CLASS EEPTILIA, 



SUB-CLASS BATEACHIA. 



FAMILY COLOSTEID^.— Amphibamus, Colosteus, Sauropleura. 



FAMILY JIOLGOPHIDiE.— ^Molgophis, Pleuroptyx. 



FAMILY PHLEGETHONTIID.E.— Phlegethontia. 



FAMILY PTYONIID^.— Hyphasma, Oestocephalus, Ptyonius. 



FAMILY TUDITANID^.— Brachydectes, Ceraterpeton, Dendrerpeton, Eurythorax, 



Hylerpeton, Hylonomus, Leptophractus, Pelion, Tuditanus. 

 ORDER PROTEIDA.— Cocytinus, Thyrsidium. 

 INOERTjE SEDIS. — Baphetes, Cheirotherium, Clepsysaurus, Collettosaurus, Eosaurus, 



Ornithichnites, Sauropus, Spheropezium, Thenaropus. 



Amphibamus, Cope, 1865, Proc. Acad. Nat. 

 Sci. Phil. [Ety. amphi, both ; bama, 

 a step ; from its two modes of pro- 

 gressing — swimmiing and walking. ] 

 grandiceps. Cope, 186-5, Proc. Acad. Nat. 

 Sci. Phil., Coal Meas. [Sig. big- 

 headed.] 



Baphetes, Owen, 1853, Jour. Geo. Soc. 

 London, vol. 9. [Ety. bapto, I dip or 

 dive — a diving animal.] 

 minor, Dawson, 1870, Can. Nat. & GeoL, 



Coal ]\Ieas. [Sig. less.] 

 planiceps, Owen, 1853, Jour. Geo. Soc. 

 London, vol. 9, Coal Meas. [Ety. 

 flat-headed.] 



Bkachydectes, Cope, 1868, Proc. Acad. Nat. 



Sci. Phil. [Ety. brachys, short ; d^kies, 



a biter.] 



newberryi. Cope, 1868, Proc. Acad. Nat. 



Sci., Coal Meas. [Ety. proper name.] 



Ceraterpeton, Huxley. [Ety. keras, horn ; 



erpetott, reptile.] 

 punctolineatum. Cope, 1875, Ohio Pal., vol. 



2, Coal ]Meas. [Sig. puncture-lined.] 

 tenuicorne, Cope, 1875, Ohio Pal., vol. 2, 



Coal Meas. [Sig. slender-horned,] 

 Chbirotheeium, Kaup, 1835, in Leonhard 



und Bronn, Neues Jahrbuch fur Jlin- 



eralogie. [Ety. cheir, the hand; 



therion, beast.] 

 reiteri, Moore, 1863, Am. Jour. Sci. & 



Arts, 3rd ser., vol. 5, Coal Meas. [Ety. 



proper name.] 



^^BPSYSAUEUs, Lea, 1852, Jour. Acad. Nat. 

 Sci., vol. 2. [Ety. klepsydra, a sand- 

 glass ; saurus, a lizard ; from the com- 

 pression laterally of the vertebrae 

 towards the center.] 

 pennsylvanicus, Lea, 1852, Jour. Acad. 

 Nat. Sci., vol. 2, Coal Meas. [Ety. 

 proper name.] 

 CocYTixcs, Cope, 1871, Proc. Am. Phil. Soc. 

 [Ety. kokytos, mythological name.] 

 gyrinoides. Cope, 1874, Trans. Am. Phil. 

 Soc, Coal Meas. [Sig. like a tadpole.] 

 Collettosaurus, Cox, 1873, Geo. Sur. Ind. 

 [Ety. proper name; saurus, a lizard.] 

 indianensis, Cox, 1873, Geo. Sur. Ind., 

 Coal ]\Ieas. [Ety. proper name*] 

 CoLOSTEU.s, Cope, 1869, Trans. Am. Phil. 

 Soc. [Ety. Icolos, short; osteon, a, hone.] 

 craasicuhitus, S}'n. for C. scutellatus. 

 foveatus, 1869, Trans. Am. Phil. Soc, 



Coal Meas. [Sig. pitted.] 

 marshi, see Ptyonius marshi. 

 pauciradiatus. Cope, 1874,Trans. Am. Phil. 



Soc, Coal Meas. [Sig. few-lined.] 

 scutellatus, Newberry, 1856, (Pj'gopterus 

 scutellatus) Proc. Acad. Nat. Sci. Phil., 

 Coal Meas. [Sig. having a shield.] 

 Dendrerpeton, Owen, 1853, Quar. Jour. 

 Geo. Soc, vol. 9. [Ety. dendron, a 

 tree; erpeton, a lizard; from the pe- 

 culiar circumstances under which the 

 fossil reptile was found.] 



