31-2 



LAMELLIBRANCHIA TA. 



l4' 



Paeacyclas peroccidens, Hall & Whitfield, 

 p^v- 1877, U. S. Geo. Expl., 40tli parallel. 



Devonian. [Sig. far western.] 

 \ \ . sabini is from the Chemung Gr. 

 PiiENOrECTEN limatus is from the Marshall 

 1-^ ' Gr. 



Pholadomya elonqata is Allorisma elongatum. 

 Pinna ludlovi, Whitfield, 1876, in Ludlow's 

 Carroll to Yellowstone Park, Coal 

 Meas. [Ety. proper name.] 

 ..J, maxvillensis, Whitfield, 1882, Deso. New 

 Spec. Poss. from Ohio, Kaskaskla Gr. 

 [Ety. proper name.] 

 missouriensis is from the St. Genevieve 

 limestone, or St. Louis Gr. 

 JPleurorhynchus antiqua is Conocardium an- 

 tiquum. 

 PosiDONiA clathrata, P. distans, and P. per- 



striata were described in 1853. 

 PosiDONOMYA ambigua is from the Marshall 

 'b- Gr. 



fragosa, IMeek, 1877, U. S. Geo. Expl., 

 40th parallel, refer to Lunulicardium 

 fragosum. 

 Pkisconaia, Conrad, 18U7, Am. Jour. 

 Conch., vol. 3. [Ety. proper name.] 

 ,^ ventricosa, Conrad, 1867, Am. Jour. 

 ' ' Conch., vol. 3, Coal Meas. [Sig. ven- 

 tricose.] 

 rseudomonotis curta is Jurassic. 

 Ptekinea brisa is probably a syn. for P. 

 striaacosta. 

 cancellata, Barris, 1879 (Avicula canoel- 

 lata) Proc. Dav. Acad. Sci. Cornifer- 

 ous limestone. [Sig. r.-mcellated.] 

 concentrica is Modioinorijha concentrica. 

 crenistriata, Winchell, 1862 (Cardiopsis 

 crenistriata), Proc. Acad. Nat. Sci., 

 Marshall Gr. [Sig. having wrinkled 

 striae.] 

 mucronata, Ulrich, 1870, Jour. Cin. Soc. 

 Nat. Hist., vol. 2, Hud. Eiv. Gr. 

 [Sig. pointed.] 

 jieglccta, McChcsuey, 1861, New PaliBO- 

 zoic Fossils, Niagara Gr. [Sig. over- 

 looked. ■ 

 newarkensis, Meek, 1871, Proc. Acad. 

 Nat. Sci., AVaverly Gr. [Ety. proper 

 name. ] 

 siiuilis, Whitfield, 1882, Dcsc. New Spec. 

 Foss. frOMi Ohio, .Marccllus Shale. 

 [Sig. similar.] 

 J, spinalata, Winchell, 1865, Proc. Acad. 

 Nat. Sci., Burlington (?) Gr. [Sig. 

 spine winged.] 

 Pjeronites spergenensis, Whitfield, 1882, 

 Bull. Am. Mus. Nat. Hist., No. 3, 

 ' J' Warsaw Gr. [Ety. proper name.] 



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Pyanomya, S. a. Miller, 1881, Jour. Cin. 

 Soc. Nat. Hist., vol 4. [Ety. pyanos, 

 a bean ; My a, a genus.] 



i/ gibbosa, S. A. Miller, 1881, Jour. Cin. 

 Soc. Nat. Hist., vol. 4., Hud. Eiv. Gr. 

 [Sig. gibbous.] 



Ptychodesma knappanum is from the Ham. 

 I0< Gr. 



Sanguinolaeia leptogaster is from the 

 ; ,'i , Marshall or Kinderhook Gr. 



Sangtjinolitbs chemungensis, refer to 

 Goniophora chemungensis. 



/J5 amygdalinus, S. iowensis, S. jejunus, S. 

 missouriensis, S. nasutus, S. strigatus 

 and S. sulciferus are from the Mar- 

 shall or Kinderhook Gr. 

 naiadiformis, Winchell, 1870, Notices & 

 Desc. Foss, from the Marshall Gr. 

 [Sig. like a water nymph.] 

 securis, Winchell, 1870, Notices & Desc. 

 Foss. from ^Marshall Gr. [Sig. broad- 

 edged axe.] 

 sulciferus is from Proc. Acad. Nat. Sci., 

 1863. 



ScHizonus subtrigonalis. Meek, 1871, Proc. 



,3 Acad. Nat. Sci., Waverly Gr., [Sig. 

 subtrigonal.] 



Sbdgwickia lunulata, Whitfield, 1878, Jour. 



y _ Cin. Soc. Nat Hist., vol. 1, Hud. Kiv. 

 Gr. [Sig. resemblinga,little crescent.] 

 neglecta, is Cuneamya neglecta. 



Tellinomta angustata, and T. attenuata 

 are from the Upper Silurian. 



4. cingulata, Ulrich, 1879, Jour. Cin. Soc. 

 Nat. Hist., vol. 2, Hud. Kiv. Gr. 

 [Sig. girded.] 

 iowensis instead of Nucula iowensis. 

 Stella instead of Nucula Stella, 

 sulcatina instead of Nuculitcssulcatinus. 



TJnio ortlionotus is Jlodiolopsis orthonota. 

 primiijenius is Modiolopsis primigenia. 



Vanuxemia, Billings, 1858, Can. Nat. & 

 Geol., vol. 3. [Ety. proper name.] 

 This genus may be restored as it i.s 

 probably distinct from Cypricardites 

 though related to it. The species are 

 V. bayfleldi, V. inconstans, V. dixon- 

 ensis, T. montrealensis and T. tom- 

 kingi. 

 tomkinsi, Billings, 1860, Can. Jour , vol. 



H- 6, Corniferous limestone. [Ety. prop- 

 er name.] 



Yoldia rushensis, McChesney, instead of 

 Y. gibbosa, Mct^hesney, as the latter 

 was preoccupied. And Y. knoxensi* 

 instead of Y. polita for like reason. 



