548 NEW YORK STATE MUSEUM 



Climacograptus bicornis Hall 



Page 433 



24 Typical specimen preserved in relief ' 



Normanskill shale, Kenwood, N. Y. 



25 Large rhabdosome showing most common form of appendage of sicular 



extremity 



26 Specimen, presenting peculiar, deeply notched aspect (subscalariform 



view), due to oblique compression 

 Normanskill shale, Glenmont, N. Y. 



Climacograptus cf. oligotheca Gurley 



Page 441 



27 Well preserved specimen, showing form of thecae and broad straplike 



nemacaulus 



Normanskill shale, Novaculite region of Arkansas 



Climacograptus antiquus Lapworth 



Page 439 



28, 29 Two characteristic specimens showing the form of the rhabdosome 

 and the broad nemacaulus 

 Talihina formation, Indian Territory 



Climacograptus modestus sp. nov. 



Page 432 



30 Typical specimen (cotype) 



Normanskill shale, Mt Moreno near Hudson, N. Y. 



Climacograptus scharenbergi Lapworth 



Page 428 



31 Well preserved shale specimen 



Normanskill shale, Mt Moreno near Hudson, N. Y. 



