my original specimens and 

 from Dr. von Lendenfeld's ty.ies, and have not succeeded in 

 finding any with a larger number of tentacles than I have 

 recorded, except in one or two cases where the number of capitate 

 tentacles reached about 17. Mr. Whitelegge has kindly examined 

 a number of specimens with the same result. The figure which 

 accompanies Dr. von Lendenfeld's description shows a hydranth 

 with not more than 10 or 12 capitate tentacles. I have not 

 found the proboscis or oral portion separated trom the rest of the 

 body so sharply as shown l>y Dr. von Lendenfeld.* 



P. australis is very closely allied to P. symmetrica, Clarke, the 

 polypary especially so ; but the hydranths of P. symmetrica .ire 

 ovate, not flask-shaped, and have about 30 capitate and 14-18 

 filiform tentacles. 



•Dr. von Lendenfeld has a note, to which reference is wanting, at the 

 foot of the page containing his description of P. roxea, referring to page 45 

 of the "Catalogue " (the description of P. au-ftraltJi) ; it is evident, there- 

 fore, that he intended at first to refer his specimens to that species, where 

 they undoubtedly belong. 



