290 1 )i(rrY()SPON«iD^ 



PLATE XLVI. 



Species from the Psammit^ du Cmidroz, mhmitted ly Professor Ciiaeles 

 Bakrois, of Lille, Frarwe. 



DICTYOSPONGIA, gen. nov. 



Page 72. 

 (See Plates XIV, XV, XVI, XXVII, XXXIII, XXXVI, XXXVIII, XLI, XLII, XLIV, LV, LVI, LXI.) 



DicTTOspoNGiA MoKiNi, Barrois (sp.). 



Page 147. 



Figui'es 1, 2. Views of the original specimen showing the smooth, regularly 

 expanding cup. 

 Psammites du Condroz. Jeurnont, France. 



IIYDNOCERAS, Conrad. 



Page 95. 

 (See Plates II, III, IV, V, VI, VII, VIII, IX, X, XI, XII, XXXHI, XXXVI, XxXVII, XXXVIII, XXXIX.) 



Hydnocebas Babboisi, nom. nov. 



Page 147. 



Figures ?>, 4. The original specimen of IHctyophyton tiiherosiim, Barrois. 

 This is a curved, strongly constricted cup, with moderately strong 

 nodes upon the sharply developed prism-angles. 



Psammites du Condroz. Jeiimont, France. 



Hydnocekas Jeumontense, sp. nov. 



Page 148. 



Figure 5. A specimen with three horizontal rows of nodes and showing very 



gradual expansion of the cup. 

 Figure 6. Another fragment of the same species showing some variation in 



the number of nodes in each horizontal row. An additional piece of 



this specimen increases its length by about 60 mm. and has traces of 



two rows of nodes. 



Psammites du Condroz. Jeiimont, France. 



