BrBLIOORAPHY. 



1887. 



47 



23. George J. Hinde. A Monograph of the Bntinh FohhU Spongm, Part 1, 



pp. 1-92, ph. i^iii. 



The author erects the family Pi{oto8ponoiij.e as a member of the order 

 Dictyoiiina. It is made to inchide Pkotosponoia, Salter, Pjiokmohella and 

 Plectodebma, Hinde, " and possibly also some of the fonns included under 

 Dictyophyton, Hall " (p. 90). It is also observed that " by some authors the 

 spicules are believed to be free from each other and thus of a Lyssacine 

 character." On plate ii, are given figures (4, a-c) of Divtuophijton [Dktyo- 

 spongm^ Danhyl, McCoy (sp.), from the Ludlow beds of Westmoreland. 



24. James Hall. iVbfe on the Oanvrrence of the Dictyospfmgidm in the State 



of New Yorh. (Sixth Ann. Rept. N. Y. State Geologist, pp. 36-38, 

 map.) 

 Gives a table showing the distribution of the American species and' a 

 map exhibiting the geographical occurrence of specimens in western New 



York as known at that date. 



1887. 



25. F. E. ScHULZE. Report on tlie Heooactinellida collected hy H. M. S. 



Cftallenger during the years 1873-1876, p. 63. 



Reference is made to the determinations and suggestions by Whh'field 

 and Dawson as to the hexactinellid structure of some of the DictyospongidvE, 

 and the announcement Ijy Walcott of the spongous character of Cyathopiiy- 

 cus. These forms are considered as " fossil Euplectellid^." 



1888. 



26. J. W. Dawson. New Species of Fossil Sporujes from Little Metis, 



Province of Quebec, Canada. (Canadian Record of Science, April, 

 pp. 49-59.) 



The substance of this paper is included and expanded in No. 30, with 

 similar observations upon Dictyophyton. 



27. George J. Hinde. Notes on Sponges from tJie Quebec group at Metis 



and from tlie Utica slude. (Canadian Record of Science, April, 

 pp. 59-68.) 

 The author remarks that both names Cyatiiophycus and Dictyophy- 

 ton, are unsuitable for sponges and that it might prove advisable to reinstate 

 the name Hydnocekas, Conrad. 



