331 



EuoMPHALOPTEEUS Eloba (Billings). 



PUurotomaria Elora, Billings 1862. Geol. Surv. Canada, Palseoz. Foss . , 



vol I, p. 154, fig. 135. 



.1 M Billings 1863. Geol. Canada, p. 343, fig. 348. 



11 II Whiteaves 1895. This volume, pt. II, p. 74, pi. 11, figs. 



5 and 6. 



This species is here referred to Euomphalopterus on the authority of 

 Dr. E. O. Ulrich, who, in a letter to the writer, dated January 20, 1906, 

 writes that ,it " has all the essential characteristics of that genus." " The 

 only diiFerence," he adds, " that I can see is that the peripheral wing in- 

 stead of being entire is broken up into a series of spines. These spines 

 may very well represent the 'lunulee ' that, if my memory is not at fault, 

 occur in E. alatus between the two thin sheets forming the alation. A 

 subgenus, possibly, should be erected to signalize this departure from the 

 usual type." 



LOPHOSPIRA CoNEADI (Hall). 



Murchisonia Conradi, Hall 1864. Eighteenth Regent' sRep. New York. St. 



Cab. Nat. Hist., p. 344, pi. 15 (6), fig. 19. 

 It " Whiteaves. 1884. This volume, pt. I, p. 27, pi. 4, fig. 6. 



This and the three following species are referred to Lophospira on the 

 authority of Dr. Ulrich. 



Lophospira Xanthippe (Billings). 



Murchisonia Xanthippe, 'BWl\Vigs 1862. Geol. Surv. Canada, Palaeoz. Foss., vol. 



I, p. 155, fig. 137. 

 „ ^ II Whiteaves. . ..1895. This volume, pt. II, p. 80. 



LbPHOSPiRA Mylitta (Billings). 



Murchisonia Mylitta, Billings 1862. Geol. Surv. Canada, Pal^oz. Foss., vol. I, 



p. 157, fig. 110. 

 Whiteaves 1895. This volume, pt. II, p. 79. 



Lophospira Hespelebensis, Whiteaves. 



Murchisonia Hespelerensis, Whiteaves .... 1884. This volume, pt. 1, p. 24, pi. 41, fig. 



3 ; and (189j) pt. II, p. 79. 



Lophospira Guelphica (nom. prov.) 



Murchisonia. (Species uncertain). Whiteaves. 1895. This volume, pt. II, p. 79, pi. 12, 



fig. 3. 



LoxoPLOOUS soLUTus (Whiteaves). 



Murchisonia soluta, Whiteaves 1884. This volume, pt. I, p. 28, pi. 4, figs. 



8 and 8a. 



Murchisonia tropidophora. Whiteaves 1884. Idem, p. 29, pL 7, figs. 5 and 5a. 



Loxoplocus solutus, Fischer 1885. Man. de Conchyliol., etc., p. 847. 



II II Whiteaves 1895. This vulume, pt. II, p. 84, pi. 12, 



figs. 7 and 8. 



