32 Spong. 
XVII. SPONGME. 
(b) DENDROCERATINA. 
Family Aplysillid^e. 
Aplysilla sulfurea F. E. S; Rousseau (43) p. 12. 
Haadonella n. g. for II. topsenti n. sp. from Torres Straits ; Sollas (49). 
(iv) MYXOSPONGIDA. 
Family Oscarellid^e. 
Oscarellidce Ldf., family defined, for single genus Oscarella ; Lendenfeld 
(27) p. 123. 
Oscarella Vosm., genus defined, with diagnosis of 1 sp. ; Lendenfeld (27) 
pp. 123 & 124. 0. lobularis (0. S.); Rousseau (43) p. 14. 
Family Halisarcid^e. 
Halisarca dujardini Johnst. ; Rousseau (43) p. 13. 
E. OCTACTINELLIDA. 
t Astrceospongia meniscus j Foerste (17) pp. 571 &572, 575, 692, 694. 
F. HETERACTINELL1DA. 
Vacant. 
G. INCERT^E SEDIS. 
The Gastreadce of Haeckel do not exist ; Carazzi (6). 
Problematic sponge from Lias of Val Solda ; Bistram (5) pp. 86 & 87, 
pi. vii, figg. 2 & 3. 
\Actinofungia porosa From. ; Schardt & Dubois (45) p. 416. 
fA morphofungia ccespitosa de Lor., p. 416 ; +A. multiformis de Lor., p. 428 : 
Schardt & Dubois (45). 
\Cupulochonia sp. ; Schardt & Dubois (45) p. 416. 
t Hylospongia sp. ; Jukes-Browne & Hill (24) pp. 42, 178. 
illystriospongia sp. ; Girty (18) pp. 249 & 250, 320. 
iMonotheies stellata From. ; Schardt & Dubois (45) p. 416. 
Prophysema haeckelii n. sp. from the island of Radoe, north of Bergen ; 
Leon (29). 
