[DAW60NJ FOSSIL SPONGES AND OTHER ORGANIC REMAINS 



109 



Family DicTyoF?oNorD^, ITull. 



Genus CYATHCPTIYCUS, #aleott. 



8.— CYATriopiiYcus QuEBECENSE, Dawson. 



(Figs. 18 and 19.) 



Fig. IS.-CjfathophycxM Quebecense. Fi„ ,0 f\.Z*i i ^ . 



Restored. > ^^^- ^^--Cyathophycua QueMcfMse. 



T, ' Base enlarged. 



veJZZ -f 7'''"^ "'Tl"\ '""^P"'"^ apparently of numerous long, 

 ver , al spicules, crossed by horizontal or annular bars, and with a few 

 cruciform spaculcs „, the meshes. Tl,e vertical and trlnsverse spicules 

 may be cruciform spicules arranged vertically. The form terminates 



tzz Tw ^"'r-T'' '■"''^^^*'""^ ''"^ ^'-«^--^ ^^^~ 



WatoTt frim th?Tir ^'^^f ^""""" Cv-fnophycus reticulatuu of 

 Walcott f^^om the Utica shale, but differs in detail, especially in the sim- 



t^^: '"■?"' ''■'' ^"' development of the'tra'n sverse or drcZ 

 bais. Ihe largest specimens are 8 cm. long by 3 wide at top There are 

 signs of minute lateral defensive spicules. The general form and strue 

 ture resemble those of the modern sponges of th^ genus HolaJs. 



I changed the generic name to Cyathospongia in my paper of 1889 

 as the termination seemed incorrect: but this name seems to have been 

 pre-occupied by Prof. Hall. I therefore leave it in the originalform 

 until amended by the author. ^ 



The sponges of the genus Cyathophycus are not abundant in the 



Sec. IV., 1896. 7. 



