380 CONTRIBUTIONS TO CANADIAN PAL.EONTOLOCxY. 



Leioclema MiNUTissiMOM, Nicholson. (Sp.) 



Oallopora minutissima, Nicholson. 1875. Rep. Pal. Prov. Ontario, p. 77, figs, 43, a, k. 

 ? Fishihpora minuta, Rominger. ISfiG. Proc. Ac. Nat. So. Philad., vol. XVIII., p. 120. 

 .' iCTOctewa mmi<<«m (Rominger) Ulrioh. 1890. (ieol. 8urv. Illinois, vol. VIII., p. 427. 



Not uncommon at Bartlett's Mills. If this species bp the same as the 

 Fistidipora minuta of Rominger, as Ulrich thinks it may be, it of course 

 will have to be called Leioclema minutAiin. 



FiSTDLipORA UTEICULUS, Rominger. 



Fistulipora utriculus, Rominger. 1.SG6. Proc. Ac. Nat. So. Philad., vol. VIII., p. 121. 



,1 Nicholson &. Fourd. 1885. Ann. and Mag. Nat. Hist., Filth Ser., 



vol. XVI., p. 508, pi. 16, figs. 1, 1, a-c ; and pi. 17, tigs. 1 and la. 



Common at Thedford and Bartlett's Mills. In the Museum of the Sur- 

 vey there are two of the original types of the species, from " Widder," 

 presented by Dr. Rominger ; two spscimens from practically the same 

 locality, collected by Mr. Pettit in 1868; and seven specimens from 

 Bartlett's Mills, presented by Professor H. A. Nicholson in 1890. 



Fistulipora Romingeri, Nicholson & Foord. 



Fistulipora crassa,'B.ommge'i:. 18()0. Proc. Ac, Nat. So. Philad., vol. XVIIL, p. 121. But 

 not Hcteropora r-rassa, Lon,sdale, 1839 (in Murchison's Silurian Sys- 

 tem, pi. 15, figs. 14 and 14a) which Nicholson and Foord say is a Fis- 

 tulipora. 



Fistulipora Aomingeri, Nicholson and Foord. 1885. Ann. and Mag. Nat. Hist., Fifth 

 Ser., vol. XVI , p. .501). 



The only authentic ex^imples of this species in the Museum of the Sur- 

 vey are two of the types from " Widder " presented by Dr. Rominger. 



Fistulipora variapora, Hall. 



Thallosliijma variapora. Hall. 1881. Tians. Albany In.st., vol. X., p. 184. 



1884. Rei>. State Geol. for 1883, p. 18. 

 Fistulipora variapora. Hall. 1887. Pal. N. York, vol. VI., p. 210, pi. 58, figs. 9-14. 



"Hamilton group, West Williams, Ontario, Canada." Hall. 

 Fistulipora (?) subtilis. Hall. 



Thallosligma suUilis, HaU. 1881. Trans. Albany Inst., vol. X., p. 187. 



1884. Rep. State Geol, for 1883, p. 30. 

 FisluliporaCf) subtilis. Hall. 1887. Pal. N. York, vol. VI., p. 2.33. Not figured. 



"Hamilton Group, West Williams, Ontario, Canada." Hall. 



LiCHENALIA STELLATA, Hall. 



Lichenalia stellata. Hall. 1881. Trans. Albany Inst., vol. X, p. 183. 

 1884. Rep. State (ieol. for 188.3, p. 30. 

 1887. Pal. N. York, vol. VI, p. 19,5, pi. 58, figs. 15 and 16. 



