ZOOLOGICAL AltO BOTANICAL ASSOCIATION. 91 



3 jEtea (Lamouroux). 



1. — A, anguina (Z.). 

 Bass's Strait; Frcmantle; Van Diemen's Land; Dr. Harvey. 

 Port Fairy ; Mr. Dawson. New Zealand ; Dr. Joliffe. 



2. — A. ligulata (Busk). 

 Bass's Strait; Dr. Harvey. 



Subsect. 2. — Bi-Multi8erialaria. 

 Family 5. — Farciminariadae (Busk). 

 1. — Fahctmlnaiha (Busk). 



1 F. aculeata (Busk). 



Van Diemen's Land ; scarce ; Dr. Harvey. 



Family 6 Gemellariadae (Busk). 



1. — DrorMiA (Busk). 

 1. — D. simplex (Busk). 

 Bass's Strait ; a single fragment ; Dr. Harvey. 



2. — Dimetopia (Busk). 

 1. — D. spicata (Busk). 

 Bass's Strait ; Dr. Harvey. 



2. — D. cornuta (Busk). 



Bass's Strait ; parasitical on polyzoa ; very abundant ; Dr. Harvey. 

 New Zealand ; Dr. Joliffe. 



3. Calwellia, n. g.* 



Cells in pairs, joined back to back. Each pair of cells arising by 

 tubular prolongations from the pair next but one below it. Each pair 

 having a direction at right angles to the next. At a bifurcation each 

 cell of the primary pair giving off a secondary pair. Ovicell subglo- 

 bular, placed immediately above and behind the posterior margin of the 

 cell aperture. 



* I dedicate this genus, at Dr. Harvey's suggestion, to Mr. Callwell, of Dublin, the 

 well-known microscopist. 



