L AMELLIBR ANC H I AT A . 



311 



gillata, are from the Marshall or Cho- 

 teau Gr. 



Edmoxdia inlesi is a typographical error 

 for E. nilesi. 

 pinonensis, Meek, 1877, U. S. Geo. Expl. 

 40th parallel, vol. 4, Devonian. [Ety. 

 proper name.] 

 subplana instead of Cypricardia sub- 

 plana. 



Goxiophora ehemungensis, Vanuxem, 1842 

 (Cvpricardites ehemungensis), Geo. 

 Hep. N. Y., Chemung Gr. [Ety. 

 proper name.] 

 plieata instead of Cypricardella plicata. 

 speeiosa, Hall, 1879, Desc. New Spec. 

 Foss., Niagara Gr. [Sig. beautiful.] 



Isocardia, jennae is from the Marshall Gr. 



Leptodomcs undulatus, Whitfield, 1878, 

 Ann. Rep. Geo. Sur. Wis., Niagara 

 Gr. [Sig. undulated.] 



Lithophaga illinoisensis, Worthen, 1882, 

 Bull. No. 1, 111. St. Mus. Nat. Hist. 

 [Ety. proper name.] Proposed instead 

 of the form identified as L. lingualis 

 of Phillips. 

 lingualis is not an American species. 



Lucixa billingsana, n. sp. Devonian. This 

 name is proposed instead of L. occi- 

 dentalis, Billings. 1859, Assiniboine 

 & Saskatchewan, Ex. Exped., p. 187, 

 figs, b and c. It is from Snake Island, 

 Lake Winnipegosis. The specific 

 name octidentalia was preoccupied by 

 Morton for a Cretaceous species. 



Luxulicardium fragosum, Meek, 1877 

 (Posidonomya fragosa), U. S. Geo. 

 Expl., 40th parallel, Carboniferous. 

 [Sig. rough.] 



MaCRODox cochlearis is from the Marshall 

 Gr. 



Megalomus compressus, Nicholson & 

 Hinile, 1874, Can. Jour., vol. 14, 

 Niagara Gr. [Sig. compressed.] 



Modiolopsis cancellata, Waleott, 1879, 

 Trans. Alb. Inst., vol. 10, Utica Slate 

 Gr. [Sig. cancellated.] 

 carrollensisT Worthen, 1882, Bull. No. 1, 

 111. St. Mus. Nat. Hist., Galena Gr. 

 [Ety. proper name.] Proposed in- 

 stead of M. subnasuta of Meek & 

 Worthen, 1870, Proc. Acad. Nat. Sci., 

 p. 41, which was preoccupied, 

 reetiformis, Worthen, 1882, Bull. No. 1, 

 111. St. Mus. Nat. Hist., Trenton Gr. 

 [Sig. straight formed.] proposed in- 

 stead of 31. orthonota, Meek & 

 Worthen, 1868, Geo. Sur. 111., vol. 3, 

 which was preoccupied. 



Modiomorpha concentrica, should be Con- 

 rad, 1838 (Pterinea concentrica) Ann. 

 Pep. Geo. Sur., N. Y., etc. 



Moxotis septentrionalis, Haughton, 1857, 

 Jour. Roy. Dub. Soc, vol. 1. [Sig. 

 northern.] 



Myalixa apachesi is from the Subcarbon- 

 iferous ; M. concentrica from the War- 

 saw Gr., M. iowensis from the Mar- 



shall Gr., and M. perattenuata was 



described in 1858. 

 Myalixa iowensis, Winchell, 1865, Proc. 



Acad. Nat. Sci., Burlington Gr. [Ety. 



proper name.] 

 Mytilarca percarinata, Whitfield, 1882, 



Desc. New Spec. Foss. from Ohio, 



Up. Held, Gr. [Sig. very carinate.] 

 Nucula was described in 1801 ; N. hians, 



N. houghtoni and N. microdonta are 



from the Marshall or Kinderhook Gr. 

 iowensis was described in the Proc. Bost. 



Soc. Nat. Hist., vol. 8, and is a Tel- 



linomya. N. Stella is also a Tellin- 



omya. 

 nasuta, refer to Nuculana nasuta. 

 perumbonata, White, 1879, Bull. U. S. 



Geo. Sur., vol. 5, No. 2, Carbonifer- 

 ous. [Sig. having a very convex umbo.] 

 Nuculana dens-mamillata, N. nuculiformis, 



N. pandoriformis, and N. saccata are 



from the Marshall Gr. 

 nasuta instead of Nucula nasuta. 

 obesa, White, 1879, Bull. U. S. Geo. Sur., 

 . vol. 5, No. 2, Carboniferous. [Sig. 



plump.] 

 Nugulites mactroides is from the Marshall 



Gr. 

 sulcatinus is from the Marshall Gr., and 



is a Tellinomva. 

 triangularis, Hall & Whitfield. 1877, U. 



S. Geo. Expl , 40th parallel, Devonian. 



[Sig. triangular.] 

 yoldiiformis, Ulrich, 1879, Jour. Cin. 



Soc. Nat. Hist., vol. 2, Hud. Riv. Gr. 



[Sig. shaped like a Yoldia.] It is not 



a Nuculites. 

 Orthodesma byrnesi, S. A. Miller, 1881, 



Jour. Cin. Soc. Nat. Hist., vol. 4, Hud. 



Riv. Gr. [Ety. proper name.] 

 cuneiforme, S. A. Miller, 1880, Jour. 



Cin. Soc. Nat. Hist , vol. 3, Hud. Riv. 



Gr. [Sig. wedge formed.] 

 mickelboroughi, Whitfield. 1878, Jour. 



Cin. Soc. Nat. Hist., vol. 1, Hud. Riv. 



Gr. [Ety. proper name.] 

 occidentale, S. A. Miller, 1880, Jour. 



Cin. Soc. Nat. Hist., vol. 3, Hud. Riv. 



Gr. [Sig. western.] 

 subovale, Cliich, 1879, Jour. Cin. Soc. 



Nat. Hist., vol. 2, Hud. Riv. Gr. [Sig. 



6uboval.] 

 Orthoxota phaselia i* from the Marshall Gr. 

 ventricosa, White & Whitfield, 1862, 



Proc. Bost. Soc. Nat. Hist., vol. 8, 



Kinderhook Gr. [Sig. ventricose.] 

 Orthoxotella, S. A. Miller, 1882, Jour. 



Cin. Soc. Nat. Hist., vol. 5. [Ety. 



orthos, straight ; notos, back ; ellus, 



diminutive.] 

 faberi, S. A. Miller, 1882, Jour. Cin. Soc. 



Nat. Hist., vol. 5, Hud. Riv. Gr. 



[Ety. proper name.] 

 Ostrea patercula, Winchell, is from the 



Marshall Gr. 

 Pal^oxeilo similis, Whitfield, 1882, Desc. 



New Spec. Foss. from Ohio, Erie 



Shale, Portage ( ?) Gr. [Sig. similar.] 



