268 



PlATECARPUS CURTIUOSTRIS, Cope. Plates XlV,^fig. 2; XV, tig. 3; XVI, figs. 

 5,0; XVII, fig. 2; XVIII, figs. 7, 8 ; XXI, fig. S; XXXVI,fig.5j XXXVn,fig. 10; 

 XXXVIII, fig. 1. 



Liodon curtiroatris, Cope, Proceedings of the Auiericau PhilosopUioal Society, 1871, December. — 

 Lestosanrus curtiroatris, Marsb, I. c. 



Niobrara chalk of the Smoky Hill River, Kansas. 

 aa. Relations of stapedial pit unknown : 



PlATECARPUS CRASSARTUS, CopC. Plate XXVI, figs. 1-12. 



Liodon crassartiis, Cope, Proceediuys of the Auiericau Philosoj)hical Society, 1871, 1G8, aud 

 December 



Niobrara chalk of Eagle Tail, Colorado. 

 PlATECARPUS simus, Marsh. 



Lestosaunis aimnii, Marsb,/. c, 1872, Juuc. 



Niobrara chalk of the Smoky Hill River. 



PlATECARPUS latifrons. Marsh. 



Lcsloaaurus latifrona. Marsh, 1. c, 1872, Juue. 



Niobrara chalk of the Smoky Hill River, Kansas. 

 PlATECARPUS GRACILIS, Marsh. 



Lcslosaiirua gracilis, Marsb, I. r., l,--!72, .June. 



Niobrara chalk of the Smoky Hill River, Kansas. 



PlATECARPUS? LATISPINIS, CopC. PLltC XXVI, fig. 1-G. 



Liodon hiiispinis, Cope, Proceedings of tlie Amcrieau Pbilosopbical Society 1871, p. Hid ; 

 1871, December. 



PlATECARPUS ? GLANDIFERUS, Cope. Plate XXVI, figs. 13, 14. 



Liodon (/landifcrus, Cope, Proceed! ugs of tlio Aiiicricau Pliilosophieal Society, 1871, Uece;iiber. 



Niobrara beds of the Smoky Hill River, Kansas. 



aaa. Staj'edial j)it excavated in a plane surface: 



PlATECARPUS MUDGEI, Cope. Plates XVI, fig. 3; XVII, fig. 5; XXVI, fig. 3; 

 XXXVII, fig. 7. 



Liodun mudgci, Cope, Proceedings of the Americau Philosopbical Society, 1870, ji. 581. — Hotco- 

 diis mudgci, Cope, J. c, 1871, December. — Rhinosaurua mudgci, Marsh, Americau Jourual 

 of Science aud Arts, 1872, Juue. 



Niobrara chalk of tlie Smoky Hill River. 



