ANNULOSE ANIMALS. 295 



exactly opposite, triangular, mouth truncated, with a small central 

 tooth. 



Differs from Th. articulata (Johnst., Brit. Zoopli., f.3,4) in the 

 form of the cells. .There are no vesicles on my specimens. 



Fam. TUBULIPORID^E. 



152. Tubulipora patellata. Lamx. 

 Inhabits New Zealand. Dr. Sinclair. 



Fam. 



153. SpiroMs Zelandica. Gray. 



Inhabits New Zealand, Great Barrier Island, on Patella 



Hookeriu 



Shell reversed, whorls two or three, rapidly enlarging ; the last 

 with three spiral ridges, the middle rib most prominent. 



Fam. SPONGIAD^E. 



154. Spongia Sinclairi. Gray. 

 Inhabits New Zealand. Dr. A. Sinclair. 



Branchy ; branches cylindrical, forked ; apices conical, yellow ; 

 surface with branched subcylindrical grooves, in certain spots ; 

 ostioles small, numerous. 



Var. 1. Branches elongate, cylindrical, free. 



Var. 2. Branches short, repeatedly forked, apices often anasto- 

 mosing. 



155. Spongia ramosa. Gray. 

 Inhabits New Zealand. Dr. Sinclair. 



Pale brown, soft, spongy, branchy; branches elongate, sub- 

 cylindrical, of a very fine uniform texture, with a few small scat- 

 tered ostioles in a line on each side; fibres horny, very thin. 



Var. 1. Branches moderately elongate, sometimes anasto- 

 mosing. 



Var. 2. Branches very long, free. 



156. Spongia varia. Gray. 



Inhabits New Zealand. Dr. Sinclair. 



Pale brown, soft, flexible, branchy ; branches elongate, sub- 

 cylindrical, soft, of a fine texture, with large scattered ostioles ; 

 tips of the branches subclavate, sometimes united to one another. 



Like the former, but of a larger size, rather looser texture, and 

 with larger ostioles. 



