160 DlCTYOSPONGID^. 



Dimensions. The largest and best preserved of the three specimens had 

 a length of 300 mm., which must be considerably less than its original length, 

 as parts are lacking at both extremities. Its width at the base is 50 mm,, 

 across the first annulation 115 mm., and at the top 100 mm. 



Ziocality. In the Psammites du Condroz, Jeumont, Brittany. 



