160 Notes on the Cheilostomatous Polyzoa 



and especially to Mrs. Robertson, Dr. Mueller, Mr. Ellery, 

 and Mr. Verdon, whose donations have been most valuable. 



Class.— POLYZOA. 



Order I. — P. infundibulata. 



Sub-order I. — Cheilostomata. 



Sect. I. — Articulata. 



Subsect I. — Uniserialaria. 



I. Fam. Catenicellib-tE, Busk. 



I. Gen. Catenicella, Blainville. 



a. — Catenicellce fenestrate, Busk. 



1. C. lorica, Busk. Port Phillip, Dr. Mueller; Cape 



Otway, Mr. J. Payter. 



2. C. ventricosa, Busk. Queenscliff; Western Port ; 



Sealers' Cove, Dr. Mueller. 



A very variable species; lower lip sometimes notched, at 

 other times with a minute submarginal pore, and frequently 

 straight and entire. 



3. C. hastatu, Busk. Queenscliff; Western Port; Cape 



Otway, Mr. J. Payter; Cape Lefebre and Sealers' 

 Cove, Dr. Mueller. 



Of this species there are two marked varieties. The com- 

 mon form agrees precisely with the description and figure 

 given by Busk. The other is much stouter, and has the 

 lateral processes of enormous size, extending completely to 

 the base of the cell, as in C. alata, which species this form 

 very much resembles; the superior processes are broad, 

 rounded, and pierced by numerous apertures, the avicularian 

 chambers wider than in the common variety, and the large 

 inferior process also frequently presents several apertures. It 

 may always be readily distinguished from C. alata, the only 

 species with which it can be confounded, by the perforations 

 on the supra-avicularian process. 



4. C. alata, Wyv. Thomson. Queenscliff; Kangaroo 



Island ; Holdfast Bay, Dr. Mueller. 



5. C. plagiostoma, Busk. Western Port; Queenscliff; 



Cape Otway, Mr. J. Payter; Sealers' Cove, Dr. 

 Mueller. 



