PLATE CII. 



Gtrocbras Cyclops. 



Page 387. 

 8«e Plates 101, 103, 104. 

 Lateral view of an imi^rfect specimen, showing the curvature of the tube and the annulations of the internal 

 mould. Several of the foliate expansions of the test are represented extending from the concave dorsal 

 ride into the surrounding matrix. Upper Helderberg lintestone. Helderberg nwu7Uains, N. Y. 



