CRUSTACEA. 



Odontocephalns, Conrad, 1840, Ann. Geo. 

 Rep. N. Y. 



selenurus, see Dalmanites selenurus. 

 Odontochile, syn. for Dalmanites. 

 Ogygia, Brongniart, 1822, Hist. Nat. Crust. 

 Foss. [Ety. mythological name.] 



vetusta, see Asaphus vetustus. 

 Olenellus, Hall, 1861, 14th Reg. Rep. N. 

 Y. [Ety. diminutive of Olenus.'] 



asaphoides, Emmons, 1844, (Ellipto- 

 cephalus asaphoides) Geo. Rep. N.Y., 

 Potsdam Gr. [Sig. like an Asaplms.] 



gilberti, Meek, 1874, Rep. Invert. Foss., 

 Potsdam Gr. [Ety. proper name.] 



howelli, Meek, 1874, Rep. Invert. Foss., 

 Potsdam Gr. [Ety. proper name.] 

 - thompsoni, Hall, 1859, (Olenus thomp- 

 soni) 12th Reg. Rep. N. Y., (Barrandia 

 thompsoni) 13th Reg. Rep., (Paradox- 

 ides thompsoni) Emmons, Man. Geo., 

 Potsdam Gr. [Ety. proper name.] 



vermontanus, Hall, 1859, (Olenus ver- 

 montana) 13th Reg. Rep. N. Y., Pots- 

 dam Gr. [Ety. proper name.] 

 Olenus, Dalman, 1826, Monograph of Tri- 

 lobites. [Ety. mythological name.] 



asaphoides, see Olenellus asaphoides. 



(?) logani, Devine, 1863, Can. Nat. & Geo., 

 vol. 8, Quebec Gr. [Ety. proper name.] 



thompsoni, see Olenellus thompsoni. 



undulostriatus, Hall, 1847, Pal. N. Y., 

 vol. 1, Hud. Riv. Gr. [Sig. having 

 waved striae.] 



vermontana, see Olenellus vermontanus. 

 Pai^eocaris, Meek & Worthen, 1865, Proc. 

 Acad. Nat. Sci. Phil. [Ety. palaios, 

 ancient; hart*, a shrimp.] 



typus, Meek & Worthen, 1865, Proc. 

 Acad. Nat. Sci. Phil., Coal Meas. 

 [Ety. type of the genus.] 

 Paradoxioes, Brongniart, 1822, Hist. Nat. 

 Crust. Foss. [Ety. paradoxos, marvel- 

 ous, paradoxical.] 



arcuatus, Harlan, 1835, Trans. Geo. Soc. 

 Penn., Potsdam Gr. [Sig. arched.] 



becki, see Triarthrus becki. 



bennetti, Salter, 1859, Quar. Jour. Geo. 

 Soc, vol. 15, Potsdam Gr. [Ety. proper 

 name.] 



boltoni, see Lichas boltoni. 



decorus, Billings, 1865, Pal. Foss., vol. 1, 

 Potsdam Gr. [Sig. beautiful.] 



eatoni, syn. for Triarthrus becki. 



harlani, Green, 1834, Am. Jour. Sci., vol. 

 25, Potsdam Gr. [Ety. proper name.] 



lamellatus, Hartt, 1868, Acad. Geol., St. 

 John's Gr. [Sig. from the laminai on 

 the anterior lobe of the glabella.] 



micmac, Hartt, 1868, Acad. Geol., St. 

 John's Gr. [Ety. proper name.] 



nevadensis, Meek, 1870, Proc. Acad. Nat. 

 Sci., Potsdam Gr. [Ety. proper name.] 



tenellus, Billings, 1874, Pal. Foss., vol. 

 2, Potsdam Gr. [Sig. very delicate.] 



thompsoni, see Olenellus thompsoni. 



triarthrus, Harlan, 1835, Trans. Geo. Soc. 

 Penn., Potsd. Gr. [Sig. three-jointed.] 



vermontana, see Olenellus vermontanus. 



Peltura, M. Edwards, 1840, Crustaces, etc. 

 holopyga, Hall, 1859, see Bathynotus 



holopyga. 

 Pemphigaspis, Hall, 1863, 16th Reg. Rep. N. 



Y. [Ety. pemphix; a pustule ; aspis, a 



shield.]* 

 bullata, Hall, 1863, 16th Reg. Rep. N. 



Y., Potsdam. Gr. [Sig. studded, 



bossed.] 

 Phacops, Emmrich, 1839, de Trilobites. 



[Ety. phakos, a lens; ops, the eye.] 

 bufo, Green, 1832, (Calymene bufo) Mon- 

 ograph of Trilobites, Ham. Gr. [Sig. 



a toad.] 

 bombifrons, Hall, 1861, 15th Reg. Rep. 



N. Y., Up. Held. Gr. [Sig. a hollow- 

 sounding front.] 

 cacapona, Hall, 1861, 15th Reg. Rep. N. 



Y, Up. Held. Gr. [Ety. proper 



name.] 

 callicephala, see Dalmanites callicephalus. 

 cristata, Hall, 1861, 15th Reg. Rep. N.Y., 



Up. Held. Gr. [Sig. tufted.] 

 hudsonica, Hall, 1859, Pal. N. Y, vol. 3, 



Low. Held. Gr. [Ety. proper name.] 

 laticaudus, see Dalmanites laticaudus. 

 logani, Hall, 1859, Pal. N. Y, vol. 3, Low. 



Held. Gr. [Ety. proper name.] 

 nupera, Hall, 1843, (Calymene nupera) 



Geo. Rep. 4th Diet. N. Y., Chemung 



Gr. [Sig. late, recent.] 

 orestes, Billings, 1860, Can. Nat. & Geo., 



vol. 5, Mid. Sil. [Ety. mythological 



name.] 

 rana, Green, 1832, (Calymene bufo var. 



rana) Monograph of Trilobites, Ham. 



Gr. [Sig. a frog.] 

 trisulcata, Hall, 1843, (Calymene (?) tri- 



sulcatus) Geo. Rep. 4th Dist. N. Y., 



Clinton Gr. [Sig. three-furrowed.] 

 Phillipsia, Portlock, 1843, Rep. Geol. Lon- 

 donderry. [Ety. proper name.] 

 bufo, Meek & Worthen, 1870, Proc. Acad. 



Nat. Sci., Keokuk Gr. [Sig. a toad.] 

 cliftonensis, Shumard, 1858, Trans. St. 



Louis Acad. Sci., Coal Meas. [Ety. 



proper name.] 

 coronata, Hall, 1877, Ham. Gr. Pro- 

 posed instead of P. ornata, which was 



preoccupied. [Sig. crowned.] 

 howi, Billings, 1863, Can. Nat. & Geol., 



vol. 8, Carboniferous. [Ety. proper 



name.] 

 insignis, Winchell, 1863, Proc. Acad. Nat. 



Sci., Burlington Gr. [Sig. marked.] 

 laevis, Hall, 1876, Illust. Devonian Foss., 



Tully limestone. [Sig. smooth.] 

 lodiensis, Meek, 1875, Ohio Pal., vol. 2, 



Waverly Gr. [Ety. proper name.] 

 major, Shumard, 1858, Trans. St. Louis 



Acad. Sci., vol. 1, Coal Meas. [Sig. 



larger.] 

 meramecensis, Shumard, 1855, Geo. Rep. 



Mo., Archimedes limestone. [Ety. 



proper name.] 

 minuscula, Hall, 1876, Illust. Devonian 



Foss., Up. Held. Gr. [Sig. rather 



small.] 



