CEB AOCH ALINA. — ANTUEUOCHALINA. 89 



Ceraochalina multiformis, Lendenfeld. 



Gemocludina multiformis, E. v. Lendenfeld, "Die Clialineen des australisclien 

 Gebietes," Zoologische Jahrbiicher (Spengel), Band ii. Seite 783 (1887). 



Lobose, digitate, reticulate sponges. The dry skeleton is very soft. Surface 

 smooth. Blceleton-net with meshes 0-05-0-09 millim. wide, and fibres KJ-16 

 niillim. thick. Spicules : oxea, straight or slightly curved, pointed, 0'04-0'05 

 millim. long and 0-0009-0-005 millim. thick. 



Ceraochalina multiformis, var. dura, Lendenfeld. 



Ceraochalina multiformis, var. dura, R. v. Lendenfeld, " Die Chalineen des aus- 

 tralischen Gebietes," Zoologische Jahrbiicher (Spengel), Band ii. Seite 



784 (1887). 



Compressed, lobose, irregular sponges, which attain a maximum diameter 

 of 100 millim. The lobose processes are about 30 millim. broad and 15 millim. 

 thick. Oscula scattered over one face. Surface smooth. The sponge is pretty 

 hard and elastic. STceleton-net with meshes 0'3 millim. wide and fibres 0-05 

 millim. thick. Spicules : oxea, straight, 0-04 millim. long and 0-0009 millim. 

 thick. 



Geogeaphical Distribution. — New Zealand : Port Chalmers {Parker). 

 Group PLACOCHALININ.ffi:. 



Frondose Chalininse with narrow meshes of the skeleton-net. 

 Oscula, when present, confined to one side of the lamella. 



Genus ANTHEROCHALINA. 



Very thin lamellar Placochalininse, with smooth surface and 

 without apparent oscula. The skeleton consists of a dense net- 

 work of fibres composed of styli or oxea, and appears somewhat 

 renierid. 



Antherochalina perforata, Lendenfeld. 



Aniheroclialina perforata, E. v. Lendenfeld, " Die Chalineen des australischen 

 Gebietes,'' Zoologische Jahrbiicher (Spengel), Band ii. Seite 788 (1887). 



Sponge elegantly flabelliforni, attached by a long and slender peduncle 

 5 millim. thick, attaining a height of 140 millim., a breadth of 80 millim., 

 and a thickness of 3 millim. Perforations are observed near the upper margin, 



