LAMELLIBRANCHIATA. 



309 



ulare of McChesney, which was 



preoccupied. 

 Petalichxus, S. A. Miller, 1880, Jour. Cin. 



Soc. Nat. Hist., vol. 2. [Ety. petalos, 



spread out; ichnos. track.] 

 multipartitus, S. A. Miller, 1880, Jonr. 



Cin. Soc. Nat. Hist., vol. 2, Utica 



Slate Gr. [Sig. many parted.] 

 Phragmoceras hoyi, Whitfield, 1878, Ann. 



Rep. Geo. Sur. Wis., Niagara Gr. 



[Ety. proper name.] 

 hoyi var. Compressum. Whitfield. 1878, 



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



Gr. [Sig. compressed.] 

 labiatum, Whitfield, 1878. Ann. Rep. 



Geo. Sur. Wis., Niagara Gr. [Sig. 



lipped.] 

 Piloceras amplum, Dawson, 1881, Can. 



Nat., vol 10, Calciferous Gr. [Sig. 



of large extent.] 

 Sklemina infundibuliforme, Castelnau, 1843, 



Syst. Sil. Probably the fragment of 



an Endoceras. 

 Teratichxus, S. A. Miller. 1880 Jour. Cin. 



Soc. Nat. Hist., vol. 2. [Ety. teras, a 



wonder; ichnos, track.] 

 confertus, S. A. Miller, 1880, Jour. Cin. 



Soc. Nat. Hist, vol. 2, Utica Slate 



Gr. [Sig. pressed together.] 

 Traciiomatichxus, S. A. Miller, 1880, 



Jour. Cin. Soc. Nat. Hist , vol. 2. 



[Ety. trachoma, that which is made 



rough; ichnos, track.] 

 cincinnatensis, S. A. Miller, 1880, Jour. 



Cin. Soc. Nat. Hist., vol. 2, Utica 



Slate Gr [Ety. proper name.] 

 numerosus, S. A. Miller, 1880, Jour. 



Cin. Soc. Nat. Hist , vol. 2, Utica 



Slate Gr. [Sig. numerous.] 



Trachomatichnus permultus, S. A. Miller, 



1880, Jour. Cin. Soc. Nat. Hist., vol. 



2, Utica Slate Gr. [Sig. very many.] 

 Trematoceras, Whitfield, 1882, Desc. New 



Spec. Foss., from Ohio. [Ety. trema, 



a hole; keras, a horn.] 

 ohioense, Whitfield, 1882, Desc. New 



Spec. Foss., from Ohio, Up. Held. 



Gr. [Ety. prope*r name.] 

 Trematodiscus digonus instead of Nautilus 



digonus. 

 konincki, Wetherby, 1881, Jour. Cin. 



Soc. Nat. Hist., vol. 4, Waverly Gr. 



[Ety. proper name j 

 rocky montanus, S. A. Miller, 1881, Jour. 



Cin. Soc. Nat. Hist., vol. 4, Burling- 

 ton Gr. [Ety. proper name.] 

 Trochoceras seneas, Hall, 1870, Rev. Ed. 



20th Reg. Rep. Expl., pi. 25, Ni- 

 agara Gr. [Ety. mythological name.] 

 barrandei, Hall, 1879," Pal. N. Y., vol. 



5, Schoharie Grit. [Ety. proper name.] 

 biton, Hall, 1879, Pal. N. Y., vol. 5, 



Schoharie Grit. [Ety. mythological 



name.] 

 expansum, Hall, 1879, Pal. N. Y., vol. 5, 



Schoharie Grit. [Sig. expanded.] 

 orion instead of Cyrtoceras orion. 

 pandum, Hall, 1879. Pal. N. Y., vol. 5, 



Schoharie Grit. [Sig. crooked.] 

 Trocholites circularis, Miller & Dyer, 



1878, Cont. to Pal. No. 2, Hud. Riv. 



Gr. [Sig. circular.] 

 minuscubis, Miller and Dyer, 1878, 



Cont. to Pal. No. 2, Utica Slate Gr. 



[Sig. rather small.] 



CLASS LAMELLIBRANCHIATA. 



Actixodesma subrectum, Whitfield, 1882, 

 Desc. New Spec. Foss. from Ohio, 

 Ham. Gr. [Sig. somewhat erect.] 

 Allorisma andrewsi, Whitfield. 1882. Desc. 

 New Spec. Foss. from Ohio, Kaskas- 

 kia Gr. [Ety. proper name.] 



antiquum is from the Kaskaskia Gr. 



elongatum, Morton, 1836 (Pholadomya 

 elongata), Am. Jour. Sci. & Arts, 

 vol. 29, Coal Meas. [Sig. elongated.] 



gilberti. White, 1879, Bull. U. S. Geo. 

 Sur., vol. 5, No. 2, Carboniferous. 

 [Ety. proper name.] 



maxvillense, Whitfield. 1882, Desc New 

 Spec. Foss from Ohio, Kaskaskia Gr. 

 [Ety. proper name.] 

 Amboxychia retrorsa, S. A. Miller, 1878, 

 Jour. Cin. Soc. Nat. Hist., vol. 1, 

 Hud. Riv. Gr. [Sig. turned back.] 



robusta. S. A. Miller, 1880, Jour. Cin. 



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



Gr. [Sig. robust.] 

 Anatina leda is from the Kinderhook Gr. 

 Angellum, S. A. Miller, 1878, Jour.. Cin. 



Soc. Nat. Hist., vol. 1. [Ety. aggos, 



a pail; ellus, diminutive.] 

 cuneatum, S, A. Miller, 1878, Jonr. Cin. 



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



[Sig. wedge formed.] 

 Anthracoptera polita, White, 1880, 12th 



Rep. U. S Geo. Sur. Terr., Coal 



Meas. [Ety. polished.] 

 Area modesta is from the Kinderhook Gr. 

 Astartei.la gurleyi. White, 1878, Proc. 



Acad. Nat. Sci., Coal Meas. TEty. 



proper name.] 

 Avicula sesopus, A. angustirostra and A. 



trilobata, from the Ham. Gr., A. mag- 

 na is from the Kaskaskia Gr., A. sub- 



qnadrans is Devonian A. textilis var. 



