CLASS EEPTILIA. 



SUB-CLASS BATEACHIA. 



FAMILY COLOSTEIDjE.— Amphibamus, Colosteus, Sauropleura. 



FAMILY MOLGOPHICE.— Molgophis, Pleuroptyx. 



FAMILY PHLEGETHONTIID.E— Phlegethontia. 



FAMILY PTYONIID.E.— Hyphasma, Oestocephalus, Ptyonius. 



FAMILY TUDITANIDyE.— Brachydectes, Ceraterpeton, Dendrerpeton, Eurythorax, 



Hylerpeton, Hylonomus, Leptophractus, Pelion, Tuditanus. 

 ORDER PROTEIDA.— Cocytinus, Thyrsidium. 

 INCERTjE 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 — swimming and walking.] 



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

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

 headed.] 

 B.iPHETES, Owen, 1853, Jour. Geo. Soc. 

 London, vol. 9. [Ety. bapio, 1 dip or 

 dive — a diving animal.] 



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

 Coal Meas. [Sig. less.] 



planiceps, Owen, 18.53, Jour. Geo. Soc. 

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

 flat-headed.] 

 BfiAciiYDECTES, Cope, 1868, Proc. Acad. Nat. 

 Sci. Phil. [Ety. 6rae/ij/s, short ; deklea, 

 a biter.] 



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

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

 Ceraterpeton, Huxley. [Ety. kenis, horn ; 

 erjiiion, reptile.] 



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

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



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

 Coal Meas. [Sig. slender-horned.] 

 Cjieirotiibrium, Kaup, 1835, in Leonhard 

 und Bronn, Neues Jahrbuch fur Min- 

 eralogie. [Ety. cheir, the hand; 

 therion, beast.] 



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

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

 proper name.] 



EPSYSAUEUS, Lea, 1852, Jour. Acad. Nat. 

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

 glass ; satirus, a lizard ; from the com- 

 pression laterallj' of the vertebrse 

 towards the center.] 

 pennsylvanicus. Lea, 1852, Jour. Acad. 

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

 proper name.] 

 Cocytinus, 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; saurw, a lizard.] 

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

 Coal Meas. [Ety. proper name.] 

 Colosteus, Cope, 1869, Trans. Am. Phil. 

 Soc. [Ety. kohs, short; osteon, a bone.] 

 crassicukitus, syn. for C. scutellatus. 

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



Coal Meas. [Sig. pitted.] 

 marshi, see Ptyonius marshi. 

 pauciradiatus,Cope, 1874,Tran8. Am. Phil. 



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

 scutellatus, Newberry, 1856, (Pygopterus 

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

 Coal Meas. [Sig. having a shield.] 

 Dendreepeton, 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.] 



