CAR.] 



LAMELUBRANCHIA TA. 



469 



Fig. 788.-Cardinia 

 listeri. 



carbo, coal; Area, a genus.] Inequi- 

 valve, inequilateral, very convex, trans- 

 versely oblong or oval ; umbones gib- 

 bous, prominent, strongly incurved, 

 with subangular posterior slopes; 

 valves closed all around with smooth 

 margins; ligament external; cardinal 

 margin arched ; two anterior oblique 

 teeth, and behind these minute crenu- 

 lations, as in Area. Type C. gibbosa. 



gibbosa, Meek & Worthen, 1870, Proc. 

 Acad. Nat. Sci. Phil., p. 40, and Geo. 

 Sur. 111., vol. 6, p. 531, Coal Meas. 



Cardinia, Agassiz, 

 1838,* in Societ. 

 Basil. [Ety. cardo, 

 the hinge of a 

 door.] Oblong, 

 attenuated poste- 

 riorly, com- 

 pressed; ligament 

 external ; cardinal 

 teeth obscure, lateral, remote, promi- 

 nent ; adductor impressions deep ; pal- 

 lial line simple. Type C. listeri. 



sequimarginalis, see Edmondia aequimar- 

 ginalis. 



antigonesensis, Dawson, 1868, Acad. Geo., 

 p. 304, Carb. 



complanata, Winchell, 1862, Proc. Acad. 

 Nat. Sci., p. 413, Portage Gr. 



concentrica, see Sanguinolites concentricus. 



cordata, Swallow, 1858, Trans. St. Louis 

 Acad. Sci., vol. 1, p. 191, Permian Gr. 



(?) fragilis, Cox, 1857, Geo. Sur. Ky., vol. 

 3, p. 570, Coal Meas. 



occidentalis, Swallow, 1860, Trans. St. 

 Louis Acad. Sci., p. 655, Waverly or 

 Choteau Gr. 



subangulata, Swallow, 1858, Trans. St. 

 Louis Acad. Sci., vol. 1, p. 192, Per- 

 mian Gr. 



subangulata, Dawson, 1868, Acad. Geol., p. 

 304. This name was preoccupied. 

 Oardiola, Broderip, 

 1844, Trans. 

 Geo. Soc. [Ety. 

 kardia, the 

 heart.] Oblique- 

 ly oval or sub- 

 circular, tumid, 

 equi valve, in- 

 e q u ilateral ; 



beaks large, Fig. 789.-Cardiola in- 

 prominent, terrupta. 



obliquely incurved anteriorly; ends 

 subequal, rounded; ventral margin 

 convex ; hinge-line shorter than the 

 shell, with a flattened cardinal area, 

 widest between the beaks, extending 

 its whole length ; surface radiately 

 ribbed. Type C. interrupta. 



■equilatera, see Panenka equiiatera. 



dichotoma, see Panenka dichotoma. 



doris, see Paracardium doris. 



elevata, see Panenka ventricosa. 



erecta, see Pararca erecta. 



filicostata, Walcott, 1885, Monogr.U. S. Geo. 

 Sur., vol. 8, p. 251, Subcarboniferous. 



hero, see Panenka hero. 



lincklseni, see Panenka lincklseni. 



radians, see Panenka radians. 



robusta, see Panenka robusta. 



salteri, Haughton, 1857, Jour. Roy. Soc. 

 Dub., vol. 1, Devonian. 



sao, see Pararca sao. 



speciosa, Hall, 1883, Pal. N. Y.. vol.5, pi. 

 70, fig. 2-9, and pi. 80, fig. 10, Genesee 

 Slate. 



transversa, see Pararca transversa. 

 Cardiomorpha, DeKoninck, 1844, Anim. 

 Foss. Carb. Belg., p. 101. [Ety. kardia, 

 heart; morphe, form.] Shell very thin, 

 equivalve, inequilateral, margins closed, 

 oblique, tumid ; beaks tumid, produced, 

 spirally inrolled to the anterior side; 

 no hinge teeth; hinge margin inflected 

 nearly at right angles to form a hollow 

 lunette, running from the beak 

 nearly to the cardinal angle ; two ad- 

 ductor impressions in each valve; 

 pallial scar simple, very faintly marked ; 

 a shallow anterior depression beneath 

 the beaks, but the margin sharp and 

 prominent. Type C. elongata. 



31 



Fig. 790 —Cardiomorpha cordata. 



archiacana, DeKoninck, 1843, Desc. An. 



Foss. Belg., p. 104, Carboniferous, 

 bellatula, Hall, 1870, Prelim. Notice Lam. 



Shells, p. 92, and Pal. N. Y., vol. 5, pi. 



63, figs. 1-3, Ham. Gr. 

 capuloides, Winchell, 1862, Proc. Acad. 



Nat. Sci., p. 416, Marshall Gr. 

 concentrica, Hall, 1883, Pal. N. Y., vol. 5, 



pi. 63, fig. 4, syn. for C. zonata. 

 cordata, Hall, 1883, Pal. N. Y., vol. 5, pi. 



62, figs. 10-19, Ham. Gr. 

 donaciformis, Hall, 1883, Pal. N. Y., vol. 



5, pi. 63, fig. 6, Ham. Gr. 

 eriopia, Hall, 1870, Prelim. Notice Lam. 

 Shells, p. 92, and Pal. N. Y., vol. 5, pi. 



63, figs.. 7-8, Ham. Gr. 



julia, Winchell, 1862, Proc. Acad. Nat. 



Sci., p. 416, Marshall Gr. 

 kansasensis, Swallow, 1858, Trans. St. 



Louis Acad. Sci., vol. 1, p. 191, Per- 

 mian Gr. 

 missouriensis, Shumard, 1858, Trans. St. 



Louis Acad. Sci., vol. 2, p. 207, and Geo. 



Sur. 111., vol. 5, p. 588, Coal Meas. 

 modiolaris, Winchell, 1862, Proc. Acad. 



Nat. Sci., p. 416, Marshall Gr. 

 (?) obliquata, Meek, 1872, Proc. Acad. 



Nat. Sci. Phil., p. 327, and Ohio Pal., 



vol. 1, p. 146, Hud. Riv. Gr. 



