. Report of the Geological exploration of the fortieth parallel . and the outlineof the lip not clearly \ i/2a. A smaller specimen, with the lip and the extremity of the canal broken away. Fig. B.^Cardium curtum : ; 151 . r^<j Left view of one of the largest specimens, which is an internal cast. Fig. Sfa. Cardidm subcurtum 152 fS-- • A small specimen, right side view. Fig. 4. Tellina MODESTA. Cast of left valve . 157 V Fig. 5. Tellina ? modesta. Cast of a larger left valve, possibly of this species 157 Fig. 6. Tellina? isonema. Left view of a cast of exterior 156 vFifi^.Cyprimeria? s
. Report of the Geological exploration of the fortieth parallel . and the outlineof the lip not clearly \ i/2a. A smaller specimen, with the lip and the extremity of the canal broken away. Fig. B.^Cardium curtum : ; 151 . r^<j Left view of one of the largest specimens, which is an internal cast. Fig. Sfa. Cardidm subcurtum 152 fS-- • A small specimen, right side view. Fig. 4. Tellina MODESTA. Cast of left valve . 157 V Fig. 5. Tellina ? modesta. Cast of a larger left valve, possibly of this species 157 Fig. 6. Tellina? isonema. Left view of a cast of exterior 156 vFifi^.Cyprimeria? subalata. Internal cast of left valve 158 Fig. 8. Mactra? Emmonsi. Cast of outside of left valve, two diameters. 153 /Ipig. (AkcoPAGiA)? Utahensis 155 \^ 9. Cast of right valve. .^ 9 a-6. Two other casts of right valves, differing somewhat in form, but probably belong-j ing to the same species. Fig. lO. OSTREA 140 ^ 10. Interior of an upper 10 a. Outer or upper side of same. 10 6. Interior of an under \alve. 10 c. Outside of same. Plate Elliott dBl J Bien Jitr, ! iHb I^L^TE X^^I. 1. Sph^rium ? Idahoense 183 1. A specimen consisting mainly of an internal cast, with some portions of the shell remaining. 1 a. An outline to show the convexity of the same. Fig. 2. Sph^rium rugosum 182 2. A rather small specimen, enlarged two diameters. 2 a. A larger specimen, enlarged two diameters. ■ 2 6. An outline to show convexity, enlarged two diameters. Fig. 3. Unio Haydeni 184 3. View of left valve. 3 a. Same view of a larger specimen. 3 b. Internal cast, showing an impression of the hinge. Fig. 4. Unio belliplicatos 165 4. Left, side of one of the larger specimens. 4 a. Right view of a smaller individual of same. Fig. 5. Unio vetustus 16 5. A young shell flattened hy pressure, with a part of the posterior broken away. (Original type of the species.) 5 a. A large specimen, somewhat twisted over by oblique pressure, so as to hide the 6. A dorsa
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Keywords: ., booksubjectbotany, booksubjectgeology, booksubjectpaleontology
