CrtAPTOLTTES OF NEW YORK, PART 1 655 



tion. In regard to the latter feature this species approaches the nepionic part 

 of the branches and thus appears as a more primitive form. It could there- 

 fore be taken for a derivative of T. fruticosus in a state of arrested 

 development, and lacking the tendency to reclination. The dependent posi- 

 tion of the branches in this species is also maintained in its closest genetic 

 relative, D i d y m o g r a p t n s ( i n d e n t n s ) d e n t a t u s . 



Tetragraptus serra Brongniart sp. 



Plate 11, figures 8-1 n 



Fucoides serra Brongniart. Hist. Veget. Foss. 1828. 1:71, pl.6, fig.7, 8 



D i d y m g r a p s u s c a d u c e u s Salter {pars). Qnar. Jour. Geol. Soc. 1853. 9:87, 



fig.la 

 Graptolitlius bryonoides Hall. Geol. Sur. Can. liep't for 1867. 1858. p.l26 

 Tetragrapsus (bryonoides) Salter. Quar. Jour. Geol. Soc. 1863. 19:137, 



lig.8 

 Didymograpsus caducens Salter. Ihid. p. 136 

 Graptolithns bryonoides Hall {pars). Canadian Organic Remains, decade 2. 



1865. p.84, pU, fig.1-8, 11 

 Gr ap tol i thus bryonoides Billings. Geol. Snr. Can. Pal. Foss. 1865. 1:366, 



375 

 Tetragrapsus bryonoides Nicholson. Quar. Jour. Geol. Soc. 1868. 24:131 

 Graptolites (Didymograpsus) bryonoides McCoy. Geol. Sur. Victoria. 



Prodr. Pal. Victoria, decade 1. 1874. p.l5, pi 2, fig.2, 3, 5 

 Tetragraptus quadribracliiatus Etherid^e jr. Ann. and Mag. Nat. Hist. 



8er.4. 1874. 14:3, pl.3, lig.5-8 

 Tetragraptus bryonoides Etheridge jr. {pars) Ibid, p 2, pl.3, tig. 1 

 Tetragraptus serra Hopkinson & Lapwortk. Ihi<l. 1875. 31:650, pi. 33, fig.lO 

 Tetragraptus bryonoides Linnarsson. Sver. Geol. Utid. 1879. Afb. oeli upps. 



ser.C, no.31, p.5 

 Tetragraptus bryonoides Brc5gger. Die sil. Etagen 2 and 3. 1882. p 38 

 Tetragraptus bryonoides Tullberg. Skanes Gi-apt. in Sver. Geol. Und. 1882. 



Afh. och upps. ser.C, no.50, p. 22 

 Tetragraptus serra Turnquist. Sver. Geol. Und. 1883. Afh. och upps. ser.C, 



no. 57, p.l6 

 Tetragraptus serra Herrmann. Geol, Mag ser.3. ISSfi. 3:19 

 Tetragraptus serra Ami. Geol. Sur. Can. Rep't, ser.2. 1889. v.3, pt2, p.ll6k 



