SYSTEMATIC. 
Spong. 35 
(ii) MONAXONIDA. 
(a) Order HADROMERINA. 
]. Sub-order ACICULINA. 
Family Coppatiid^E. 
Topsentia glab'a (Tops.) Berg, redescribed ; Topsent (59) pp. 347 & 348, 
pi. xiv, fig. 6 . 
Family Tethyidje. 
Tethya hispida ; Kingsley (31) p. 161. T. lyncurium Johnst., minute 
structure of the spicules [see ii, b, iv, b]; Butschli (9) pp. 236-271 : 
ferments of; Cotte (13). T. prox. lyncurium , development of the 
spicules ; Maas (37): development of the buds ; Maas (38). 
Family Stylocordylid^e. 
Stylocordyla borealis (Loven.); Whiteaves (63) p. 13. 
2. Sub-order CLAVULINA. 
Family Clionid^e. 
t Cliona, sp., Pliocene of Liguria ; Bovereto (47) pp. 233 & 234. C. celata 
Grant, includes C. angidata Hanc.; Topsent (59) pp. 345 & 346 : 
Whiteaves (63) p. 13. fC. cretacea Portl.; Bowe (48) p. 71. C. sul- 
phurea ; Kingsley (31) p. 161 : habits ; Grabau (24) p. 339. C. 
viridis (0. S.) Gray, perhaps includes Hymeniacidon anqidata Bwk.; 
Topsent (59) p. 345. 
t Thoosa sabcitia, n. sp., from Lower Pliocene of Savona, Liguria; Bove¬ 
reto (47) pp. 231-233, fig. 5. 
Family Spirastrellid^e. 
Hymedesmia bistellata (0. S.) Tops.; Topsent (59) p. 346. 
Family PoLYMASTlDiE. 
Polymastia mamillaris (Muller); Whiteaves (63) p. 13. P. robusta 
Bwk.; Kingsley (31) p. 161 : Whiteaves (63) p. 13. 
Quasillina brevis (Bwk.); Whiteaves (63) p. 14. 
Tentorium semisuberites (0. S.); Whiteaves (63) p. 14. 
Trichostemma hemisphcericum M. Sars ; Whiteaves (63) p. 14. 
Family Suberitid^e. 
Laxosuberites rugosus (0. S.) Tops.; Topsent (59) p. 347. 
Prosuberites longispina Tops.; Topsent (59) pp. 346 & 347. 
Suberites antarcticus Crtr., described ; Topsent (60) p. 29 and p. 6 : 
Topsent (56) p. 4.’ S. domuncula, ferments of; Cotte (13). S. ficus 
(Johnst.), S. hispidus (Bwk.) and S. montalbidus Crtr.; Whiteaves (63) 
3 p. 14, 
