214 



CRUSTACEA. 



rarus, Walcott, 1877, 29th Reg. Rep. N.Y., 



Trenton Gr. [Sig. rare.] 

 satyrus, Billings, 1865, Pal. Foss., Chazy 



Gr. [Ety. mythological name.] 

 -sol, Billings, 1865, Pal. Foss., Quebec Gr. 



[Ety. mythological name.] 

 solitarius, Billings, 1865, Pal. Foss., Que- 

 bec Gr. [Sig. solitary, alone.] 

 vigilans, see Encrinurus vigilans. 

 vulcanus, Billings, 1865, Pal. Foss., Que- 

 bec Gr. [Ety. mythological name.] 

 Chariocephalus, Hall, 1863, 16th Reg. Rep. 



[Ety. charis, charming or graceful; 



kephale, head.] 

 whitfieldi, Hall, 1863, 16th Reg. Rep., 



Potsdam Gr. [Ety. proper name.] 

 Clieirurus, Beyrich, syn. for Ceraurus. 

 Climachtichnites, Logan, 1860, Can. Nat. & 



Geo., vol. 5. [Ety. klirnax, ladder ; 



ichnos, a foot step.] 

 wilsoni, Logan, 1860, Can. Nat. & Geo., 



vol. 5, Potsdam Gr. [Ety. proper 



name.] 

 Colpocaris, Meek, 1872, a subgenus of Ceratio- 



caris. 

 Conocephalus, Zenker, 1833, Beitr. Naturg. 



Preoccupied for a genus of Orthoptera. 

 Conocephalites, Adams, 1848, Am, Jour. 



Sci., 2d series, vol. 5. [Ety. konos, a 



cone; kepliale, head.] 

 adamsi, Billings, 1861, Pal. Foss., vol. 1, 



Potsdam Gr. [Ety. proper name.] 

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



Y., Potsdam Gr. [Sig. duck-like.] 

 antiquatus, Salter, 1859, Jour. Geo. Soc, 



vol. 15, Potsdam Gr. [Sig. very 



ancient.] 

 arenosus, Billings, 1861, Pal. Foss., Pots- 

 dam Gr. [Sig. sandy.] 

 aurora, Hartt, 1868, Acad Geol., St. John's 



Gr. [Sig. morning.] 

 baileyi, Hartt, 186 8, Acad. Geol., St. 



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

 billingsi, Shumard, 1861, Am. Jour. Sci., 



vol. 32, Potsdam Gr. [Ety. proper 



name.] 

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



Y., Potsdam Gr. [Sig. two-knotted.] 

 pewensis, Owen, 1852, (Lonchoce- 



phalus chippewaensis) Geo. Iowa, 



Wis. & Minn., Potsdam Gr. [Ety. 



proper name.] 

 depressus, Shumard, 1861, Am. Jour. Sci., 



vol. 32, Potsdam Gr. [Sig. depressed.] 

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



Y., Potsdam Gr. [Sig. adorned with 



a diadem.] 

 dorsalis, Hall, 1863, 16th Reg. Rep. N. Y., 



Potsdam Gr. [Sig. from the back.] 

 elegans, Hartt, 18 68, Acad. Geol.. St. 



John's Gr. [Sig. elegant] 

 eos, Hall, 1863, 16th Reg. Rep. N. Y., 



Potsdam Gr. [Sig. the dawn.] 

 eryon, Hall, 1863, 16th Reg. Rep. N. Y., 



Poisdam Gr. [Sig. from the genus 



Eryon.'] 

 formosus, Hartt, 1868, Acad. Geol., St. 



John's Gr. [Sig. beautiful.] 



chippe 



gemini-spinosus, Hartt, 1868, Acad. Geol., 



St. John's Gr. [Sig. covered with twin- 

 spines.] 

 halli, Hartt, 1868, Acad. Geol., St. John's 



Gr. [Ety. proper name.] 

 hamulus, Owen, 1852, (Lonchocephalus 



hamulus) Geo. Iowa, Wis. & Minn., 



Potsdam Gr. [Sig. a little hook.] 

 iowensis, Owen, 1852, (Dikelocephalus 



iowensis) Geo. Iowa, Wis. & Minn., 



Potsdam Gr. [Ety. proper name.] 

 mathewi. Hartt, 1868, Acad. Geol., St. 



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

 minor, Shumard, 1863, Trans. St. Louis 



Acad. Sci., Potsdam Gr. [Sig. less.] 

 minutus, Bradley, 1860, Am. Jour. Sci., 



vol. 30, Potsdam Gr. [Sig. small.] 

 miser, Billings, 1861, Pal. Foss., vol. 1, 



Potsdam Gr. [Sig. wretched, poor.] 

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



Y, Potsdam Gr. [Sig. having a prom- 

 inent nose.] 

 neglectus, Hartt, 1868, Acad. Geol., St. 



John's Gr. [Sig. overlooked.] 

 optatus, Hall, 1863, 16th Reg. Rep. N. Y, 



Potsdam Gr. [Sig. desired.] 

 orestes, Hartt,1868, Acad. Geol., St. John's 



Gr. [Ety. mythological name.] 

 ouangondianus, Hartt, 1868, Acad. Geol., 



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

 oweni, Hall, 1863, 16th Reg. Rep. N. Y., 



Potsdam Gr. [Ety. proper name.] 

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



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

 perseus, Hall, 1863, 16th Reg. Rep. N. Y., 



Potsdam Gr. [Ety. mythological 



name.] 

 quadratus, Hartt, 1868, Acad. Geol., St. 



John's Gr. [Sig. squared.] 

 robbi, Hartt, 1868, Acad. Geol., St. John's 



Gr. [Etv. proper name.] 

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



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

 tener, Hartt, 1868, Acad. Geol., St. John's 



Gr. [Sig. delicate.] 

 teucer, Billings, 1861, Pal. Foss., vol. 1, 



Potsdam Gr. [Ety. mythological 



name.] 

 thersites, Hartt, 1868, Acad. Geol., St. 



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

 vulcanus, Billings, 1861, Pal. Foss., vol. 



1, Potsdam Gr. [Ety. mythological 



name.] 

 winona, Hall, 1863, 16th Reg. Rep. N. Y., 



Potsdam Gr. [Ety. proper name.] 

 wisconsinensis, Owen, 1852, (Crepicepha- 



lus wisconsinensis) Geo. Iowa, Wis. 



& Minn., Potsdam Gr. [Ety. proper 



name.] 

 zenkeri, Billings, 1860, Can. Nat. & Geol., 



vol. 5, Quebec Gr. [Ety. proper name.] 

 Conocoryphe, Corda, 1847, Prodr. [Ety. 



konos, a cone ; koryphe, the top of the 



head.] 

 kingi, Meek, 1870, Proc. Acad. Nat. Sci., 



Potsdam Gr. [Ety. proper name.] 

 gallatinensis, Meek, 1872, Hayden's Geo. 



Rep., Pots. Gr. [Ety. proper name.] 



