4 For. 
[1921] 
III. Porifera or Spongida. 
Phlceodictyon nodosum sp. n. p. 152 
pi. lxii figs. 29, 30, 32, pi. lxvi fig. 63, 
George & Wilson Bull. U.S. Fish. 
Bur. 36. 
Phoriospongia osburnensis sp. n. 
p. 154 pi. lxi figs. 24, 25, pi. lxvi fig. 60, 
George & Wilson T.c. 
Reniera tubifera sp. n. p. 145 pi. lvii 
fig. 12, pi. lviii fig. 15, pi. lix fig. 16, 
pi. lxvi fig. 55, George & Wilson T.c. 
t Rhipidotaxis gen. n. Jura, briefly 
diagnosed, but no named species given, 
Oppliger Actes Soc. Helvet. sci. nat. 
101 p. 205. 
■fSubularia gen. n. clavaeformis sp. n., 
Jura, Oppliger T.c. p. 205. 
Tetilla laminaris sp. n., p. 142 pi. lviii 
fig. 14, pi. lix fig. 17, pi. lxvi fig. 54, 
George & Wilson Bull. U.S. Fish. 
Bureau 36. 
Tethya auraniium (Pallas) and 
various species of Lamarck’s, notes on 
synonomy, Topsent Bull. Mus. 1920 
pp. 640-646. 
(iv) Lithistida. 
[Vacant.] 
(d) Euceratosa. 
Airtysilla longispina sp. n. p. 163 
pis. lxiv fig. 42, lxv figs. 45, 48, lxvi 
fig. 64, George & Wilson Bull. U.S. 
Fish. Bureau 36. 
Hircinia ectofibrosa sp. n. p. 166 
pis. lxiv figs. 41, 43 & 44, lxvi fig. 61; 
George & Wilson T.c. 
PleraplysiUa latens sp. n., p. 165 
pi. lxiv fig. 40, George & Wilson T.c. 
