2 Por. 
[1922] 
HI. Porifera or Spongida. 
13. — Reis, O. M. Ober Bohrrohren 
in fossilen Schalen und fiber Sponge- 
liomorpha. Zs. D. geol. Ges. A 73 1922 
pp. 224-237 1 pi. 2 text-figs. 
14. — Schulze, P. Einige neue 
Methoden fur das Zoologischo Prakti- 
kum. SitzBer. Ges. natf. Freunde 
Berlin 1921 pp. 51-53. 
15. — Schulze, P. Ueber die Bildung 
des Spongiolins bei den Sfisswasser- 
schwammen. Zool. Anz. Leipzig 55 
1922 pp. 213-215. 
16. — Smith, F. Distribution of the 
fresh-water sponges of North America. 
State of Illinois Dept. Registration and 
Education. Nat. Hist. Survey Urbana 
111. Bull. 14 1921 pp. 13-22. 
17. — Smith, F. A new locality for 
Spongilla wagneri Potts. Trans. 
Amer. Microsc. Soc. Wisconsin 41 
1922 p. 106. 
18. — Stefani, C. de. Silicospongie 
fossili nella Liguria occidentale. Con- 
clusion! e fine. Atti Acc. Lincei Roma 
31 Sem 1 1922 pp. 3-4. 
19. — Tattersall, W. M. Sponges, 
Polyzoa, Hydroids and Crustacea from 
Lancashire and Cheshire. Lancs. Ches. 
Nat. 14 1921 pp. 71-73. 
20. — Thiele, J. Ueber das System 
der Demospongien. Zool. Anz. Leipzig 
53 1921 pp. 28-30. 
* 21. — Thomas, A. O. A fossil burrow- 
ing Sponge from the Iowa Devonian. 
Bull. Lab. Nat. Hist. Iowa 6 No. 2 
1911 pp. 165-168 1 pi. 
22. — Topsent, E. Les megascl^res 
polytylotes des Monaxonides et la 
parente des Latrunculiines. Bui. 
Inst. Ocean. Monaco No. 415 1922 
pp. 1-8 1 fig. 
23. — Topsent, E. Sur Stelletta 
crassispicula Sollas et son synonyme 
Stelletta crassiclada Lendenfeld. Bui. 
Inst. Ocean. Monaco No. 416 1922 
pp. 1-3. 
24. — Topsent,E. Velinea gracilis Vos- 
maer et ses affinit6s. Bui. Inst. Ocean. 
Monaco No. 417 1922 pp. 1-5 2 figs. 
25. — Vorstman, A. Sponzen. Flora 
en Fauna Zuiderzee (Ned. Dierk. Ver. 
Rotterdam) 1922 p. 184. 
26. — Wilson, II. V. The genus 
Raspailia and the independent varia- 
bility of diagnostic features. J. Elisha 
Mitchell Sci. Soc. Chapel Hill 37 
1921 pp. 54-60. 
II.— SUBJECT INDEX. 
General Economics and Technique. 
Museum Collections. — Garcia, 9. 
Technique. — Schulze, 14. 
General Anatomy. 
Spicules. — Chapman, 6; Dendy, 8; 
Moret, 13; Topsent, 22 & 24; Wil- 
son, 26. 
Histology. — Schulze, 15. 
Physiology. 
[Vacant.] 
Reproduction and Development. 
[Vacant.] 
Ethology. 
Commensalism. — Gravier, 10. 
Variation, Phylogeny. 
[Vacant.] 
Distribution (Geography). 
Geographical — Europe : Babi6, 2-4 ; 
Tattersall, 19. Asia : AnnaNdale, 
1. America : Smith, 16 & 17. Indian 
Ocean : Dendy, 8. 
Geological. — Tertiary : Stefani, 18. 
Secondary : Moret, 12. Primary ; 
Holtedaiil, 11 ; Thomas, 21. 
III.— SYSTEMATIC. 
Calcarea. 
[Vacant.] 
Non-Calcarea. 
(a) Myxospongida. 
[Vacant.] 
(b) Hexactinellida. 
[Vacant.] 
