PISCES. 



319 



Protichnites alternans, P. latus, P. line- 

 atus, P. multinotatuB, P. ooto-notatus 

 2, and P. septem-notatus are from the 

 Potsdam Gr. 



Ptbkocephaha Ecemer, 1849, Texas, Mit 

 naturwissenoh. Anhaiig. Bonn., and 

 afterward in 1852, Kreid von Texas. 

 [Ety. pteron wing; Icephale head.] It 

 is identical with Dicellocephalus, and 

 has priority of definition, and was 

 illustrated the same year. 



2-, sancti-sabse, Eoemer, 1849, Texas, Mit 

 naturwissenoh. Anhang., and in 1852, 

 ^ Kreid von Texas., Potsdam Gr. [Ety. 

 proper name.] 



Ptbkygotus huflfaloensis, Pohlman, 1881, 

 Bull. Buf. Soc. Nat. Hist., vol. 4, 

 7 Waterlime Gr. [Ety. proper name.] 

 cummingsi, Grote & Pitt, 1877, Bull 

 Buf. Soc. Nat. Hist., vol. 4, Water- 

 lime Gr. [Ety. proper name.] 

 Ptychaspis minuta, Whitfield, 1878, Ann. 

 2 Kep. Geo. Sur. Wis., Potsdam Gr. 

 [Sig. minute.] 



pustulosa. Hall & Whitfield, 1877, U. S. 



Geo. Expl., 40th Parallel, Potsdnm 



Gr. [Sig. pustulous.] 

 speciosa, Walcott, 1879, 32d Keg. Eep. 



[Sig beautiful.] 

 striata, Whitfield, 1878, Ann. Eep. Geo. 



Sur. Wis., Potsdam, Gr. [Sig. 



striated.] 

 Ehachuka, Scudder, 1878, Proc. Bost. Soc. 



Nat. Hist. [Ety. rachis, a ridge ; oura, 

 tail.] 

 Ehachuka venosa, Scudder, 1878, Proc. 

 / ^ Bost, Soc. Nat. Hist., Coal Meas. [Sig. 



full of veins.] 

 EusiCHNiTBs carbonarius, Dawson, 1868, 

 f yr Acadian Geoloffy,Carboniferous. [Sig . 



pertaining to Carbon.] 

 3, grenvillensis, Dawson, Chazy Gr. [Ety. 



proper name.] 

 Solenoplbuea nana, Ford, 1878, Am. Jour. 

 2 Sci. and Arts. 3d ser., vol. 15, Pots- 

 dam Gr. [Sig. a dwarf.] 

 Spathiocaris, Clarke, 1882, Am. Jour. Sci. 

 and Arts, 3d ser., vol. 23. [Ety. 

 spathe, a spathe; karis, a shrimp.] 

 //, emersoni, Clarke, 1882, Am. Jour. Sci. 

 and Arts, 3d ser., vol. 23, Portage 

 Gr. [Ety. proper name.] 

 lutheri instead of Lisgocaris lutheri. 

 Triarthhus becki is from the Utica Slate 

 y Gr. 



, fischeri, Billings, 1865, Pal. Poss., Que- 

 bec Gr. [Ety. proper name.] 

 w glaber, Billings, 1859, .Can. Nat. and 

 / Geol., vol. 4, Utica Slate Gr. [Sig. 



smooth.] 

 spinosus is from the Utica Slate Gr. 

 trilineatus should be referred to Atops 

 trilineatus. 

 Trinuclbus bellulus, Ulrich, 1878, Jour. 

 Cin. Soc. Nat. Hist., vol. 1, is from 

 ' ' the Utica Slate, and, seems to be the 

 young of T. concentricus. 



CLASS ARACHNIDA. 



EoscoRPiDS was published in vol. 46, Am. Jour. Sci. and Arts. 



CLASS MYRIAPODA. 



EuPHOBBKiA was published in vol. 46, Am. Jour. Sci. and Arts. 



CLASS INSECTA. 



Archimylaoeis mantis is a typographical 

 or accidental mistake, and the name 

 should be stricken out. 



Ephbmbritbs primordialis, Scudder, 1878. 

 Proc. Bost. Soc. Nat. Hist., Coal 

 I"/. Meas. [Sig. primordial.] 



Tbrmbs, Linnaeus, 1748, Systema Naturae, 



p. 610, and older authors. [Etj.termes, 



a worm that eats wood. ] 

 ty. contusus, Scudder, 1878, Proc. Bost. Soc. 



Nat. Hist.. Coal Meas. [Sig. broken 



or bruised] 



CLASS PISCES. 



Acondylacanthus (?) mudgianus, St. 

 ^u- John&Worthen (In press), Geo Sur. 



111., vol. 7. Up. Coal Meas. [Ety. 



proper name.] 

 w nuperus, St. John & Worthen (In press), 

 ''' ■ Geo. Sur 111., vol. 7, Up. Coal Meas. 



[Sig. new,] 



AcoNDYLACANTHUS rcctus, St. John <fc 



.. Worthen (In press), Geo. Sur. 111., 



'T vol. 7, Up, Coal Meas. [Sig. straight.] 



xiphias, St. John & Worthen (In press), 



,3 Geo. Sur. 111., vol. 7, Keokuk Gr. 



[Sig. a sword fish.] 

 Amacanthus can not be derived from ana- 



