333 



The memoir last cited is a descriptive and illustrated monograph of the 

 " Guelph Fauna in the State of New York." One of the new species that 

 is described and figured therein is this Hormotoma, and its describers say 

 that they " have little doubt that the Guelph shell figured by Whiteaves 

 (specimens are from Gait, Hespeler and Elora) as Lox. magnum is specifi- 

 cally identical with, if smaller, than the New York specimens of Horm. 

 Whiteavesi." The three specimens from Ontario that were referred to 

 Loxonema magnum are badly preserved and do not shew the surface 

 markings, but the numerous Rochester specimens of H. Whiteavesi are 

 remarkably well preserved, and shew both the lines of growth and the 

 slit-bard very clearly. 



CcELOCAULUs, CEhlert. 



CcelocavZus, CEhlert 1887. Extr. Bull. Soo. d'Etud. Soient. 



d'Angers, p. 20 (teste Ulrich); non Cmlo- 



emdis. Hall, 1887. 

 Ccelidium, Clarke and Ruedemann 1903. N. York St. Mus., Mem. 5, pp. 65-67. 



CcELOCAULUS (1) ViTELLiA, (Billings). 



Murchiaonia Yitellia, Billings 1862. Geol. Surv. Canada, Palseoz. Foss., vol. 



I, p. 150, 6g. 138. 

 Nicholson 1875. Rep. Pal. Prnv. Ont., p. 3, fig. 6. 



This shell is rather doubtfully referred to Coslocaulus, on the authority 

 of Clarke and Ruedemann, who on page 67 of their memoir on the Guelph 

 Fauna in the State of New York, imply that M Vitellia is a Cmlidium, 

 which, as previously stated, is a generic name that they prefer to Ccelo- 

 caulus. The gutta percha impression of a natural mould of the exterior 

 of the shell of a specimen from Gait, upon which this species was based, 

 does not show whether the axis is perforate or not. To the writer, M. 

 Vitellia looks more like a species of Lophospira. 



COELOCADLUS MACROSPIRA (Hall). 



Murchisonia raacrospira. Hall 1852. Pal. N. York, vol II, p. 346, 



pi. 83, fig. 5. 



Murchisonia Logani, Hall 1852. Idem., p. 346, pi. 84, figs. 4 a 



and 4 b. 



Murchisonia macroapira, Billings 1863. Geol. Canada, p. 339, fig. 334. 



II 1. Nicholson 1875. Rep. Pal. Prov. Ontario, p. 



70, pi. 3, fig. 9. 

 „ „ Whiteaves 1S84. This volume, pt, I, p. 27, pi. 



4, figs. 7 and 7a. 



Murchisonia Logani. Whiteaves 189.5. This volume, pt. II, p. 80. 



Murchisonia macrospira, Whiteaves 1895. Idem, p. 81 . 



Ccdocaulus Logani, Ulrich and Scofield 1897. Geol. and Nat. Hist. Surv. 



Minn., Final Rep., vol. HI, pt. II, 



p. 1020 

 CcEWmm moorospiVa, Clarke and Ruedemann 1903. N. York St. Mus., Mem., 



5, p. 65, pi. 7, figs. 2-8 ; and pi. 10, 

 fig. 13. 



