Deer. 192 



Beer, fossil. See Cariacus dolichopsis. 

 Delthyris acanthoptera. See Spirifera disjuncta. VIII g, 

 Delthyris acuminata. See Spirifera acuminata. VIII g. 

 Delthyris arenosa. See Spirifera arenosa. VII. 

 Delthyris hrachinota. See Spirifera brachinota. V a, 

 Delthyris cardiospermitormis of Hisinger & Dalman. See 



Delthyris complicata. 



Delthyris congesta. See Spirifera congesta. VIII c. 

 Delthyris cuspidata. See Spirifera disjuncta. VIII g. 

 Delthyris crispa of Hisinger & Dalman, p. 122, III, fig. 6. 

 See Delthyris staminia^ and Spirifera staminea. Vh. 

 Delthyris deoemplicata. See Spirifer decemplicata. Vb. 

 Delthyris disjuncta. See Spirifera disjuncta. VIII g. 

 Delthyris duodenaria. See Spirifera duodenaria. Villa. 

 Delthyris expansus. See Pterotheca expansa. // b. 

 Delthyris Umbriata. See Spirifera fimbriata. VIII c. 

 Delthyris granulifera. See Spirifera granulifera. VIIIc. 

 Delthyris inermis. See Spirii3ra disjuncta. VIII g. 

 Delthyris Iwvis. See Spirifera Isevis. VIII f. 

 Delthyris lynx. See Orthis lynx. (Eogers, pp. 820). Va. 

 Delthyris macropleura. See Spirifera macropleura. VI 

 Delthyris medialis. See Spirifera medialis. VIII c. 

 Delthyris rnesacostalis. Spirifera mesacostalis. VIII g. 

 Delthyris mesastrialis. See Spirifer mesastrialis. VIII g. 

 Delthyris mucronatus. See Spirifera mucronata. VIII c 

 Delthyris niagarensis. See Spirifera niagarensis. Vb. 

 Delthyris prolata. See Spirifera prolata. VIII g. 

 Delthyris radiatus. See Spirifera radiata. Vb. 

 Delthyris sculptilis. See Spirifera sculptilis. VIII c. 

 Delthyris sinuatus. See Spirifera decemplicata. V b. 

 Delthyris staminea See Spirifera Staminea. Vb. 



Deltodus ? (See the fishes of Illinois by Newberry, in 



Geol. 111. Vol. 2, 1866, Vol. 4, 1870, for figs, of twelve species.) 

 Kecognized by Stevenson in Crinoidal limestone., Pittsburgh 

 series (Barren coal measures,) Fayette Co., Pa. (L, p. 36). — 

 XIV — Also in Decker^ s Or. shale., under Mahoning sandstone, 

 at Morgantown, W. Va. (L, p. S7)—XIII 



