LITERATURE OF THE PORIFERA 165 



Scluilze, Metschiiikoll', liariois, Keller, Schmidt, and many others ; in i)hysiology, 

 Lieberkiihn, Metsehnikoti", Lendenfeld, etc. ; for the classification and system 

 Gray, Bowerbank, Schmidt, Topsent, Lendenfeld, and Breitfuss ; and in 

 palaeontology, the works of Hindc and Zittel. Full bibliograpliies are given 

 by Vosmaer [29 and 30], Lendenfeld [9], RautV [19], and Weltner [31], and 

 references to recent literature will be found in the Zoological Record, published 

 by the Zoological Society of London, and in the Bihliographia Zoologka, edited 

 by Victor Carus, and published with the Zoologischcr Anzeigcr (Leipzig, W. 

 Engelraann). 



L Bidder. The Skeleton and Classification of Calcareous Sponges. (Proc. 

 Roy. Soc, 64, 1898, pp. 61-76.) 



2. Delage. Embryogenie des Eponges. (Arch. Zool. Exp. (2), x. (1892), pp. 



345-498, pis. xiv.-xxi.) 



3. Sur la place des Spongiaires dans la Classification. (C. R. Ac. Sci. 



Paris, vol. cxxvi. (1898), pp. 545-548.) 



.^4. Deiuly. Monograph of the Victorian Sponges L (Tr. Roy. Soc. Victoria, 

 in. (1891), pp. 1-81, xi. pis.) 



5. Studies on the Comparative Anatomy of Sponges, V. Calcarea Hetero- 



ctela. (Quart. Journ. Micr. Sci., N.S. vol. xxxv. (1893), pp. 159-257, pis. 

 x.-xiv. ) 



6. Dodcrlein. Ueber die Lithoninre. (Zool. Jahrb., Abth. f. Syst. etc., x. 



(1897), pp. 15-32, pis. ii.-vi.) 



7. Haeckel. Die Kalkschwiimme. (3 vols. Berlin, 1872.) 



--8. Deep Sea Keratosa. (Challenger Reports, Zooh, vol. xxxii. 1869.) 



9. Lendenfeld. Monograph of the Horny Sponges. (London, 1889. ) 



10. Loiscl. Contribution a I'histo-physiologie des eponges. (Journ. de I'anat. 



et de la physiol., xxxiv. (1898), pp. 1-43 and 186-234, pis. i. and v.) 



11. Maas. Embryonal-Entwickelung, etc. , derCornacuspongien. (Zool. Jahrb., 



Abth. f. Anat., etc., vii. pp. 331-448, pis. xix-xxiii.) 



12. Ueber die erste Differenzierung von Generations und Somazellen bei 



den Spongien. (Verb, deutsch. Zool. Ges., 1893, pp. 27-35.) 



13. Die Keimblatter der Spongien, etc. (Zeitschr. f. w. Zool., Ixiii. (1898), 



pp. 665-679, pi. xli.) 



14. Die Entwickelung der Spongien. (Zool. Centralblatt V., 1898, 



PI). 581-599.) 



15. Ueber Reifung und Befruchtung bei S^wngien. (Anat. Anzeigcr, 



1899.) 



'16. Minchin. The Position of Sponges in the Animal Kingdom. (Science 

 Progress, N.S. L (1897), pp. 426-460.) 



17. Materials for a Monograph of the Ascons L (Quart. Journ. Micr. 



Sci., N.S. xh, 1898, pp. 469-587, pis. xxxviii.-xlii.) 



18. FoUjttxff. Calcarea. (Challenger Reports, Zool., vol. viii., 1883. ) 



19. Banff. Palfeospongiologie. (Palreontographica, xl. pp. 1-346, pis. i.-xvii. ; 



and xli. pp. 223-272, pis. xx.-xxvi.) 

 -20. Bidley and Uemly. Monaxonida. (Challenger Reports, Zool., vol. xx.) 

 21. Schulze. Hexactinellida. (Challenger Reports, Zool. , vol. xxi.) 

 22. Symmetrieverhaltnisse bei.Hexactinelliden-Nadeln. (Verh. deutsch. 



Zool. Ges., 1897, pp. 35-37.) 

 23. Zur Histologic der Hexactinelliden. (Sitzber. Akad. "\Vi.ss., Berlin, 



xiv., 1899, pp. 198-209.) 



