€0 THE WASATCH AND BKIDGER FAUX^. 



nal teeth, and numerous smaller ones Nvithin them, as in Amia calva. Its 

 superior face exhibits a deep, longitudinal groove, which opens out poste- 

 riorh-. The prootic bone is a half disk, thickened on the straight edge and 

 with concave sides with a round, flat tuberosity on one of them. On some 

 of the cranial bones the ridges are interrupted. 



Six adjacent abdominal vertebra? of this individual are less transveree 

 than the corresponding ones of the P. medius (Leidy) and the anterior ones 

 found with the specimen of P. lilicatus above described. The diapophyses 

 occupy nearly the middle of the sides of the centrum, and are rather 

 elongate. The outline of the articular faces above the level of these 

 processes is a regular wide arch ; below them it consists of three sides, 

 two long laterals which are nearly straight, and a short median inferior one, 

 which is slightly concave. The apices of the articular cavities are above 

 the middle. The inferior surface is marked by two parallel angles, each of 

 which bears a naiTow longitudinal imdivided fossa, which are separated by 

 a concavity. The neurapophysial facets are nearly divided by a median 

 constriction, and are of unequal size. 



Pappichthys corsoni Cope. 



Anuual Report U. S. Geol. Surv. Terrs., 1872, p. G3C. P. tymphtisis Cope, 1. c, 636. 



Plato IV, figs. 21-36. 



Established on a number of vertebrae of an individual which was of 

 much smaller zize than any of the preceding, and about equal to the largest 

 gi-owth of A. calva. The fomi of the dorsal centra is a little wider than 

 deep ; the caudal deeper than wide. What distinguishes these from the 

 vertebrae of the species above described is the lack of distinction between 

 the articular facets of the adjacent neurapophyses. These are almost 

 confluent instead of nearly or quite isolated, as in the P. Icevis and P.plicatus. 



Measurements. 



M. 



Length of centrnra dorsal 006 



Depth iif ciMitnini dorsal 014 



Wiilth c.f (■.ntriiiii dorsal 018 



Depth of I'l'iitriiiu raudul 0115 



Width of cunt rum caudal 0105 



Length of centruiu caudal 0040 



