Pr.ATR I. 



Figure 1. Conularia gracilis, Hall. Utica slate, Dolgeville, X. Y., with attached young, a, wall 

 pressed out; l>, transverse striatiou of groove; c, apertural process of wall; .«, sculpture of surface 

 discernible, x 2. 



Figure 2. C. gracilis, with attached young. », fragments of sculptured wall. x2. 

 Figube 8. Young C. gracilis, with four distinct edges, attached to an older shell. x2. 

 Figure 4. Detached specimen of C. gracilis, s, surface film. x2. 



Figure 5. Group of very young specimens of Conularia cf. gracilis, Hall, attached to a shell 

 fragment. x2. 



Figure (i. 0. gracilis. Fragment of the wall. x 2. 



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