SYSTEMATIC. 
Spong. 21 
Family Pharetronim; sea Pharetrones. 
(1) Dialytince. 
t Blastinia alata (Qu.), p. 573; t B. costata (Gf.), pp. 573, 576, 582, 585, 
589; Schmierer (53). 
t Corynella cistrophora , pp. 573, 589; t C. quenstedtii Z., pp. 573, 589; 
Schmierer (53). C. sp.; Schlosser (52) p. 553. + G. stolata Z.; 
Schmierer (53) p. 573. 
\Crispispongia pezizoides Z.; Schmierer (53) p. 573. 
t Eudea globata (Qu.); Femes (50) p. 137: (51) p. 197: Schmierer (53) 
p. 573. t E. hirsuta (Qu.), p. 573; t E. perforata (Qu.), pp. 573, 576, 
589; Schmierer (53). 
t Eusiphonella bronni (Must.); Schmierer (53) p. 574: Femes (51) p. 197. 
Mammillopora sp.; Girty (15) p. 364. 
Myrmecidium seu Myrmecium, t M. chadwicki (Hinde), f4/. grande , and 
t M. hemisphcericum ; Femes (51) p. 197: Schmierer (53) p. 574. 
tJ/. indutum ; Femes (51) p. 197: Schmierer (53) pp. 574, 589. 
t M. sp.; Femes (51) p. 197. 
Peronella seu Peronidella , \P. nodidosa (Qu.), p. 574; \P. radieiformis 
(Gf.), pp. 574, 576; Schmierer (53). f P. sp.; Femes (51) p. 197 and 
(50) p. 137. t P. squamata (Qu.); Schmierer (53) p. 574. + P. titho- 
nica ; Femes (51) p. 197. 
t Raujjia clavata 1 ; Femes (51) p. 197. 
t Sestrostomella cribrata (Qu.); Schmierer (53) p. 574. 
t Stelhspongia glomerata (Qu.), pp. 574, 576; fS. semicincta (Qu.), pp. 574, 
576, 582, 585, 589; Schmierer (53). 
t Strambergia spp. ; Femes (51) p. 187. 
t Thalamopora zitteli Zeise; Femes (50) p. 136. 
(2) Lithonmce. 
\Porosphoei'a globosa v. Hag.; Peron (46) pp. 516-536: Wollemann (74) 
p. 58. 
Family Astrosclerim:. 
Astrosclera willeyana Lister, habitat; Willey (70) p. 733: nature of the 
skeleton; Hutchinson (20): figured; Minchin (42) p. 812, fig. 3. 
C. HEXACTINELLIDA. 
Hexactinellida divided into 
(1) Suborder Stauractinophora, “the supporting skeleton of which 
consists of unconnected or easily separated stauractins ”; for families 
Protospongidce Hinde, Dictyospongidce Hall, and Plectospongiadce Fauff. 
(2) Suborder Lychniskophora , “the supporting skeleton of which 
consists of lychnisks (i.e. liexactines with octahedrally perforated 
nodal points), usually united into a more or less regular lattice work”; 
for families Mceandrospongidce, Ventriculitidce , Callodictyonidce , Coelo- 
ptychidce , etc. 
(3) Suborder Hexactinophora , “the supporting skeleton of which 
consists of hexactines” to include the four tribes Amphidiscophora 
F. E. S., Hexactinophora F. E. S. [sic, errore pro Hexasterophora~\, 
Uncinataria F. E. S. and Inermia F. E. S.; Schrammen (55) pp. 7 
& 8 . 
