94 PHYLOSIPHONIA. — SIPHONOCHALINA. 



SiplionochaUna anmdata, S. O. Ridley and A. Dendy, " Report on the Mon- 

 axonida," The Zoology of the Voyage of H.M.S. ' Challenger,' part 59, 

 p. 31 (1887). 



Small, slender, erect, slightly branched tubular sponges, which attain a height 

 of 250 millim. A peduncle is generally observed which attains a length of 

 100 millim. The branches are 8 millim. thick, and distended at regular 

 intervals by annular thickenings. 



The slceleton consists of a network of fibres 0'033 millim. thick, with meshes 

 0*2 millim. wide. The spicules are very abundant, straight oxystrongyla, 

 0-08 millim. long and 0-0065 millim. thick. 



Geoqeaphicai Distribution. — East coast of Australia : Port Jackson, 

 N. S. W. {Lendenfdd). 



Phylosiphonia stalagmitis, Lendenfeld. 



Pliylosiphonia stalagmitis, R. v. Lendenfeld, " Die Chalineen des australischen 

 Gebietes," Zoologische Jahrbiicher (Spengel), Band ii. Seite 799 (1887). 



The sponge consists of branches which grow out from an extensive basal 

 mass ; these branches all lie iu one plane, and frequently anastomose, so that 

 the whole structure assumes a somewhat flabelliform appearance. The sponge 

 attains a height of 140 millim. and a breadth of 100 millim. The tubular 

 branches have a very uneven surface ; they are 30 millim. thick. The ter- 

 minal prsBosculum measures 18 millim. in diameter. 



The skeleton consists of a network of fibres 0*067 millim. thick, with meshes 

 0"3 millim. wdde. The spicides are straight oxystrongyla, 0"067 millim. long 

 and 0-007 millim. thick. 



Geoqeaphical Disteibution. — East coast of Australia : Elawarra, N. S.W. 

 (^Lendenfeld). 



Genus SIPHONOCHALINA. 



Large tubular Siphoninee, with smooth inner and conulated 

 outer surface. 



Siphon ochaliua axialis, Lendenfeld. 



Siplioyiochalina axlalis, E. v. Lendenfeld, " Die Chalineen des australischen 

 Gebietes," Zoologische Jahrbiicher (Spengel), Band ii. Seite 805 (1887). 



Erom a repent reticulate mass, upright branches arise which are simple or 

 slightly branched, and which appear very irregular, in consequence of the 



