54-0 NEW YORK STATE MUSEUM 



Diplograptus euglyphus Lapworth 



Page 369 



21 A large rhabclosome 



Normanskill shale, Stockport, N. Y. 



22 Narrower form 



Normanskill shale, Glenmont, N. Y. 



23 Strongly compressed specimen 



Normanskill shale, Speigletown near Troy, X. Y. 



Diplograptus euglyphus var. pygmaeus no v. 



Page 371 



24 Portion of synrhabdosome (holotype). Too wide in reproduction by 



width of outlines 



Normanskill shale, power house at Lansingburg, N. Y. 

 All figures are drawn in natural size. The originals of figures 17 

 and 18 are in the American Museum of Natural History, those 

 of figures 6 and 21 are in the National Museum, the others in 

 the New York State Museum. 



