7-i Procee(/inf/s of the Royal Society of Victoria. 



Sub-Genus. — Synute, Dendy. 



Dhifj'nos'o-;. — Sponge compound, consisting of many 

 Ute-lika individuals completely fused together and invested 

 in a common cortex composed largely of huge oxeote 

 spicules. 



(B'or species see Part .'^ of tlie ]_)resent ]mper.) 



Genus VII. — Utella, nov. gen. 



Diagnosis. — Flagellated chambers elongated, arranged 

 I'aclially around the central gastral cavity. ThfU'e are no 

 longitudinally arranged oxea in the dermal cortex, but a 

 layer of oxeote spicules lies beneath and parallel to the 

 gastral surface. The tubar skeleton is articulate. 



I propose this genus for H^ckel's Sycandra hystrix* 

 Schmidt's Ute utriculus (the Sycandra utriculus of 

 Hgeckel-f-) may perhaps also be included therein. 



No Australian species are as yet known. 



Genus VIII. — Anamixilla (PolejaeH" emend.) 



D'nujnosls. — Flagellated chamber's elongated and radially 

 arranged. There is no special tubar skeleton, the skeleton 

 of the chamber layer consisting of large radiate spicules, 

 arranged without regard to the direction of the chambers, 

 and of the outwardly directed basal rays of subgastral 

 tri radiates. 



(For species see Part 3 of tl)e present paper.) 



Genus IX. — Sycyssa, Hpeckel. 



Diagiiosis. — The tiagellated chambers are elongated and 

 arranged radially around the central gastral cavity. The 

 skeleton consists exclusively of oxeote spicules. 



The only known species of this genus is Hyeckel's Sycyssa 

 huxleyi,\ from the Adriatic. 



Genus X. — Limeandra (Hreckei, emend.) 



Diagnosis. — The flagellated chambers are spherical or sac- 

 shaped, irregularly ari-anged. and communicating with the 



Die Kalk.scliwiiinme. Vol. II, p. 375. t Loc cit., p. 370. 



I Loc. cit., p. 260. 



