12 Spong. 
XVII. SPONGIiE. 
[ 1905 ] 
(ii) DIGTYONINA. 
iCraticularia vulgata Poc. : ZahXlka (48) pp. 183, 184. 
t Gnbrospongia reticulata : Favre (10) p. 96. 
t Pleurostoma bohemicum : Zahalka (48) pp. 22, 159, 168. 
t Plocoscyphia sp. : Favre (10) p. 98 ; ZahXlka (48) pp. 22, 55, 159. 
f Pyrospongia vrbcei Zah. : Zahalka (48) pp. 183, 184. 
\Scyphia beaumonti : Favre (10) p. 97. 
t Ventriculites angustatus : Zahalka (48) pp. 22, 159, 168. — t V. cervi- 
cornis, p. 95 ; t V. interruptus , p. 95 ; t V. pedester , p. 94 ; t V. radiatus , 
p. 94 : Favre (10). — V. sp. : ZahIlka (4$) pp. 18, 22, 159. 
D. DEMOSPONGIiE. 
Tetraxonida, defined to include all Demospongiae except Myxospongiae and 
Keratosa : Dendy (8) pp. 63, 64. 
(i) TETRA CTINELLIDA. 
Tetractinellida, defined and divided into two Suborders — (1) Homosclero- 
phora = Microsclerophora Sollas, “in which raicroscleres and mega- 
scleres are not yet sharply differentiated from one another and no 
triaenes are developed ” (p. 64), (2) Astrophora (p. 67), (3) Sigmato- 
phora (p. 89) ; the group Carnosa to be abandoned, the Microsclero- 
phora to be placed among Tetractinellida as a Suborder Homo- 
sclerophora, the Microtriaenosa to be placed amongst the other 
triaene-bearing Tetractinellida, and the Oligosilicina to be placed 
near the Tethyidiv , pp. 61, 65 : Dendy (8). 
(1) Sub-order CHORISTIDA. 
Ancorina O., defined : Baer (1) p. 6 ; Dragnewitsch (9) p. 12. — A. bacil- 
lifera (Carter), described : Baer (1) pp. 6-9, pi. i, fig. 3, pi. iii, 
figg. 11-19 — A. simplex Lend., described : Dragnewitsch (9) 
pp. 12, 13. 
Aurora Soli., defined, p. 10; A. globostellata Carter, described, p. 11 : 
Dragnewitsch (9). 
Calcabrina Sollas, a synonym of Stceba Sollas, q. v. ; Dendy (8) p. 70. 
Ginachyra Sollas, defined : Dragnewitsch (9) p.‘ 9. — G. barbata Soil., 
structure of the oscules and comparisons with other species : Kirk- 
patrick (15). — G. voeltzkowi Lend., described : Dragnewitsch (9) 
pp. 9, 10. 
Gorticium plicatum 0. S., referred to Stoeba Sollas, q. v. ; Dendy (8) p. 70. 
Graniella 0. S., defined, p. 95 ; G. elegans , n. sp., Gulf of Manaar, 11|- 
36 fathoms, pp. 95, 96, pi. iv, fig. i : Dendy (8). (See also Tethya infra.) 
Dercitopsis , n. g. of Plakinidce , for D. ceylonica , n. sp. from off Galle, 
100 fathoms : Dendy (8) pp. 65-67, pi. ii, fig. i. 
Ecionema Bow., defined, p. 79 ; E. carteri , n. sp. from Gulf of Manaar and 
Ceylon Seas, shallow water to eight fathoms, pp. 79-81, pi. i, fig. 5, 
pi. iii, fig. 1 ; E. laviniensis , n.sp. from off' Mount Lavinia, 30 fathoms, 
pp. 81, 82, pi. iii, fig. 2 : Dendy (8). 
Geodia Lam., defined, p. 83 ; G. areolata Carter, described, pp. 87, 88 : 
Dendy (8).—#. magellani Soil., described : Thiele (36) p. 408. — G. 
perarmata Bow., described, pp. 83-85 ; G. peruncinata , n. sp. from 
12 miles off* Galle, 100 fathoms, pp. 85-87, pi. iii, figg. 3, 3 a, 3b ; G. 
ramodigitata Carter, described, pp. 88, 89 : Dendy (8). 
Geodiidce , defined : Dendy (8) p. 83 ; Baer (1) p. 9. 
Myriastra Sollas, defined, p. 71 ; M. clavosa (Ridley), described, p, 72 ; M. 
tethyopsis (Carter), described, pp. 72-74 : Dendy (8). 
