22 Spong. 
XVII. SPONGI^. 
[1904] 
Pamily PoLYMASTiD^. 
Polymastia corticata R. & D., redescribed : Topsent (50) pp. 119, 120. — 
P. mamillaris : Mar. Biol. Ass. (34). — P. moeandria, n. sp., diag- 
nosed and described: Wilson (60) pp. 115-117. 
Rhaphidorus, definition of genus, p. 120; li. setosus T., redescribed, 
pp. 120-122: Topsent (50). 
Thecophora semisuherites : Schepotieff (42) p. 3. 
Tylexocladus, definition of genus, p. 122; T. jouhini T., redescribed, 
pp. 122, 123: Topsent (50). 
Family Spirastrellid^. 
Hymedesmia unistellata T., n. var. aspera, redescribed, pp. 112, 113; 
H. chondrilloides T., redescribed, pp. 113, 114; H. stelligera C, 
redescribed, p. 114: Topsent (50). 
Latrunculia hiannulata T., redescribed, p. 115; L. insignis T., redescribed, 
pp. 115-117: Topsent (50). 
Sceptrintus, definition of genus, p. 117; >S'. richardi T., redescribed, 
pp. 117-119: Topsent (50). 
Family SuBERiTiDiE. 
FicuUa [Ficulina ^Jicus contains eggs of Sepia : Gruvel (15). 
Suherites laticeps^ n. sp., described, pp. 124, 125 ; S. gihhosiceps, n. sp., 
described, pp. 125, 126: Topsent (50); S. domuncula: Mar. Biol. 
Ass. (34). — S. domuncula, spongosterin obtained from : Henze (16). — 
S. prototipus, S. domuncula : Sowinsky (46) p. 289. 
Rhizaxinella biseta, n. sp., described, pp. 126, 127; R. uniseta, n. sp., 
described, pp. 127, 128: Topsent (50). 
(b) Order HALICHONDRINA. 
Family Haplosclerid^. 
Amorphina caspia, A. protochalina, A. dubia, A. grossa: Sowinsky (46) 
pp. 173, 289. 
Cacochalina digitata, G. irregularis : Sowinsky (46) p. 289. 
iCeraochalina reteplax tenuis, n. var., described, (J. nuda var. oxyus L., 
redescribed: Thum (49) pp. 15-17. 
Chalinidce, nutrition in : Cotte (6). 
Chalina oculata : Mar. Biol. Ass. (34). 
iChalinissa elongata L., redescribed, p. 13; C. communis tenuis, n. var., 
described, p. 14: Thum (49). 
\Chalinopora typica, var. tenuispina L., redescribed: Thum (49) p. 11. 
•XCladochalina euplax L., redescribed: Thum (49) pp. 11, 12. 
Cladocroce spathiformis, n. sp., described: Topsent (50) pp. 242, 243. 
iEuchalina exigua, var. arhorea L., redescribed : Thum (49) pp. 20, 21, 
Gelliodes hifacialis, n. sp., described, pp. 229, 230; G., sp., described, 
pp. 230, 231 : Topsent (50). 
Gellius angulatus (Bowerbank) R. and D., redescribed, p. 231 ; G.fhulatus 
(Schmidt) S., redescribed, p. 231 ; G. flagellifer^. and D., redescribed : 
Topsent (50) pp. 231, 232. — G. perforatus, n. sp., diagnosed and 
described, pp. 130, 134 : Wilson (60). 
Halichondria fibrosa (Fristedt) L., redescribed, p. 247 ; H. leuconoides T., 
redescribed, pp. 247-249: Topsent {bO).— H. panicea: Mar. Biol. 
Ass. (34). — H. panicea, bionomics : Cuenot (7). 
