Anatomy and Classijication of the Order Lyomeri, 347 



EXPLANATION OF THE PLATES. 

 Plate VIII. 



Fiff, 1. Stromatopora concentrica, Goldfuss, from Devoniau of Gcrolsteiu. 



Wall of a chamber, showinjf tubuli. X 3:25. 

 Fill. 2. Larger tubiili from an older wall. X 550. 

 Fig. 3. Hoops and coils in chambers and canals of S. concentrica. 



3 a. Ditto from Actinostroma clathratum, Nich. Both 



X 1300. 

 Fi{i. 4. Ditto from sarcode of rohjtrema cylin^ricum, Carter. X L300. 

 Fig. 5. Part of wall of chamber of Evzoon ccmadense, Dnwson, from 



Lower Laurentian limestones, Burgess, Canada, showing 



mural pores and tubuli. X 140. 

 Fig. 6. The same. X 550. 



Fig. 7. Old branching canals in Fozoon. X 1300. 

 Fig. 8. Branching system of canals in Eozoon. X 35. 8 a. The same 



showing hoops. X 3:25. 

 Fig. 9. Hoops and coils in chambers and canals of Eozoon. X 1300. 

 Fig. 10. The same from another specimen, x 1300. 



Plate IX. 



Fig.W. Canals in ^0200??. X 140. 



Fig. V2. Eozoo7i. Young chambers forming just below surface of speci- 

 men, a, mural tubuli ; i, diaphragm across opening in 

 chamber. X 140. 



Fig.\2x. Series of yonng chambers. X 50. 



i-V^. 12 b*. Minute Foraminiferan found in one of the chambers of 

 Eozoon. X 190. 



Fig. 13. Vertical longitudinal section of Folytrema cylindricuvi, Carter. 

 X 12. 



jp/y. 14. Wall of chamber of same, showing branching tubuli. X 100. 



Fig. 15. Caunopora tube in Stromatopora bilcheliensis, Bargarzky, Devo- 

 niau, showing Spioniform worm inside, a, acicula. X 35. 



Fig. 16. Another Caunopora tube from same section, showing surface 

 anuulations of annelid inside. X 17. 



XLVI. — The Anatomy and Clossifieation of the Telcostean 

 Fishes of the Order Lyomeri. By C Tate RegAN^ M.A. 



(Published by permission of the Trustees of the British Museum.) 



Order LYOMERI. 



Scaleless soft-rayed fis])es witli a long slender tail, dorsal 

 and anal fins long, no caudal, pectorals (when present) small 

 and pelvics absent. Gill-oi^enings small_, separate. Mouth 



* The discovery of the beautiful little coiled shell (fig. 12 b) in one of 

 the chambers of Eozoon ca)iadeni<e settles the " Eozoon controversy " 

 beyond the possibility of further dis])ute. I do not think that the shell is 

 a yonng stage of Eozoon, but rather that it has been ingested as food from 

 without. 



24* 



