AND OTHER MEDITEEBANBAN LOCALITIES. 15 



hesitation in making a change, seeing that the two names have 

 been used by Hincks, Busk, Smitt, Vigelius, Lorenz, Freese, 

 Winther, Levinsen, and others. 



As Hincks did not publish a figure, and as Pieper's paper is 

 not very accessible, one is now given. 



This is a very delicate species and may be easily overlooked. 

 One specimen from Eapallo has the long tubular roofing-process 

 given off from the back of the zooeeium near the middle. 

 Diploecium simplex, Kirkpatrick, has similar rooting-fibres from 

 the centre of an internode, but this is not mentioned in the 

 description ; and as some specimens of Synnotum amculare have 

 few or no radicals*, I would again call attention to the frequency 

 in the attached Bryozoa of radicular disks being formed without 

 a chitinous tube growing from them. This occurs in Palmicel- 

 laria parallelata and Alysidium Lafontii. 



The first internode in a branch has one zooeeium. This is 

 also the case in JEpistomia bttrsaria ; and in Bidymia simplex 

 similar internodes occur in the earlier branches, but not through- 

 out the colony. Calwellia hicornis, however, has the first 

 internode of a new branch double ; whereas a specimen from 

 Port Phillip sent to me, named -fOalwellia gracilis, MacG., is 

 Synnotum aviculare. 



The shape of the colony, and the zocecia, as well as the 

 position of the radical, leaves no doubt in my mind that this is 

 the Gemellaria egyptiaca of Savigny, and that the avicularia were 

 overlooked, but this was often the case when their importance 

 w^as less understood. 



Loc. Trieste; Naples; Eapallo ; Portland, Victoria (2!/fflc (3^.); 

 Port Phillip ; S. Africa, a small specimen submitted to me in 

 Miss Jelly's collection. 



Epistomia btjbsaeia, L. (PI. 2. figs. 8 & 9.) 

 Notamia bursaria, Hincks, Brit. Mar. Polyzoa, p. 100, pi. iv. figs. 1-5 ; 

 which see for synonyms. 



This, so far as I am aware, has not before been found in the 

 Mediterranean, and I only obtained one specimen from Eapallo. 

 The supporting stalk carries an avieularium just below the first 



* See "Mediterranean and New Zealand Eeteporae," Linn. Soc. Journ., 

 Zool. vol. XXV. p. 267. 



t MacGrillivray, " New or little-known Polyzoa," pt. ix., Trans. Eoy. Soc. 

 Vict. vol. xdi. p. (1). 



