76 



NEW YORK STATE MUSEUM 



much as 15 mm in length and these larger specimens are cylindrical 

 in outline. While completely flattened out, the roundish aperture 

 at one end and the thickened lateral margins demonstrate that the 

 bodies were originally tubular and rather thick-walled. The 

 proximal end fades out in most specimens; in many others it is 

 jagged as if broken off and in a few it contracts to a blunt point. 

 The long tubular specimens show no appreciable contraction at 

 either end. 



Fig. 8 



Fig. 9 



Fig. 12 



Fig. II 



•?v 



Fig. 10 



Fisf, 



Cyathodictya ? tubularis nov. 



Fig. 8. Group of specimens of usual size. Natural size. Fig. 9. Group 

 of large specimens. Natural size. Fig. 10. Specimen showing aperture, x 5. 

 Fig. II. Specimen showing spicules, x 5. Fig. 12. Fairly perfect specimen. 

 Type, X 5. 



Canajoharie shale at Canajoharie, N. Y. 



The substance of the fossil is preserved and this as well as the 

 thick margins show the walls to have been quite substantial. 



We have referred this gregarious organism with doubt to \ 

 Cyathodictya largely on account of the form and thick walls of the 

 bodies. Owing to their small size we have not been able to satisfy 

 ourselves as to the presence of spicules although delicate lines sug- 

 gesting these are seen in some places on the walls, the longitudinal 



