208 



NEW YORK STATE MUSEUM 



Remarks. I have here united forms which have passed under three 

 different generic and four specific names, although in part the evidence is 

 only indirect. Rastrites barrandii has been recognized as a Tham- 



Fig. 108-13 Thamiiograptus capill.iris (Emmons). Fig. 108 Copy of Emmons's original figure of 

 N e m a g r a p s u s c a p i 1 1 a r i s. Fig. 109, 110 Copies of Hall's figures i't T li a 111 n o g ra p t u s typus. Fig. in 

 Copy of Hall's figure of Thamiiograptus capillaris. Fig. 112 Copy of Hall's figure of Rastrites 

 barrandi. Fig. 113 Drawing of Nemagrapsus capillaris from Stockport, N. Y. by Gurley. (x a) 



nograptus by Lapworth and been found directly attached to stipes of T. 

 capillaris Hall, by the writer [see pi. 10, tig. 7 1. The latter form, 

 though differing much in its finer habitus from T. typus. is still con- 

 nected to it by intermediate fragments, which show that all are parts of the 



