1003 



EOTOMARIA I.AIIIIIS-A. ti. KI. (I'/rich.) 



PLATE LXIX. KlliS. IS 17 



Width about 24 mm.. hltfht about 80 mm.; apical angle 00; volution* four and a half or flve. 



This species Is associated with, and In most respecU greatly mumbles, E. cnn.iW.r-i. Carefully 

 compared, however, several minor differences, as well as one that must be regarded as Important, will 

 MB MVlBM tfel bMCWttal '' tdTl rBBpMI iMfllO* * !!.' i,:i>. ! !:.::--.;. : ! ,1 _ .n,. . pMJ 

 lead one to suppose Th- principal difference lies In the relative development of the Inner lip. This ,, 

 somewhat excavated and much stronger In 1?. labiosa, while the lower i.-.r-l.-r also Is expanded In a way 

 that has not been observed In E. eanati/tra. Among other dllTiTences we may mention that the upper 

 sloping surface of the whorls Is on the whole flatter, the band lens sharply defined, the surface marking* 

 more obscure, the base more ventrlcose, and the umbilical perforation even smaller than In that species. 



Formation and locality. Lower division of the Stones Blver group, Murfrossboro, Tennessee. 

 CWfcefc. Ulrieh. 



EOTOM ASIA VICINA, M. Sp. 

 PLATE I.XIX. FIGS. li-. 



Shell rather small, 14 to 20 mm. wide, 10 to 14 mm. high, depressed conical above the angular 

 periphery, moderately ventrlcose beneath; apical angle 97 In one specimen, 107 In another. 

 Volutions four, the upper sloping surface nearly flat, the la*t a little convex above near the slightly 

 Impressed suture line. Band only moderately distinct, apparently more nearly vertical than usual for 

 the genus. Umbilicus equalling nearly a fourth of the width of the shell, the convex base turning rather 

 abruptly Into It.* Lines of growth showing obscurely on casts of the Interior, rather strongly defined 

 exteriorly, particularly upon the under side. On the upper slope they curve strongly backward from the 

 suture to th>- I.. I:..], nn the lower surface very slightly forward. 



The umbilicus Is larger and the anterior outline of the lower lip less curved than In either of the 

 preceding species. In both of these features it agrees with E. dryope Billings sp., with which It Is also 

 found associated In Minnesota, but the relative flatness of the upper slope of the whorls distinguishes It 

 readily from that species. 



Formation and JoeaMy.-Stones Blver group, Minneapolis, Minnesota, and Mineral Point. Wisconsin. 

 CbOectioiu. Geological and Natural History Survey of Minnesota: E. O. Ulrlch. 

 Miatum Reyittfr, No. 5106. 



IOMARIA DKYOPR Billings. 



PLATE I.XIX KliiS -. 



Plnmtomaria dryop, IUI.I.INOS, 18C6, Pal. Koss., vol. 1, p. 170. 



This well-marked species differs from E, vieina In the contour of the upper side of the whorls, the 

 outer two-thirds or three fourths of the slope being decidedly concave, the remaining fourth nnt the 

 suture convex. In other respects the two species agree very closely. 



Although the surface markings In our specimens are not as regular as In Billings', figures, the 

 resemblances In all other particulars are so exact that we cannot <l<>ui>t for a moment that they a re spe 

 clflcally Identical with the Canadian types. We notice a slight difference U-tw.-n th- specimens obtained 

 from the Stones River group and those from the Mlark River limestone. In the latt-r the apical angle Is 

 not so wide, being about 100, while the whorl next to the last Is, as described by Billing. -.ighlly 



ID Uio reproduction of fleam cm plaU LXIX om of U>* shading failed to " eon,* up." ranilug U> umbilical to 

 appear Barro* r ibaa It U In U> 



