NEW YORK STATE MUSEUM 



nary Graptolites." It is described as consisting "of a cylindrical chitinous 



tube, tapering towards the base, where it is furnished with two small spines, 



and expanding above into a species of toothed cup." This conception is 



illustrated by the appended figures [see text fig. 123 J copied from the 



Manual. 



Freeh had obviously to base his conception of the genus upon such 



figures only as were extant at the time, and guided mainly by Hopkinson's 



figure of C . gracilis, he has staled that Corynoides is clearly a Cephalo- 



graptus of spoonlike outline, with six thecae, the apertures of which lie in 



one row at the "proximal" end. He would, therefore, by the strict law of 



priority replace the term Cephalograptus by Corynoides if, in his opinion, 



the description of the latter genus was not based upon insufficient material. 



Dr Gurley had, according to his manuscript notes, 



recognized but one species, viz, C . calicularis in his 



collection from Stockport, Columbia co., N. Y. and this had 



left him in doubt as to the structure of the rhabdosome, 



especially as to the question, whether it consisted of one or 



several thecae. He states : 



This species possesses either two or three hydrothecae 

 caifci 1 2 fari°s ryn Nic]ior- or it consists of a single hydrothecal tube with several 



son. Copies of Nichol- i t^ , i ■ • i i <■• 



son's figures in the mouths. 1 he latter supposition seems to be the one lndi- 



Manual of Palaeontology 11 -r> r ivt • 1 1 > £ • 1 r , l r i l 



cated by rroiessor Nicholsons figure m Monograph of the 

 British Graptolites [p. 132, fig. 74]. The former, however, seemed to 

 me more probable from the appearance of the American specimens. He 

 adds : " However, it may be concerning the simple or multiple thecate 

 character of Corynoides it is certain that the structure of the genus is more 

 complex than has heretofore been supposed. Thus one specimen was seen 

 where two of these tubes orio-inate from a common stem. Several other 

 more doubtful specimens were seen. One of these showed two branches 

 with a common origin which simulated closely a sicula." 



In the manuscript for a bulletin on the Dendroidea by the same author, 

 C. calicularis is arranged with this latter class ol graptolites. Xo 

 explanation for this arrangement is given, but I presume that the last cited 

 observation has led to this conclusion on the taxonomic position ol the 

 genus. The accompanying text figures were found with the manuscript. 



