2 Por. 
III. Porifera or Spongida. 
[1920] 
I.— TITLES. 
Annandale, N. Observations on 
Physa prinsepii Sowerby and on a 
Clionid Sponge that burrowed in its 
shell. Calcutta Rec. Geol. Surv. 51 
1920 (50-64) pis. iv & v. 1 
Babi6, K. Zur Konntniss der Theneen. 
Zool. Jahrb. Jena Abth. Syst. 40 1916 
(389-408) pis. xvi-xviii. 2 
Bidder, G. P. The fragrance of 
Calcinean sponges. London Abstr. 
Proc. Linn. Soc. 375 1920 (2 & 3). 3 
Bidder, G. P. The fragrance of 
Calcinean sponges and the spermatozoa 
of Ouancha and Sycon. London J. Linn. 
Soc. Zool. 34 1920 (299-304) pi. xxiv. 4 
Bidder, G. P. Notes on the physio- 
logy of sponges. London J. Linn. Soc. 
Zool. 34 1920 (315-326) and in Abstr. 
Proc. Linn. Soc. 375 1920 (2 & 3). 5 
Clarke, J. M. Devonian glass sponges. 
New York State Mus. Bull. No. 196 
1917 (1918) (177-198) pis. i-vi. 6 
Clarke, J. M. Armstrongia, a new 
gonus of Dovonian glass sponges. Now 
York State Mus. Bull. Nos. 219-220 
1919 (1920) (143-146) 1 pi. 7 
Clarke, J. M. The great Glass -Sponge 
colonies of the Devonian ; their origin, 
rise and disappearance. J. Geol. 
Chicago 28 1920 (25-37). 8 
Cunnington, W. A. The fauna of the 
African lakes ; a study in comparative 
imnoiogy with special reference to 
Tanganyika. London Proc. Zool. Soc. 
1920 (507-622). 9 
Dettmer, E. Die Spongites saxonicus- 
Frage. Dresden S.B. naturwiss. Ges. 
Isis 1913 1914 (50-54). 10 
Gatenby, J. B. The germ -cells, 
fertilization and early development of 
Qrantia (Sycon) compressa. London J. 
Linn. Soc. Zool. 34 1920 (261-297) 
pis. xix-xxiii. 11 
Gatenby, J. B. Further notes on the 
oogenesis and fertilization of Orantia 
compressa. London J. R. Microsc. Soc. 
1920 (277-282) pi. v. 12 
Hallmann, E. F. New genera of 
Monaxonid sponges related to the 
gonus Clathria. Sydney Proc. Linn. 
Soc. N.S.W. 44 No. 176 1919 (1920) 
(767-792) pis. xxxvi-xl. 13 
Krecker, F. H. Caddis -worms as 
agents in distribution of freshwater 
sponges. Ohio Journ. Sci. 20 1920 (355). 
14 
Lameere, A. Les feuillets dcs 
Spongiairos. Bruxelles Ann. Soc. Roy. 
Malacol. Belg. 50 1920 (49-52). 15 
Musper, F. Der Bronztaloolith, sein 
Fossilinhalt und seine Deutung. Stutt- 
gart Jahresh. Ver. Wiirttemb. 76 1920 
(1-61). 16 
O’Connell, Marjorie. The Schrammen 
Collection of Cretacous Silicispongiae 
in the American Museum of Natural 
History. Now York Bull. Amer. Mus. 
Nat. Hist. 41 1919 (1-262) pis. i-xiv. 17 
P6rez, C. Association ot reactions 
mutuelles d’une Tubulaire et d’une 
epongo. Paris C. R. Soc. biol. 83 1920 
(835-837). 18 
Renouf, L. P. A contribution to our 
knowledge of the Fauna of the Clyde 
sea-area. Glasgow Naturalist 8 1920 
(113-119). 19 
Richardson, L. and Thacker, A. G. 
On the stratigraphical and geographical 
distribution of the Sponges of the 
Inferior Oolite of the West of England. 
London Proc. Geol. Assoc. 31 1920 (161— 
186) pis. xii & xiii. 20 
Schondorf, F. Der geologische Bau 
der Gehrdener Berge bei Hannover. 
Hannover Jahrb. Naturhist. Ges. 62-68 
1919 6te Ber. geol. Abth. (70-91). 21 
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