BY DR. R. VON LENDENFELD. 147 



(123), Schultze (124), Sollas (125), Keller (126), Wyville Thomson 

 (127), Marshall (128), Bowerbank (129), D'Urban (130), 

 Dylowsky (131), Vosmaer (132), Ridley (133), Potts (134), 

 Haswell (135),Lendenfeld (136), Chilton (137), Hilgendorf (138), 

 Retzer (139), Vejdovsky (140). 



Metschnikoff (141) dwells on the systematic position of the 

 Spongidae, and comes to the conclusion that their Embryology and 

 Histology prove their relationship with the Hydrozoa, but that 

 they are not so highly organised as these. 



(123). W. Czerniavsky. Spongia littorales marium pontici et caspii. Bull. 

 Soc. Imp., Moscow, 1879-80. 



(124). F. E. Schulze (1. c.) 



(125). N. Sollas (1. c.) 



(126). C. Keller (1. c.) 



(127). Wyville Thomson. The Voyage of the Challenger, London, 187S. 



(128;. W. Marshall. Ideen iiber die Verwandtschaftsverhaltnisse der 

 Hexactinelliden . Z. f. w. Z., Band, XXVII., p. 113. Untersuchungen iiber 

 Dysideiden und Phoriospongien. Z. f. w. Z. Band, XXXV., p 88. Ueber 

 emige neue Kieselsehwdmme aus dern Congo. Jen. Zeitsch. Band XVI., 

 p. 553. 



(129^. Bowerbank (1. c.), Monaqraph of the siliceo-fibred sponges. Proc. 

 Zool. Soc, 1875, p. 272; 1875, p. 503; 1875, p. 558; 1S76, p. 535. A 

 Monograph of British Spongiadea, Vol. IV. Ray. Soc, London, 1881. 



(130). W. D'Urban. The Zoology of the Barents Sea. Ann. Mag. (5). 

 VI., p. 253. 



(131). Djdowsky. Studien iiber die Spongien des russischen Reiches etc. 

 Mem. Acad. Imp. Petersb., VII., Serie, XXVII. , No. 6. 



(132). G. Vosmaer. The Sponges of the Leyden Museum, 1. Notes from 

 the Le} r den Museum, II. Note 13, 99. Voorlap Berigt amtrent het onder- 

 zock Werktafel in het Zool. Stat, de Naples. Report on the sponges dredged 

 up in the Arctic Sea by the " Willem Barrents." Niederl. Arch. f. Zool. 

 Suppl., Band, I. 



( 133). O. Ridley. Account of the Zoological Collection made during the 

 Survey of H.M.S. Alert. Spongida. Proc. Zool. Soc, 1881, 107. Sponges 

 of Franz-Josefs-Land. Ann. IVlag. (5), Vol. VII., p. 455. 



(134). E. Potts. Sponges from the neighbourhood of Boston. Proc. Soc, 

 Acad. Nat , Philadelphia, 1882, p. 69. 



(135). W. Haswell. On Australian freshwater sponges. Proc Lin. Soc, 

 N.S.W. Vol. VII., p. 208 



(136J. R. von Lendenfeld (1. c) 



(137). Ch. Chilton. A New Zealand freshwater sponge. New Zealand 

 Journal of Science, Vol. I., p. 183. 



(13S). T Hilgendorf ^iisswasser-Schwamme aus Centred Africa. Sitzber. 

 Ges. Nat. Tr., Berlin, 1883, Seite, 87- 



(139). W. Retzer. Die DeutschenSusswasser-Schivdmme. Tubingen, 1883. 



(140). T. Vejdovsky. Revisio faunae Bohcemicce. Prag, 1883. 



(141). E. Metschnikoff. Spongiologische Untersuchungen. Z. f. w, Z. 

 Band, XXXII. Seite, 374, ff. 



