470 Thirty-fifth Report on - the State Museum. 



Surface cancellated by longitudinal and concentric striae which are 

 regularly alternating in three degrees of strength, and with the inter- 

 mediate spaces finely reticulated. The angles of the prism show an 

 expansion or fimbria extending one or two mm. beyond the tube. 



A small specimen has a length of 95 mm., the smallest diameter at 

 the top is 18 mm and the largest diameter is 24 mm. A larger speci- 

 men has a length of 160 mm., and a diameter of 16 mm. at the base, 

 and 26 mm. at the larger end. 



Formation and localities. In the upper part of the Chemung group; 

 numerous specimens have been found near Concord station, Erie 

 county, and Warren, Pa. 



DlCTYOPHYTOK TELUM, U. sp. 



Cup prismatic, small, rapidly enlarging from the base for about 

 one-third of its length, thence gradually attenuating toward the aper- 

 ture, with four scarcely perceptible undulations, transverse section 

 octagonal. Base essentially entire, showing a small cicatrice for at- 

 tachment. Aperture slightly contracted. 



Surface finely reticulate, with a single stronger striation along the 

 middle of each face. Angles well-defined, marked at distant intervals 

 by low scarcely defined nodes which indicate the intersection of stronger 

 transverse striae, giving the appearance of very slight annulations to 

 the prism. 



A small entire specimen has a length of 65 mm., a greatest diameter 

 of 15 mm. and a transverse diameter of 12 mm. 



Formation and locality. In the shaly sandstone of .the Chemung 

 group; Cattaraugus county, N. Y. 



DlCTYOPHYTON FILITEXTILE. 



JDictyophyton filitextile, Hall. Sixteenth Rept. State Cab. Nat. Hist., p. 88, 



pi. 4, fig. 5. 1863. 



Cup cylindrical, tubular, very gradually enlarging from the base 

 upward. 



The striae are sharp, linear, and in three degrees of prominence. In 

 the longitudinal direction there is a very slight angularity, or greater 

 prominence, at regular intervals of every eighth striation. 



The fragment has a length of 65 mm. and a greatest width of 16 

 mm. 



Formation and locality. In a shaly sandstone of "the Chemung 

 group ; Steuben county, N. Y. 



DlCTYOPHYTON IRREGULARE, 11. Sp. 



Cup turbinate, cylindrical. 



Surface coarsely cancellate by transverse and radiating striae, with 

 some remains of several transverse, stronger nodose striae which pro- 



