3-40 JOTTINGS FROM SYDNEY UNIVERSITY BIOLOGICAL LABORATORY, 



JOTTINGS FROM THE BIOLOGICAL LABORATORY OF 

 SYDNEY UNIVERSITY. 



By Professor William A. Haswell, M.A., D.Sc. 



No. 17. Three Zoological Novelties. 



I. The occurrence of a .second species of Phoronis in Port 

 Jackson. 



Phoronis australis, shortly characterised by me some years ago* 

 and more recently described in detail by Benhara,t differs widely 

 from all the known European species, not only in its relatively 

 gigantic size (two and a half to five inches), but also in the form 

 of the lophophore and the arrangement of the tentacles. In these 

 respects it approaches a species obtained by the " Challenger" Expe- 

 dition to the south of the Philippines, and described by Mcintosh; 

 in the " Reports " under the name of Phoronis Buskii. Phoronis 

 australis has only been found in one part of Port Jackson — far up 

 opposite the promontory of Ball's Head, in a depth of about 12 

 fathoms. Its mode of occurrence is extremely remarkable, and, 

 as both Benham and Cori§ have misunderstood my statements!] on 

 the subject, it may be well to repeat them here. 



Phoronis australis occurs in communities of twenty or thirty 

 in spaces in the substance of the wall of the tube inhabited and 

 formed by a species of Cerianthus. Each worm has a tube of its 



'' ' P.L.S.N.S.W.' Vol. vii. (1S82). 



+ ' Quart. Jouni. Micro. Set.' Vol. xxx. (1889). 



+ " Zoology," Vol. xxvii. (ISSS). 



§ ' Zeitschr. f. wiss. Zool.' li. Bd. (1891). 



II ' P.L.S.N.S.W.' Vol. ix. p. 1019 (1884). 



