. Ontario Sessional Papers, 1874, . Fig. Leptocaelia plano-convexn Halli ; a, Profile view of the same, h,Hhynchonella neylecta Hall) ; ft, Profile view of the same, c, Rhynchonellactweato(Hall), d, Orthis ele(jantula CDnhn.) ; d Profile view of the same,e, Atri/pa hemispheiHra (Sowerby) ; e, Profile view of the same. /, Atrypaconpesta (Hall) ; /, Profile view of the same, y, Orthis cnlHgramma (Vern.); ;/, Profile view of the same. Clinton Formation. 113. Orthis elegantula (Dalman). Fig. 21, t/, d. Clinton group, Dundas and Owen Sound. 114. Orthis calligramma var. D
. Ontario Sessional Papers, 1874, . Fig. Leptocaelia plano-convexn Halli ; a, Profile view of the same, h,Hhynchonella neylecta Hall) ; ft, Profile view of the same, c, Rhynchonellactweato(Hall), d, Orthis ele(jantula CDnhn.) ; d Profile view of the same,e, Atri/pa hemispheiHra (Sowerby) ; e, Profile view of the same. /, Atrypaconpesta (Hall) ; /, Profile view of the same, y, Orthis cnlHgramma (Vern.); ;/, Profile view of the same. Clinton Formation. 113. Orthis elegantula (Dalman). Fig. 21, t/, d. Clinton group, Dundas and Owen Sound. 114. Orthis calligramma var. Davidsoni (De Verneuil). Fig. 21, ^, ^.Clinton group, Dundas. 115. Orthis flabellulum (Sowerby) ] Clinton group, Dundas. 116. Leptaena sericea (Sowerby). Clinton group, Dundas and Hamilton. 117. Strophomena RHOMBOiDALis (Wahlcnbcrg). Clinton group, Owen Fig 22 Strophomena rhomhoidalis, Wahl. (After Billings). Trenton, Hudson River,Clinton, Niagara, and Devonian Formations. 47 38 Victoria. Sessional Papers (No. 8.) A. 1874 118. AVICULA ALATA (Hall). {lief. Posldonia ? data, Hall, Pal. N. Y., Vol. II, PI. XXVII. Fig. 4.) Clinton group, Dundas. 119. MoDioLOPSis ORTHONOTA (Conrad). (Ref. Modiolopsis orthonota, Hall, Pal. N. Y. Vol. II, PI. IV, A. Figs. 1 «—c). Clinton group, , 120. Ctenodonta, sp. Casts of a small but undeterminable species of Ctenodonta are of common occurrence inthe earthy haematite of the Clinton group at Dundas. 121. Tentaculites distans (Hall). Tentamlites distans, Hall, Pal. N. Y. Vol. II, PI. XLL A. Fig-s. 9 a—c. Tentaculites distans, Nicholson & Hinde, Canadian Jounuil, April, 1874. Tube straight, conical, from six to eiglit lines in length, and about one line in diameternear the mouth. Annulations remote, nearly or quite half a line apart near the mouth, andabout a third of a line apart near the
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