BY It. VON LENDENFELD, PH.D. 1091 



I devide this Subfamily, which comprises a great number of the 

 Sycones of Haeckel, according to Haeckel's principle preliminarily 

 into the seven genera, which according to Haeckel (1) comprise all 

 Syconida3. 



6. GENUS. SYCETTA. Von Lendenfeld. 



Syconidae, with predominant triradiate spicules, which some- 

 times show an incipient fourth i-ay, without acerate spicules. 

 Identical with Haeckel's (2), sub-genus Sycettaga. 



11. SPECIES. SYCETTA PRIMITIVA. Haeckel (3). 



Radial tubes conic or bell-shaped, free ; between them wide free 

 intercanals. On both ends of each tubus an ostium, the gastral 

 ostium three times as large as the dermal one, dermal surface and 

 gastral surface smooth. Triradiate spicules of the skeleton all of 

 the same regular shape, with equal angles and rays, rays straight, 

 slender conic, 10 to 15 times as long as thick, with sharp point. 

 All triradiate spicules are situated in regular order, with parallel 

 rays, the basal ray is directed aborally downward in the gastral- 

 surface, and centrifugally outward in the tubar-surface. 



Colour : White (in spirits.) 



Locality: South coast of Australia (Bass's Straits, Wendt ; 

 St. Vincent Gulf, Schomburgk.) 



7. GENUS. SYCANDRA. Von Lendenfeld. 



Syconinre with acerate, triradiate and quadriradiate spicules. 

 Comprising Haeckel's (4.) Subgenera Sycocarpus, Sycocercus, 

 Sycocubus, Sycotrcbus. 



(1 ) E. Haecket. L.c. 



(2.) E. Haeckel. L.c. Band II., Seite 236. 



(3.) E. Haeckel, L.c. Band II., Seite 237, Taf. XLI. 



(4.) E. Haeckel. Die Kalkschwamme. Erne Monographic Band II., 

 Seite 294-295. 

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