8UBH 



HYDEOZOA CAMPANULABIAE 



i. Lonsd. (Fig. I'.*'.*), and /'/'"/"//v, IJargat., arc St romatoporoids 

 which are indistinguishable t'r.in other species except by the presence of 

 numerous definitely walled tubes penetrating the coenosteum at closer or 



:iiii<ti>iiiii-n lulu i-i'ii!tii, Nidi, Di vonian 

 (Cornit'.Tous limestone); Jams, Ontario. 

 Natural si/e (after Nicholson). 



Km. 1 '."'.'. 



Caunopora /i/c<r//^i, Phill. Devonian; Torquay, 

 Devonshire. .-I, Tangential section, natural size. 

 /;, The same, highly magnified ; a, Vertical " Cauno- 

 1 ira tube"; //, Canal partially cut into; c, Calcar- 

 eous fibres traversed by delicate ramifying canalk-uli. 

 <', Vertical section, highly magnified. 



remoter intervals. The tubes are often thick -walled, are furnished with 

 horizontal or funnel-shaped tabulae, and occasionally with septal spines ; in 

 many cases they evidently represent the corallites of Aulopora and Syringopora 

 colonies, which have become enveloped, but have continued to live commensally 

 within the tissues of the Stromatoporoid. In other 

 . however, the tubes appear to have been formed 

 by true Stromatoporoid polyps. Devonian. 



Hermatosfroma, Nich. (Fig. 200). Massive or 

 foliaceous skeletons, composed of thick parallel lati- 

 laminae, connected by vertical pillars ; pillars often 

 running continuously through several concentric 

 laminae. Both pillars and laminae exhibit a dark 

 median line when viewed in cross-section, indicating 

 either the presence of axial canals or composition 

 out of two lamellae. Devonian. lamin:i <"i>osed of two slightly 



... . ... . T -i i separated lamellae ;, Intel-laminar 



Idwstroma, Winch. Coenosteum cylindrical or chambexiet ; c, Badfci puiar tm- 



fasciculate, traversed by axial, tabulate zooidal tubes, v 



which give off secondary lateral tubes. General tissue reticulated, similar to 



Xfruiinifojiorri. \ )e\ onian. 



Stylodictyon^ Stromatdporella, and Syringostroma, Nich.; Amphipont, Schulze ; 

 ^fiirlit/Htlcx, Bargat. Devonian of Europe and North America. 



A number of genera are described by Waagen and Wentzel from the 

 Permo-Carboniferous rocks of Farther India, such as Carteriiw, Di.*jcctjM>ri', 

 ( 'im>jn-n t etc. 



I-'HJ. 200. 



Order 4. CAMPANULARIAE. Allman. 

 (Leptomediisae, CalyptoUastea, Allman ; Thecuphora, Hincks.) 



-, In-" in-/t in ;r, i>lmd-like, sessile colonies, with chitinous periderm 

 tin' /y^.sr, pt'iliittr/i; mill u/m, Um cup-Hh receptacles (liydrothecae) which enclose the 



VOL. I I 



