80 
The thin callus covering the inner lip clings to the quartzose matrix 
in our specimens so that it is rarely seen. This variety occurs in great 
abundance with Plagioglypta canna in a quartzite bed. A similar associ- 
ation occurs in northern Arizona (at the Wild Band Pockets and at House 
Rock Ranch), and likewise in a quartzite bed. In Arizona, however, the 
gastropod is smaller than in Alberta; a medium size specimen has trans- 
verse and longitudinal diameters of 14 mm., with 14 cost® — probably a 
normal E. carbonarius. 
Since nearly all of the Belleraphontidse at this horizon occur as internal 
moulds it is impossible to determine if some of the specimens may not be 
Euphemus subpapillosus (White), since this differs from E. carbonarius 
merely in its larger size and in the papillose ornamentation of the latter 
half of the last whorl. It is likewise impossible to say that some do not 
belong to E. nodocarinatus Hall. A few large specimens have the irregu- 
larity of coiling characteristic of E. inspeciosus (White), but lack the 
median angulation at the anterior end of the mature shell and the narrow 
dorsum of the immature coils. 
Locality and Horizon. The species E. carbonarius occurs in the Penn- 
sylvanian from Ohio to Texas, in the Permian of Arizona, New Mexico, etc. 
In the Minnewanka region the variety occurs in the Permian of sections 1-10 
(C); 3-3 (c). 
Genus, Euconospira Ulrich 
Euconospira turbiniformis (Meek and Worthen) 
1860. Pleurotomaria turbiniformis Meek and Worthen, Acad. Nat. Sci. 
Phil., Proc., p. 461; Meek and Worthen, 1866, Geol. Surv., Illinois, 
Rept,, vol. 2, p. 369, PI. 28, figs. 8 a-c; White, 1884, Geol. Surv., 
Indiana, 13th Rept., p. 160, PI. 32, figs. 7, 8; Keyes, 1894, Geol. 
Surv., Missouri, vol. 6, p. 135, PI. 48, figs. 6 a-b. 
Remarks. Our specimens agree in all their preserved characters with 
this species. It is larger (diameter of last whorl 18 mm. to 20 mm.) than 
Mather’s E. arkansana. 1 
Locality and Horizon. Pennsylvanian, etc., of the Mississippi valley 
and Colorado. In the Minnewanka region in the Permian of section 1-14 (c) . 
Genus, Straparollus Montfort 
Straparollus quadrivolvis (Hall) ? 
1866. Euomphalus quadrivolvis Hall, Trans. Albany Inst., vol. 4, p. 19; 
Hall, 1883, 12th Rept. Geol. Surv., Indiana, p. 349, PL 31, figs. 24, 25. 
Locality and Horizon. Mississippian (St. Louis) of Indiana. In the 
Minnewanka region in the Mississippian of section 4-5 (R). 
Straparollus umbilicatus (Meek and Worthen) ? 
1860. Euomphalus umbilicatus Meek and Worthen, Proc. Acad. Nat. Sci. 
Phil., p. 462; Straparollus umbilicatus Meek and Worthen, 1866, 
Geol. Surv., Illinois, vol. 2, p. 362, PI. 29, figs. 1 a-c. 
1 Bull. Sci. Lab. Denison Univ., vol. 18, p. 235, PI. 15, fig. 25. 
