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Carter, H. J.—“On the Nature of the Seed-like Body of Spongilla; 
on the Mother-cell of the Spicule, etc.,” ‘Ann. Mag. Nat. Hist.’ (4), 
vol. xiv, 1874, p.97 (development of the sigmata, anisochele and toxas 
(several in one cell) of Esperella egagropila). 
“‘ Development of Marine Sponges, etc.,” ‘Ann. Mag. Nat. Hist.’ 
(4), vol. xiv, 1874, p. 321 (development of toxas of Esperella 
gagropila and Microciona armata). 
“Further Instances of the Sponge Spicule in its Mother-cell,” 
‘Ann. Mag. Nat. Hist.’ (4), vol. xiv, p. 456 (toxas of Esperella 
wegagropila and Microciona armata in one cell). 
DeiacE, Y.—< Embryogénie des Eponges, etc.,” ‘Arch. Zool. exp. et 
gén.’ (2), vol. x, 1892 (monaxons of Spongilla and Reniera densa 
arise in one cell). 
Denpy, A. (see RipLey anp DENDYy). 
Evans, R.—‘ The Structure and Metamorphosis of the Larva of Spon- 
gilla lacustris,” ‘Quart. Journ. Micr. Sci.,’ N.S., vol. xlii, 1899 
(monaxon of Spongilla arises in one cell). ; 
“A Description of Ephydatia blembingia, etc.,’ ‘Quart. 
Journ. Micr. Sci.,’ N.S., voi. xliv, 1900 (development of Amphidiscs of 
Ephydatia in one cell). 
Gortrr, A.—‘ Untersuchungen zur Entwicklungsgeschichte von Spon- 
gilla fluviatilis,’ Hamburg and Leipzig, 1886 (development of 
amphidise in one cell). 
Igrma, I.—‘* Studies on Hexactinellida: Contribution I,” ‘Journ. Coll. 
Japan,’ vol. xv, 1901 (development of certain hexasters described in 
part). 
“Studies on Hexactinellida: Contribution IV,’ ‘Journ. Coll. 
Japan,’ vol. xvili, 1904 (further examples of scleroplasm associated 
with hexasters). 
Ketter, C.—‘‘ Studien tiber Organisation und Entwicklung der Chali- 
neen,” ‘ Zeitsch. wiss. Zool.,’ vol. xxxiii, 1879 (development of spicules 
of Chalinula fertilis). 
**Die Spongienfauna des rothen Meeres,” ‘ Zeitschr. f. wiss. 
Zool.,’ Bd. lii, 1891 (development of the spherasters of Chondrilla and 
monaxons and sterrasters of Placospongia). 
Kouuiker, A.—‘‘Tcones Histologice,” Abth. i, Leipzig, 1864 (monaxon 
and amphidise of Spongilla described and figured in single cells). 
LEeNDENFELD, R. von.—“ Die Tetractinelliden der Adria, etc.,” ‘Denk. 
Akad. wiss. Wien, Math. naturw. Classe,’ vol. lxi, 1894 (statement 
concerning asters of Geodia and Ancorina), 
