Chilton. — On Occurrence of Fiedericella sultana. 221 



physes always wanting. The reproductive organs appear first 

 in spots on the surface of the thallus, but finally almost com- 

 pletely cover it, and consist of unilocular and plurilocular 

 sporangia. 



Phyllitis fascia. 



Root a minute disc. Stem very short, cylindrical at the base 

 but immediately becoming flattened, and gradually expandi)ig 

 into a thin linear lanceolate or obovate frond, 10-30 cm. long 

 and 1-4 cm. broad, sometimes very obtuse at the apex, but at 

 other times more acute. The nui,rgin waved, and occasionally 

 notched. The surface smooth, and not shining. Colour at first 

 olive-green, but gradually becoming more yellow as the plant 

 advances in age, finally attaining to a beautiful greenish-golden 

 hue. (The species is scarcelv distinguishable from P. ccBspitosa, 

 J. Ag.). 



General Distribution. — Coasts of the North Atlantic and 

 Mediterranean, Alaska, North - western America, Cape Horii, 

 Falkland Islands, New Zealand, Japan, and Formosa. 



P.S. (February, 1907). — Since writing the above I have col- 

 lected a specimen of this plant at Wellington Heart s; and it has 

 also been recorded from the coast of New South Wales. 



Art. XXIII. — On (he Occurrence of Fredericella sultana in 

 Ne-w Zealand. 



By Arthur Dendy, D.Sc, F.L.S., Professor of Zoology in 

 King's College (University of London). 



Communicated by Dr. Chilton. 



[Read before the Philosophical Institute of Caiiterhury, Cith June, 1906.] 



The specimen upon which the identification of this New Zea- 

 land fresh-water polyzoon with the well - known and widely 

 distributed Fredericella sultana is based was found growing on 

 a dead leaf in a pond in the Acclimatisation Society's Gardens 

 at Christchurch, on the 13th September, 1898. I made a sketch 

 of the fully extended zooid in the Uving condition, and satisfied 

 myself that the lophophore was not hippocrepian, but that the 

 tentacles (about twenty-two in number) were arranged in the 

 manner figured and described by AUman* for Fredericella 

 ■sidtana. The much-branched tubular coenoecium is of a pale- 



* " Monograph of the Fresh- water Polyzoa," London, Roj'^al Society, 

 1856. 



