5 Por. 
Subject Index. 
Division of collar cells, Clathrina 
coriacea ; Robertson & Minchin, 25. 
Regeneration of epidermis, Sti/lo- 
tclla ; Wilson, 43. 
Development of sponges from tissue 
cells outside the body ; Wilson, 44. 
Regeneration, Chondrosia reniformis ; 
Maas, 20. 
Asexual reproduction, Porifera » 
Korschelt & Heider, 15a. 
ETHOLOGY. 
Spongilla spp. living in deep water 
in plains, found in shallow Water in 
mountains ; Zschokke, 45. 
Symbiose entre une eponge et des 
algues ; Weber-Van Bosse, 36. 
Degeneration, Symbiose mit roten 
Algen, Clathrinidae ; Urban, 35. 
EVOLUTION, INHERITANCE, 
VARIATION. 
Phylogenie der Spicula (Russ.) ; 
Kudelin, 16. 
Phylogony of Hoxactincllid spicules ; 
Kirkpatrick, 11. 
GEOGRAPHY. 
A. Actual. 
Means of transmission of freshwater 
sponges, bearing on existence of former 
land bridge between N. Europe and 
N. America ; Scharff , 26. 
Distribution of Chondrosia plebeja ; 
Kirkpatrick, 14. 
European seas and fresh waters. 
Guernsey, Leuconia jisiulosa recorded 
from; Sharp, 31. 
Guernsey, Porifera, additions to 
list ; Sharp, 30. 
Schwarzes Meer, Monaxonidae 3 spp. 
n. ; Kudelin, 16. 
Asia, freshwaters and coasts. 
China, Spongilla sp. n.; Annandale,4. 
Ceylon, Spongilla prolijerens 
Annandale, 3. 
S.W. China, Spongilla 2 spp. n.; 
Annandale, 2. 
Cape Comorin, Spongilla sp. n. ; 
Annandale, 1. 
Antarctic Ocean. 
Geographical Distribution of Ant- 
arctic Hexactinellida discussed ; Schulze 
& Kirkpatrick, 29. 
Antarctic, Hexasterophora 7 spp. 
n. ; Topsent, 34. 
Antarctic, Hexactinella 7 spp. n. ; 
Schuke & Kirkpatrick, 28. 
Atlantic Ocean. 
N. Atlantic, Halichondrina 57 spp. 
n. ; Lund beck, 18a. 
St. Helena, Chondrosia plebeia; Kirk- 
patrick, 14. 
Pacific Ocean. 
Erglidae 4 spp. n., discussion of 
distribution of Erylidae within the 
Pacific area ; Lendenfeld, 18. 
Oeodidae 15 spp. n., discussion of 
distribution of Geodidae within Pacific 
areas ; Lendenfeld, 19. 
Australian seas and freshwaters. 
Christmas Island, Pharetronid sp. n. ; 
Kirkpatrick, 12. 
Australia, Spongillidae list, and West 
Australia, Ephgdatia sp. n. ; Weltner* 
40. 
B. Fossil. 
Upper Cretaceous, N.W. Germany, 
Tetraxonia Choristida 4 spp. n., Lithi- 
stida 58 spp. n., Monaxonia 3 spp. n., 
Silicea incert. sedis 5 spp. n. ; Schram- 
men, 27. 
Cretaceous, Daghestan Porifera 12 
spp. ; Renngarten, 24. 
Greensand of Essen, 9 spp. n. ; 
Welter, 37. 
Jurassic, Germany, Tetractinellida 
Lithistida 15 spp. n., Choristida 1 spi 
n., Hexactinellida 3 spp. n. ; Kolb, 15. 
Cambrian, distribution of Archaeo- 
cyathinae in space in middle and lower 
Cambrian S. Australia, 32 spp. n. j 
Taylor, 32. 
