484 



LAMELUBRANCHIA TA. 



[LED. — LEP. 



is an existing littoral genus that bur- 

 rows in the sand. It is not known in 



the Palaeozoic rocks. 

 (?) curia, Shumard, 1858, Trans. St. Louis 



Acad. Nat. Sci., vol. 1, p. 206, Cho- 



teau Gr. 

 jennse, Winchell, 1863, Proc. Acad. Nat. 



Sci., p. 17, Marshall Gr. 

 uni<miformi8, see Edmondia unioniformis. 

 Leda, Schumacher, 1817, syn. for Nuculana. 

 barrisi, White & Whitfield, syn. for Palseo- 



neilo nuculiformis. 

 bdlistriata, see Nuculana bellistriata. 

 brevirostris, see Nuculana brevirostris. 

 cutta, see Nuculana curta. 

 dem-mamillata, see Nuculana dens-mam- 



illata. 

 gibbosa, see Yoldia gibbosa. 

 knoxensis, see Yoldia knoxensis, 

 levistriata, see Yoldia levistriata. 

 nuculiformis, see Palaeoneilo nuculiformis. 

 ■obscura, see Nuculana obscura. 

 ohioensis, Hall, syn for Nuculana pandori- 



formis. 

 oweni, see Yoldia oweni. 

 pandoriformis, see Nuculana pandori- 



formis. 

 polita, see Nuculana polita. 

 rushensis, see Yoldia rushensis. 

 saccata, see Nuculana saccata.' 

 subacitula, see Yoldia subscitula. 

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



fit. 1, p. 4. (Plates and Explanations.) 

 Ety. lews, smooth ; Pteria, a genus.] 

 Aviculoid, resembling in form Actinop- 

 teria ; anterior extremity auriculate ; 

 wing large, extremity produced; test 

 without proper rays ; ligament ex- 

 ternal ; ligamental area marked by 

 fine parallel longitudinal stria? ; hinge 

 with one or two oblique, slender, 

 lateral teeth ; the cavity of the beak 

 partially separated from the anterior end 

 by a short partition. Type L. dekayi. 

 'bigsbyi, Hall, 1883, Pal. N. Y., vol. 5, pt. 



1, p. 165, Ham. Gr. 

 •chemungensis, Vanuxem, 1842, (Avicula 

 chemungensis,) Geo. Rep. 3d Dist. N. Y., 

 p. 182, and Pal. N. Y., vol. 5, p. 172, 

 Chemung Gr. 

 conradi, Hall, 1883, Pal. N. Y., vol. 5, pt. 

 1, p. 159, Ham. Gr. 



dekayi, Hall, 

 1883, Pal. N. Y., 

 vol. 5, pt. 1, p. 

 164, Ham. Gr. 

 gabbi, Hall, 1884, 

 Pal. N. Y., vol. 

 5, pt. 1, p. 169, 

 Ham. Gr. 

 greeni, Hall, 1883, 

 Pal. N. Y., vol. 

 5, pt. 1, p. 160, 

 Ham. Gr. 

 las vis, Hall, 1843, 

 (Aviculalsevis,) 

 Geo. Rep. 4th 

 Dist. N. Y., p. 181, and Pal. N. Y., vol. 

 5, p. 158, Marcellus Shale. 



Fig. 835. — Liopteria de- 

 kayi. Cast showing ver- 

 tical plate anterior to 

 the beak's. 



leai, Hall, 1884, Pal. N. Y., vol. 5, pt. 1, p. 

 168, Ham. Gr. 



linguiformis, Hall, 1884, Pal. N. Y., vol. 5, 

 pt. 1, p. 173, Chemung Gr. 



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

 pt. 1, p. 166, Ham. Gr. 



nitida, Hall, 1883, syn. for L. chemung- 

 ensis. 



oweni, Hall, 1883, Pal. N. Y., vol. 5, pt. 1, p. 

 170, Ham. Gr. 



rafinesquii, Hall, 



1883, Pal. N. 

 Y., vol. 5, pt. 

 1, p. 161, Ham. 

 Gr. 



savi, Hall, 1884, 



Pal. N.Y.,vol. 



5, pt. 1, p. 162, 



Ham. Gr. 

 torreyi, Hall, Fl e- 836. — Liopteria rafln- 



1884, Pal. N.Y., esqun - 

 vol. 5, pt. 1, p. 174, Chemung Gr. 



troosti, Hall, 1884, Pal. N. Y., vol. 5, pt. 1, 

 p. 167, Ham. Gr. 

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



fit. 1, p. 4. (Plates and Explanations.) 

 Ety. leptos, slender ; desma, a ligament.] 



Like Liopteria, except the anterior end 



is nasute and acute, instead of auricu- 

 late and rounded ; hinge-line narrow, 



with a slender, lateral tooth posterior 



to the beak ; ligament external ; test 



with concentric stria?. Type L. potens. 

 acutirostrum, Hall, 1884, Pal. N. Y., vol. 



5, pt. 1, p. 234, Chemung Gr. 

 agassizi, Hall, 1884, Pal. N. Y., vol. 5, pt. 



1, p. 182, Chemung Gr. 

 alatum, Hall, 1884, Pal. N. Y., vol. 5, pt. 



1, p. 218, Chemung Gr. 

 aliforme, Hall, 1884, Pal. N. Y., vol. 5, pt. 



1, p. 220, Chemung Gr. 

 arciforme, Hall, 1884, Pal. N. Y., vol. 5, 



pt. 1, p. 229, Chemung Gr. 

 aviforme, Hall, 1884, Pal. N. Y., vol. 5,pt. 



•1, p. 224, Chemung Gr. 

 becki, Hall, 1884, Pal. N. Y., vol. 5, pt. 1, 



p. 185, Chemung Gr. 

 billingsi, Hall, 1884, Pal. N. Y., vol. 5, pt. 



1, p. 192, Chemung Gr. 

 biton, Hall, 1884, Pal. N. Y., vol. 5, pt. 1, 



p. 222, Chemung Gr. 

 cadmus, Hall, 1884, Pal. N. Y., vol. 5, pt. 



1, p. 201, Chemung Gr. 

 clitus, Hall, 1884, Pal. N. Y., vol. 5, pt. 1, 



p. 210, Chemung Gr. 

 complanatum, Hall, 1884, Pal. N. Y., vol. 5, 



pt. 1, p. 227, Chemung Gr. 

 corydon, Hall, 1884, Pal. N. Y., vol. 5, pt. 



1, p. 212, Chemung Gr. 

 creon, Hall, 1884, Pal. N. Y., vol. 5, pt. 1, 



p. 202, Chemung Gr. 

 curvatum, Hall, 1884, Pal. N. Y., vol. 5, 



pt. 1, p. 196, TJp. Chemung Gr. 

 demus, Hall, 1884, Pal. N. Y., vol. 5, pt. 



1, p. 203, Chemung Gr. 

 disparile, Hall, 1884, Pal. N. Y., vol. 5, 



pt. 1, p. 186, Up. Chemung Gr. 

 extenuatum, Hall, 1884, Pal. N. Y., vol. 5, 



pt. 1, p. 207, Chemung Gr. 



