574 



NEW YORK STATE MUSEUM 



Ineertae sedis : 



Genus strophograptus gen. nov. 

 Strophograptns triclioraancs sj). nov. 



Suborder B GRAPTOLOIDEA AXONO- 

 PHORA Freeh 

 Family dif'logrjss.f'Tidae Lapwortli 



Genns diplograptus McCoy 

 Diplograptus dentatus Brongniart sp. 

 D. inutilis Hall 

 D. laxus sp. nov. 

 D. longicaudatus sj>. nov. 



Genus glossograptus Emmons 

 Glossograptus hystrix sp. nov. 

 G. echinatus sp. nov. 



Genus trigonograptus Nicholson 

 Trigonograptus ensiformis Hall sp. 



Family cLiiviAcoGRAPXiDAEi Freeh 



Genus CLiMACoaRAPTus Hall 

 Climacograptus pungens sp. nov. 



C. ? antennarius Hall 



Genus retiograptus Hall 

 Retiograptus tentjiculatus Hall 



Appendix, graptolithi ineertae sedis 



Genus caryocaris Salter 

 Caryocaris cf. curvilineatus Gurley 

 Genus dawsonia Nicholson 

 Dawsonia monodon Gurley 



D. tridens Gurley 



11 Taxonomic relations of the graptoHtes 



An exhaustive discussion of tlie probable taxonomic relations of the 

 graptolites to other classes of organisms does not lie Avithin the scope of 

 a work on the faunas of a limited district. As the question concerning 

 these relations is however a very pertinent one, and has not since Hall's 

 memoir, been touched in the American literature, we notice here briefly the 

 present status of the problem. 



Hall insisted strongly, as Portlock did before him, on the sertularian 

 affinities of the graptolites. Also the succeeding investigators who made a 

 thorough study of the graptolites, notably Carruthers and Nicholson, 

 maintained the hydroid relations in their publications. Allman, who treats 

 the possible affinities of the graptolites most exhaustively in his Monograpk 

 of the Gymnohlastic Hydroids^ came to the conclusion that "on the whole 

 it would seem that the graptolites constitute a very aberrant hydrozoal 

 group having manifest affinity with the Hydroidea, to which they are 



^Also printed in Ann. and Mag. Nat. Hist, ser 4. 1872. 9 : 364:-80o 



