SYSTEMATIC. 
Spong. 13 
Family Pharetronidje seu Pharetrones. 
\Bactronella parvula, B. australis : Dennant & Kitson (8). 
\Blastinia aspera: Fox-Strangways (12) p. 40. 
\Corynella sp. : Jahn (25). 
t Discoelia peronni : Baumberger (1) p. 21. 
t Elasmoiera sequana , E. crassa : Baumberger (1) p. 21. 
f Elasmostoma consobrinum, E. crassum , E. scitulum , E. sp. : Jukeb-Browne 
& Hill (26) p. 504. — E. sp. : Jahn (25). 
t Holcospongia ( Spongia ) Jloriceps, H. polita ( Stellispongia corallina ) : Fox- 
Strangways (12) p. 40. 
t Manon marginatum : Jukes-Browne & Hill (26) p. 506. 
\Oculospongia sp. : Baumberger (1) p. 21. 
t Peronidella recta , H. : Fox-Strangways (12) p. 40. 
\Pha,retrospongia strahani : Jukes-Browne & Hill (26) p. 504. — P. 
strahani : Hinde (19). 
iPlectroninia balbi : Dennant & Kitson (8). 
t Porosphcera, history, and full description of genus and species, pp. 1-25 ; 
P. globular is, P. nuciformis, P. woodwardi, P. pileolus redescribed, 
pp. 19-23; P. patelliformis , n. sp., P. arrecta , n. sp. described, pp. 23, 
24: Hinde (18). — P. globularis , P. nuciformis, P. patelliformis : Hinde 
(19). — P. pileolus, P. sp. : Holmes (20). — P. globularis : Jahn (25). — 
P. globularis , P. globularis var. nuciformis, P. pileolus , P. pileolus 
var. patelliformis, P. pileolus var. arrecta'. Rowe (41) p. 293. 
t Siphonoccelia crassa: Baumberger (1) p. 21. 
Sparsispongia gemmata : Baumberger (1) p. 21. 
t Spongia [Holcospongia] Jloriceps : Fox-Strangways (12) p. 49. 
t Stellispongia salevensis : Baumberger (1) p. 21. 
+ Tretocalia pezica: Dennant & Kitson (8). 
t Tremospongia sp. Baumberger (1) p. 21. 
+ Woodwardi : Jukes-Browne & Hill (26) p. 505. 
C. HEXACTINELLIDA. 
(i) LYSSAGINA. 
Hexasterophora, characters of sub-order: Schulze (43) p. 172. 
Amphidiscophora, characters of suborder: Schulze (43) pp. 180, 181. 
Family EuPUCCTELLiDAfi. 
Euplectellidce , characters of family with list of genera: Schulze (43) 
pp 172, 173. 
Euplectella, characters of genus, p. 132 ; E. suberea W. T., redescribed, 
pp. 9-15; E. nobilis F. E. S. n. sp., described, pp. 15-17; E. asper- 
gillum R. O., redescribed, pp. 17-21 ; E. (? simplex F. E. S.), re- 
described, pp. 21, 22 : Schulze (43). — E. suberea W. T., redescribed : 
Topsent (50) pp. 38, 39. — E., sp., described : Wilson (60) pp. 33, 34. 
Holascus , characters of genus, p. 130; H. tenuis F. E. S. n. sp., described, 
pp. 3-7 ; H. obesus F. E. S. n. sp., described, pp. 7, 8 ; II. fibulatus 
F. E. S., redescribed, pp. 8, 9 : Schulze (43). 
Malacosaccus fioricomatus T., redescribed : Topsent (50) pp. 33-38. — M. 
unguiculatus F. E. S., redescribed : Topsent (53a). 
Regadrella, characters of genus, p. 134; R. (? phoenix O. Sch.), described, 
pp. 22, 23: Schulze (43). — R. phoenix Sch., redescribed: Topsent 
(50) pp. 39, 40; (53a). — R., sp., described, pp. 35, 36; R. delicata , 
n. sp., diagnosed and described, pp. 36-42: Wilson (60). 
