1094 A MONOGRAPH OF THE AUSTRALIAN SPONGES, 



Gran tia raph anus. T, E. Gray (1.) 

 Sycum raphanus. E. Haeckel (2.) 

 Sycon ciliatum. 0. Schmidt (3.) 

 Sycon ciliatum, N. Lieberkuehn (4.) 

 Spongia inflata. S. delle Cliiage (5.) 

 Sycum inflatum. E. Haeckel (6.) 

 Sycarium vesica. E. Haeckel (7.) 

 Syconella proboscidea. E. Haeckel (8.) 

 Sycum tergestinum. E, Haeckel (9.) 

 Sycodendi'um procumbens. E. Haeckel (10.) 

 Sycandra raphanus. F. E. Schulze (11.) 

 Sycandra raphanus. H. T. Carter (12.) 



Radial tubes cylindrical-prismatic, mostly hexagonal, coalesce 

 with their edges throughout the whole length to the low distal 

 conus. Between those triangular prismatic inter-canals. Dermal 

 surface corymbate-shaggy. Gastral surface with slender and 

 small spines. Acerate spicules only at the distal conus of each 

 tube forming a thinner or thicker bundle, cylindrical, straight or 

 curved, at both ends tapering continuously to a fine point much 

 longer, and 2 to 4 times as thick as the triradiate and quadri- 

 radiate spicules. Tubar triradiate spicules sagittal, with unequal 



(1.) T. E. Gray. Notes on the arrangements of Sponges, with the des- 

 cription of some new Genera. Proceedings of the Zoological Society of 

 London, 1867, p. 554. 



(2. ) E. Haeckel. Prodromus eines Systems der Kalkschwamme. Jenaische 

 Zeitschrift fiir Medicin und Naturwissenschaft, 1870. Band V., Heft 2, 

 p. 239. 



(3.) 0. Schmidt. Adriatische Spongien, I.e., p. 14, Taf. I., figs. 1-ld. 



(4. ) N. Lieberkuehn. Neue Beitriige zur Anatomic der Spongien. Archiv 

 fiir Anatomic und Physiologie, 1859, p. 373, Taf. IX., fig. 3. 



(5.) (S*. delle Chiaje. Memoire sulla storia e notomia degli animali senza 

 vertebrate nopoli, Vol. III., p. 114. 



(6.) E. Haeckel Prodromus, I.e., p. 239. 



(7.) E. Haeckel. Prodronms, I.e., p. 238. 



(8.) E. Haeckel. Prodromus, I.e., p. 239. 



(9.) E. Haeckel. Prodromus, I.e., p. 239. 



(10.) E. Haeckel. Prodromus, I.e., p. 245. 



(11.) i^. ^. Schidze. Ueber den Baii and die Entwickelung von Sycandra 

 raphanus, Haeckel. Zeitschrift fiir wissenschaftliche Zoologic. Band XXV., 

 Suppl., Seite 247, Taf. XVIII. , XIX., XX., XXI. 



(12.) H. T.Carter. OnGrantiaciliata, var.spinispiculum, Crtr. Annals 

 and Magazine of Natural History. Fifth Series. Vol. XIII., 1884, p. 153. 



