494 TROF. A. DBNDY AND MISS L. M. FREDERIOK ON 
This species is evidently very closely related to Stelletta truncata Kieschnick 
[1898] = Ancorina amboinensis Lendenfcld [1903], from Amboina, in the 
Malay Archipelago, differing in the great abbreviation of the cladi of the 
trifenes, especially of the anatrisenes. 
Register No. and Locality. VI. 16 h. Long Island. 
18. Aurora rowi Bendy [1916 B]. 
There are three lobose pieces which have probably been attached to rock ; 
the largest measures 40 mm. in length, 20 mm. in breadth and 15 mm. in 
thickness ; it has a bit of branching coral growing through it. The surface is 
sub-glabrous and crumpled, with irregular grooves of varying depth running 
across it. The oscnla, which are few in number and single, lie at the apices 
of small rounded prominences ; they vary in size, the largest being 2 mm. in 
diameter. Inhalant pores are scattered singly over the surface. Colour in 
spirit chocolate-brown ; texture compressible but fairly compact. 
The skeleton arrangement and spiculatiou agree with those of the type 
specimen, the only difference being the occasional occurrence of irregular 
branching of the cladi of the ortliotrisenes ; this is not sufficient, however, 
to justify a specific distinction. 
Previoudy known ZHstrihition. Seychelles (Dendy). 
Register No. and Locality. II. 8, Wooded Isle. 
19. Asteropus simplex [Carter]. 
(For literature and synonymy vide Dendy [1916 B].) 
The single specimen is an irregular, cake-shaped mass, about 80 mm. in 
maximum diameter. The upper surface is uneven, somewhat ridged and 
depressed at intervals ; a number of open vents, 1 mm. in diameter, are 
scattered over it. Colour in spirit purplish brown ; texture firm, compact, 
coarse. 
The skeleton arrangement and spicnlation agree with those of the ' Sealark ' 
specimen, and need not be described. 
Previously known Distribution. Fremantle and Port Phillip Heads, 
Australia ; Hayti [Carter) ; S.W. Australia (Flentschel) ; Indian Ocean 
(^Dendy) . . 
Register No. and Locality. VI. 5, Sandy Isle. 
20. Erylus proximus Dendy [1916 B]. 
The single specimen, an irregular lobate mass, is 28 mm. in length, 22 mm. 
in breadth and 15 mm. in thickness. Tiie surface is uneven and punctate, in 
parts covered with calcareous debris. Scattered singly over an irregular 
area, near the end where the sponge was probably attached, are many minute, 
widely open, dermal pores, while over the major portion of the rest of the 
sponge are numerous white specks, giving the surface its punctate appearance; 
these are probably closed inhalant pores. On a prominent part of the upper 
