91 



POLYTEOPIS MACROLINEATUS, Whitfield. (Sp.) 



Euomphalus macroUneat'us, Whitfield 1878. Ann. Rep. Geol. Surv., Wiscons., 



for 1877, p. 82. 



" " " 1882. Geol. Wiscons., vol. IV., p. 294, 



pi. 18, figs. 5 and 6. 

 Whlteaves. . . 1884. Thi-s volume, pt. 1, p. 20, pi. 3, fig. 6. 



Elora, T. C. Weston, 1867 : a specimen with such an unusually high 

 spire as to suggest the idea that the '^ Holopea (?) occidentalis " of Nichol- 

 son, which has been found only at Elora, may have been based upon a 

 cast of the interior of a shell of this species. Durham, J. Townsend, 1 882 : 

 the original of the figure on Plate 3 of the first part of this volume. These 

 two specimens were identified with Euomphalus macrolineatus, in 1884, 

 on the authority of Professor Whitfield, to whom they were submitted for 

 examination. That species was referred to Polytropis by Koken in 1889, 

 in a foot-note to page 425 of the paper previously quoted. 



Polytropis ceevulatus, Whiteaves. 



Straparolluf, crenidatus, Whiteaves. .1884. This volume, pt. 1, p. 21, pi. 3, figs. 8, 



8, a-h. 



Durham, J. Townsend, 1878-82 : two specimens. These are remark- 

 ably similar to a shell that Hall figures on Plate 25, figs. 11 and 12, of 

 the revised edition of the Twentieth Annual Report of the Regents of 

 the State of New York, under the name " Pleurotomaria (Trnchonema) 

 Hoyi," but bear very little resemblance to the type of that species, as 

 figured on Plate 15, figure 10, of both editions of that report. Moreover, 

 the periphery of P. Hoyi is described as " somewhat flattened, with a de- 

 pressed band truncating the upper angle," whereas that of the Durham 

 specimens is regularly but rather narrowly rounded. 



Polytropis Durhamensis. (N. Sp.) 



Plate 14, figs. 1 and 2. 



Shell of medium size for the genus, subdiscoidal and more than three 

 times as broad as high, spire depressed and scarcely raised above the 

 highest level of the outer vblution : suture deeply channelled : last volu- 

 tion gently convex above and below, subangular and obtusely sub- 

 carinate at the periphery : base rather widely but shallowly umbilicated 

 in the centre, the umbilicus occupying more than one-third of the entire 

 diameter and exposing nearly one-half of each of the inner volutions, 

 though its sides slope gradually inwards and its margin is rounded and 



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