XVII. SPONGLE. 
30 Spong. 
Forcipina Vosm., a subgenus of Hamigera Gray ; Thiele (51) p. 384. 
ffamigera Gray, diagnosed ; Arnesen (3) p. 20 : discussion of the genus, 
p. 951 ; II. ternatensis n. sp., p. 952, pi. xxviii, fig. 18 : Thiele (50). 
H. ( Forcipina ) fabricans for Esperia fabricans 0. S., redescribed ; 
Thiele (51) pp. 383-385, pi. xxi, fig. 15. H. stipitata n. sp. ; Arnesen 
(3) pp. 20 & 21, pi. iii, fig. 3, pi. vi, fig. 6. 
Hymeraphia distincta n. sp., p. 956, pi. xxviii, fig. 21 ; H. similis n. sp., 
p. 957, pi. xxviii, fig. 22 : Thiele (50). H. plicata 0. S., a synonym 
of Eurypon clavatum (Bwk.); Thiele (51) p. 386. II vermiculata 
Bwk., vide Bubaris. 
Microciona diance for Suberites diance 0. S., redescribed; Thiele (51) 
p. 394, pi. xxi, fig. 28. 
Myxilla 0. S., discussion of the genus, p. 953 ; M. grata n. sp., p. 954, 
pi. xxviii, fig. 19 ; H. schmidtii Ridley, p. 954 : Thiele (50). M. sp. ; 
physiology ; Cotte (9). 
Plumohalichondria Crtr., diagnosed ; Arnesen (3) p. 19. P. incnistans 
(Crtr.), vide Pytheas. P. neptuni for Desmacidon neptuni O. S., 
redescribed, includes P. microcionides Crtr. ; Thiele (51) pp. 387 & 
388, pi. xxi, fig. 19. P. papillosa n. sp., Bergen, pp. 19 & 20, pi. v, 
fig. 3, pi. iii, fig. 2, pi. vi, fig. 5 ; P. plumosa (Mont.), described, p. 19, 
pi. iii, fig. 1, pi. v, fig. 2, pi. vi, fig. 1 : Arnesen (3). 
Pytheas incrustans for Plumohalichondria incrustans (Crtr.); Thiele (51) 
p. 388. 
Rhaphidophlus spinifer for R. Jilifer var. spinifera Lindgr., p. 958, pi. 
fig. 23 ; R. cervicornis n. sp., p. 959, pi. fig. 24; R. coralliophilus n. sp., 
p. 959, pi. fig. 25 : Thiele (50). 
Stylostichon Tops., a synonym of Plumohalichondria Crtr. ; Thiele (51) 
p. 387. S. involutum n. sp. from Cone Point, Natal, 34 fathoms ; 
Kirkpatrick (26) p. 250, pi. v, fig. 16, pi. vi, figg. Yia-e. 
Sub-family Bubarina:. 
Bubaiis reptans n. sp. from Cone Point, Natal, 34 fathoms ; Kirkpatrick 
(26) p. 248, pi. v, fig. 14, pi. vi, figg. 15 a-c. B. topsenti nom. nov. 
for Monocrepidium vermicidatum Tops. ; Thiele (51) p. 379. B. 
vermiculata for Hymeraphia vermiculata Bwk., redescribed ; Thiele 
(51) p. 379, pi. xxi, fig. 6 : physiology ; Cotte (9). 
Plocamia [errore Placomia ] O. S., diagnosed ; P. ambigua (Frist.), 
described : Arnesen (3) pp. 22 & 23, pi. iii, fig. 5 : Thiele (51) 
p. 389, pi. xxi, fig. 21. 
Family Axinellim:. 
Axinella 0. S., diagnosed ; Arnesen (3) p. 24. A. echidncea Kiesclinick, 
is a doubtful species; Thiele (50) p. 935. A. erecta R. & D., de- 
scribed ; Arnesen (3) pp. 24 & 25. A. sp. from Cone Point, Natal, 
34 fathoms, pp. 243 & 244: A. sp. from mouth of Tugela River, 
p. 244 ; Kirkpatrick (26). 
Axinyssa tethyoides n. sp. from Cone Point, Natal, 34 fathoms ; Kirk- 
patrick (26) pp. 244 & 245, pi. v, fig. 12, pi. vi, figg. 8 a & b. 
Dictyocylindrus abyssorum Crtr., vide Clathria dichotoma. 
Higginsia bidentifera (R. & D.) ; Kirkpatrick (26) p. 247. 
Hymeniacidon caliculatum n. sp. and var. osculatum n. var. from East 
London, Natal, 85 fathoms ; Kirkpatrick (26) pp. 241 & 242, pi. v, 
fig. 8, pi. vi, figg. 12 & 13. 
