624 



BATRACHIA. 



[OPH. — PHU 



pectinatus. Cope, see Ptyonius pectinatus. 



rectidens, Cope, 1874, Trans. Am. Phil. Soc, 

 and Ohio Pal., vol. 2, p. 386, Coal Meas. 



remex, Cope, 1868, Proc. Acad. Nat. Sci. 

 p. 217, (Sauropleura remex,) Ohio Pal., 

 vol. 2, p. 381, Coal Meas. 



serrula, see Ptyonius serrula. ' 



vinchellanus, see Ptyonius vinchellanus. 

 Ophiacodon, Marsh, 1878, Am. Jour. Sci. 

 and Arts, 3d ser., vol. 15, p. 411. [Ety. 

 ophiakos, belonging to serpents; odous, 

 tooth.] Type 0. grandis. 



grandis, Marsh, 1878, Am. Jour. Sci. and 

 Arts, 3d ser., vol. 15, p. 411, Permian. 



rnirus, Marsh, 1878, Am. Jour. Sci. and 

 Arts, 3d ser., vol. 15, p. 411, Permian. 

 Ornithichnites, Hitchcock, 1836, Am. Jour. 

 Sci. and Arts, vol. 29. [Ety. ornithos, a 

 bird ; ichnos, a footstep.] This is not 

 properly a generic name. No bird-tracks 

 are known in Palseosoic rocks. The 

 Batrachian tracks referred to it belong 

 to another genus. 



culbertsoni, King, 1845, Am. Jour. Sci. and 

 Arts, vol. 48, p. 345, Coal Meas. 



gallinuloides, King, 1845, Am. Jour. Sci. 

 and Arts, vol. 48, p. 344, Coal Meas. 

 Pantylus, Cope, 1881, Bull. U. S. Geo. Sur. 

 Terr., vol. 6, No. 1, p. 79. [Ety. pan, 

 all ; tylos, a knob.] Founded upon the 

 crania ; ossification complete, leaving 

 only orbits, nostrils, and parietal fonta- 

 nel ; surface sculptured ; mandible 

 with an angular process ; teeth conic, 

 obtuse, larger anteriorly ; mandible sup- 

 porting several rows of teeth, which 

 oppose a pavement of obtuse teeth on 

 the palate ; these are situated on the 



Ealatine or anterior part of pterygoid 

 ones; quadratojugal and malar bones 

 well developed ; no lyra or mucous 

 grooves. Type P. cordatus. 

 cordatus, Cope, 1881, Bull. U. S. Geo. 

 Sur. Terr., vol. 6, p. 79, Permian. 



Pariotichus, Cope, 1878, Pal. Bull., No. 29, 

 and Proc. Am. Phil. Soc, vol. 17, p. 508. 

 [Ety. pareia, the cheek; teichos, a wall.] 

 Founded on the cranium. Temporal 

 fossae were covered by a roof continu- 

 ous with the postorbital region ; zygo- 

 matic arch extends low down ; orbits 

 lateral ; muzzle short, with terminal 

 nares; teeth rooted, crowns obtuse, with 

 cutting edge. Type P. brachyops. 

 brachyops, Cope, 1878, Pal. Bull., No. 29. 

 and Proc. Am. Phil. Soc, vol. 17, p. 508, 

 Permian, 

 megalops, Cope, 1883, Pal. Bull., No. 36, 

 and Proc. Am. Phil. Soc, vol. 20, p. 630, 

 Permian. 



Parioxys, Cope, 1878, Pal. Bull., No. 29, and 

 Proc. Am. Phil. Soc, vol. 17, p. 521. 

 [Ety. pareia, cheek ; oxys, sharp.] Syn. 

 for Eryops. 

 ferricolus, see Eryops ferricolus. 



Pelion, Wyman, 1868, Proc. Acad. Nat. Sci. 

 Phil., p. 211. [Ety. proper name.] 

 Founded upon an inferior view of part 

 of the skeleton ; head as broad as long, 



semielliptical ; angles of mandibles pro- 

 ject backward ; mandibular rami slen- 

 der, curved; vertebrae have centra as 

 broad as long, and medially contracted ; 

 fore limbs stout; humeri long, thick- 

 ened proximally, flattened and dilated 

 distally ; ulna and radius united proxi- 

 mally, narrowing the arm proximally 

 while expanded distally ; left hand ex- 

 hibits four digits, of which the third 

 from the inner is the longer ; number 

 of phalanges is 2, 3, 4?; carpus not os- 

 seous. Type P. lyelli. 



Fig. 



1HH).— Pelion lyelli. 



lyelli, Wyman, 1858, (Raniceps lyelli,) Am. 

 Jour. Sci. and Arts, 2d ser., vol". 25, p. 158, 

 and Ohio Pal., vol. 2, p. 389, Coal Meas. 



Fig. 1191.-Phlegethontia linearis. 



Phlegethontia, Cope, 1871, Proc. Am. 

 Phil. Soc, p. 177. [Ety. Phlegethm, a 

 burning river of hell.] Head elongate, 



