SPONGOZOA. 
6 8pong. 
Thecophora ibla, Thoms. ; Tr. Conn. Ac. iii. pi. vii. fig. 1. 
Desmacidon plumosa, sp. n., Bowerbank (2) p. 768, pi. Ixxviii. (Shark’s 
Bay, West Australia). 
Chalina verticillata^ sp. n., id. (3), p. 769, pi. Ixxix. (Australia). 
Oplitospongia fucoidea^ sp. n., id. 1. c. p. 771, pi. Ixxx. (Shark’s Bay). 
Rhaphiodesma radiosa\^sum\, sp. n., id. 1. c. p. 773, pi. Ixxxi. (Savanilla, 
S. America, 11® S. lat., 75® W. long). 
DeaneafavoideSf sp. n., id. (2), p. 535, pi. Ivi. figs. 1 & 2 (W. Indies?). 
Farrea inermis^p. 536, pi. Ivi. figs. 3 & 4 (W. Indies ?), perarmata, 
p. 538, pi. Ivii. figs. 1 & 2 (W. Indies), irregularis^ p. 539, pi. Ivii. figs. 3 
& 4 (Algiers), id. 1. c. spp. nn. 
Corallistes howerbanki (Johns.), Carter (4), p. 460 (= C. typus, Sdt.), 
(Cape St. Vincent, 75-374 fathoms). 
Discodermia polydiscus (Boc,), id. 1. c. p. 462 (Cape St. Vincent). 
Macandrewia azorica^ Gr. (Daciylocalyx macandrewi, Bbk., Corallistes 
clavatella^ Sdt.), id. 1. c. p. 464. 
Azorica pfeifferce^ Cart., id. 1. c. p. 766, Cape St. Vincent. 
Marshall’s classification (7) of the Hexactinellidce: — 
I. SYNAULOiDiE : Sclerotkamnus, M. (clausiy M.). II. Asynauloid^: 
A. Monacidas : Eurete^ Semp. (simplicissimay S.). B. Pleionacidse : 
Lanuginella, Schm. {pupa, S.), Asconema, Kt., {setuhalense, K.), Farrea, 
Bk., Dactylocalyx, Stb. {pumiceus, St., crispus, Schm.), Periphra- 
gella, M. {elisce, M.), Aulodictyon, Kt. {facundun, Schm.), Fieldingia, 
Kt. {lagettoides, K.), Aphrocallistes, Gr. [beatrix, Gr., bocagii, Wr.). 
C. Pollacidse : (a) Holteniidce : Holtenia, Schm. {pourtalesi, Schm.), 
Crateromorpha, Gr. {meyeri, Gr.), Rossella, Cart, (velaia, Th., antarctica. 
Cart., philippinensis, Gr.), Sympagella, Schm. {nux, S.), Placodictyon, 
Schm. {cucumaria, S.) ; (0) Euplectellidoi : Euplectella, Ow. {oweni, Herkl. 
& Marsh., aspergillum, Ow.), Ilabrodictyon, Th. (speciosum, Th.) ; 
(v) Hyalonematidce: Labaria, Gr. {hemisphcerica), Pheronema, Leid. (awwoj, 
L., carpenteri, Th., grayi, Kt.), Semperella, Gr. (schultzi, G.), Ilyalo- 
nema, Gr. {cebuense, Higg., thomsonis, Marsh., sieboldi, Gr.). 
Fossil Sponges. 
ZiTTEL, K. A. Ueber Codoptychium, ein Beitrag zur Kenntniss der 
Organisation fossiler Spongien. Abh. bayer. Ak. xii. 3, pp, 1-80, 
pis. i.-vii. (Abstr. JB. f. Mineral, xliv. pp. 578 & 579.) 
CodoptycMum is an upper cretaceous representative of the Hexactinel- 
Udce ; its sarcode spicules belong to many types, some apparently belong- 
ing to the Lithistidce, others to the Pachytragidce, and possibly indicate a 
relationship between the older members of these groups. (A preliminary 
notice of Zittel’s researches on fossil Hexactinellidce and Radio laria, JB. f. 
Mineral, xliv. pp. 286-289 ; cf. also Z. geol. Ges. xxviii. pp. 631 & 632. 
SoLLAS, W. J. On Eubrochus clausus, a vitreo-hexactinellid Sponge 
from the Cambridge “Coprolite” bed. Geol. Mag. (2) iii. 
pp. 398-403, pi. xiv. 
