130 



NEW YORK STATE MUSEUM 



Family monograptidae Lapworth 



Genus monograptus Geinitz 

 Monograptus clintonensis ( Hall) 

 M. priodon (Bronn) mut. chapmanensis nov. 

 M. beecheri Girty 



Genus cyrtograptus Carruthers 

 Cyrtograptus ulrichi sp. nov. 



Family retiolitidae Lapworth 



Genus retiograptus Hall 

 Retiograptus geinitzianus Hall 



Genus retiolites Barrande 

 Retiolites geinitzianus Barrande var. veno- 

 sus Hall 



Genus lasiograptus Lapworth 

 Lasiograptus mueronatus ( Hall) 

 L. bimucronatus Nicholson mut. 



timidus nov. 



SYNOPTIC AND SYNONYMIC LIST OF THE GRAPTOLITES RECORDED 



FROM NORTH AMERICA 



The forms occurring in New York State are distinguished by an 

 asterisk. Synonyms are printed in italics. The genera are arranged 

 alphabetically within the three orders, here recognized. 



Order i DENDROIDEA Nicholson 



Acanthograptus Spencer, 1878 

 granti Spencer, 1878 

 pulcher Spencer, 1884 

 *walkeri (Spencer), 1884 

 Cactograptus Ruedemann, 1907 



*crassus Ruedemann, 1907 

 Callograptus Hall, 1865 



*compactus (Walcott), 1879 

 *diiTusus (Hall), 1865 

 elegans Hall, 1865 

 granti Spencer, 1884 

 minutus Spencer, 1884 

 multieaulis Spencer, 1884 

 niagarensis Spencer, 1878 

 *salteri Hall, 1865 

 Calyptograptus Spencer, 1878 

 cyathiformis Spencer, T878 



C. micronematodes Spencer, 1884 

 radiatus Spencer, 1884 

 *suhretiformis Spencer, 1878 

 [see Dictyonema] 

 Cyclograptus Spencer, 1884 



*rotadentatus Spencer, 1884 

 Dendrograptus Hall, 1865 

 *arundinacens (Hall) Gurley 



[see Mastigog.] 

 *compactus Walcott, 1879 

 [see Callog.] 

 dawsoni Spencer, 1SS4 

 *diffusus Hall, 1865 

 [see Callog.] 

 divergens Hall, 1865 

 dubius Miller, 1889 

 erectus Hall, 1865 



