WHiTEAVES.] FOSSILS OP HAMILTON rORSIATION OF ONTARIO. 109 



altogether absent. This difference, even if constant, which it does not 

 appear to be, is probably not even of varietal importance. 



The species is placed in the genus Granatocrinus, rather than in Pe/i- 

 fremitidea as suggested by Etheridge and Carpenter, mainly on the 

 authority of Mr. Wachsmutb, who informs the writer that it " i.s 

 intermediate between Granatocrinus and Pentremitidea, but nearer the 

 former. It has tivc circular spiracles, that of the posterior side 

 confluent with the anal aperture ; all five deltoid pieces are plainly 

 seen in a side view, and the ambulacra extend to almost the full 

 length of the calyx; the basals slightly projecting." 



Professor Whitfield thinks that the Pentremites Maia of Hall is only 

 a variety of the present species. 



CoDASTEK Canadensis, Billings. 



Plate 14, rigs. 4 and 4 a. 



Codasler Canadrnsis, Billings, 1869. Am. Journ. Sc. and Arts, Series 2, vol. 



XL VIII., p. 79. 

 " " " 1870. Ann. Mag. Nat. Hist., Series 4, vol. V., 



pp. 262, 263. 

 1874. Geol. Surv. Can., Pal. Foss., vol. II., pp. 

 100, 101. 

 Coddfter Hindei, Etheridge and Carpenter. 18S2. Ann. and ilag. Nat. Hist., 



Series 5, vol. IX., p. 235. 



The types of C. Canadensis appear to have been collected by Mi-. 

 Johnson Pettit in 1868 in the township of Bosanquet, and from the 

 same township, three-quarters of a mile from Thedford, the Rev. 

 Hector Currie has since obtained twelve other specimens, two of 

 unusually large size, in 1882-84, three of which he has kindly for- 

 warded to the writer for examination and study. 



Although the name suggested by Mr. Billings is here provisionally 

 retained, partly because it is the oldest and partly because it was pub- 

 lished in one of the Survey reports, it is quite possible that it may 

 have to be abandoned in favour of the later name given to it by Messrs. 

 Etheridge and Carpenter, on the ground that the former was not 

 accompanied by a recognizable definition of its specific characters. 



On page 92 of a paper entitled " On the Devonian Fossils of Canada 

 West," published in the "Canadian Journal" (of Toronto) for May, 

 1860, in reference to the genus Cyrtodonta, Mr. Billings himself writes: 

 " I have been the first to describe correctly and illustrate this genus 

 under a name that is in no respect inappropriate, and I have a right to 

 retain that name against those which are objectionable or not founded on 



