. The Geology of Minnesota . (Ctenodonta bed), Chatfleld, Minnesota. 34 Apical portion of a shell, preserved partly as a cast of the interior. Stones River group, High Bridge, Kentucky. 36 An imperfect, macerated shell from High Bridge, Kentucky. 37 Interior cast of the spire showing that the apical whorls are not filled with solid material as in the more typical species of Suhulitcs. Stones River group, Beloit,Wisconsin. Fig. 35 SuBULiTES KEGULARis Ulriet 1072 (See also plate LXXXII, figs. 47 and 4S.) 35 Interior cast of the last volution, showing the long and remarkably slender canal. High B
. The Geology of Minnesota . (Ctenodonta bed), Chatfleld, Minnesota. 34 Apical portion of a shell, preserved partly as a cast of the interior. Stones River group, High Bridge, Kentucky. 36 An imperfect, macerated shell from High Bridge, Kentucky. 37 Interior cast of the spire showing that the apical whorls are not filled with solid material as in the more typical species of Suhulitcs. Stones River group, Beloit,Wisconsin. Fig. 35 SuBULiTES KEGULARis Ulriet 1072 (See also plate LXXXII, figs. 47 and 4S.) 35 Interior cast of the last volution, showing the long and remarkably slender canal. High Bridge, Kentucky. Figs. 38 and 39 Fusispira subfusiformis Hall 1077 Opposite views of an incomplete cast of the interior, showing the convex whorlsand rather wide mouth which are characteristic of this species. Fusispira bed,Goodhue county, Minnesota. Figs. 40 and 41 Meekospira subconica U. and S 1080 Two views of the type of this species. Richmond group, near Spring Valley, Min-nesota. Vol. III. [@astp:registered??copyright:da,] Plate PLATE LXXXII. Page. Figs, land 2 Tryblidium modestum U. and S 826 Two views, dorsal and profile, of the specimen described. Figs. 3 and 4 Archinacella perovalis Whitfield sp 830 Dorsal and profile views of a cast of the interior from Minneapolis. (After Sar-deson, who called it Metoptoma explanata.) Figs. Sand 6 Archinacella rugatina Ulrich 835 Two views of a cast, apparently of the exterior, from Middletown, Ohio. Figs. 7 to 9 SCBNELLA MAGNIFICA U. and S 839 Three views, in outline and restored at the apex, of the specimen described. Fig. 10 ScENELLA OBTUSA Sardeson sp 841 Dorsal view of a cast of the interior, from Minneapolis. (After Sardeson, whocalled it Conchopeltis obtusa.) Figs. 11 to 15 Stenotheca EXSERTA Sardeson sp 842 11 and 12 Two views of a small specimen presumably of this species; Minneapolis. Geolog-ical and Natural History Survey of Minnesota, Museum Register No. Outline viow of a large specimen from Beloit, Wiscon
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