XVII. SP0NGI2E. 
8 Spong. 
: France, Pas de Calais : Topsent (45 ).—Tetractinellida ; Topsent (46). 
North Sea, eastern and south-eastern part : Weltner (50). 
Russia, Jaransk : Spongillidce : Traxler (47). 
Italy : Spongillidce ; Garbini (11, 12). 
Syria : Spongillidce j Barrois (2). 
India, Gulf of Manaar .* Thurston (43). 
Japan, Sagami Bay : Hexactinellida ; Ijima (21). 
Australia, Port Phillip Heads : Non-Calcarea ; Bendy (7). 
New Zealand : Kirk (22). 
b. Geological. 
Jura. — British Isles, Hinde (19). 
Cretaceous. — Bohemia, Frio (10). 
Eocene.— Pom merania, Deeoke (5) ; Ural Mountains, Hinde (20). 
Pliocene. — Italy, Malfatti (30). 
I Y.— SYSTEMATIC. 
a. Classification. 
Topsent (46) gives a revised classification of the Tetractinellida. 
b. Descriptive. 
1. CALCAREA. 
Amphiute , n. g., with A. paulini , n. sp., Sines, Portugal ; Hanitsch, 
Zool. Anz. xvii, p. 433. 
f Blastiuia costata , Goldfuss, redescribed, pp. 246 & 247, pi. xix, figg. 
5 & 5c. B. aspersa, n. sp., Coral Rag, Scarborough, p. 247, pi. xix, 
figg. 6 & 6d; Hinde, Pal. Soc. Mon. 1893. 
t Corynella lycoperdioides , Lamouroux, p. 220, pi. xv, figg. 3 & 37*, re- 
described. f<7. elegaus , Great Oolite, Bath, p. 222, pi. xv, 
figg. 4 & 45, punctata , Inferior Oolite, Cheltenham and Gloucester, 
p. 222, pi. xvi, figs. 3 & 3c, langtonensis , Coral Rag, Langtou Wold, 
Yorkshire, p. 222, pi. xvi, figg. 2 & 2a, chadwicki , Corallian, Malton 
and Yorkshire, p. 223, pi. xv, figg. 6 & 6a, pi. xvi, figg. 1 & Id, 
cribrata , Great Oolite, Bath, p. 224, pi. xvi, figg. 4 & 4/, Hinde, 
Pal. Soc. Mon. 1893, n. spp. 
■[Dlaplectia auricula, Hinde, p. 245, pi. xix, figg. 3 & 3a, redescribed. 
D. infundibulum , n. sp., p. 245, pi. xix, figg. 4 & 4a, Hinde, Pal. 
Soc. Mon. 1893. 
f Elasmostoma palmatum } Great Oolite, Bath, pp. 243 & 244, pi. xvii, 
figg. 9 & 9c, pi. xviii, figs. 1 & la, Hinde, Pal. Soc. Mon. 1893, 
n. sp. 
\Eudca pisum , Quenstedt, redescribed, p. 242, pi. xix, figg. 2 & 25. E. 
waldfordi, n. sp., Inferior Oolite, Bridport, pp. 241 & 242, pi. xix, 
figg. 1 & lc, Hinde, Pal. Soc. Mon. 1893. 
