PERCOMOEPHI. 753 



Tbichophanes foliaeum Cope, 



Bnlletin U. S. Geol. Survey Terrs., IV, p. 73, 1878. 

 Plate LIX; fig. 4. 



The scales extend on the cheeks and abdomen ; there are nine or ten 

 longitudinal rows above the vertebral column, and about sixteen below it. 

 The head is moderately elongate, and deep behind. The mouth is subter- 

 mlnal, and the extremity of the premaxillary bone extended backward 

 would reach about half way to the orbit. Ribs stout; neural spines slender. 

 The interneurals visible number eleven, but the posterior part of the dorsal 

 fin is wanting. These bones have thin anterior and posterior laminar ex- 

 pansions. The anterior interneural strikes the fifth vertebra from the head; 

 between this one and the first interhse.mal there are nine vertebrae. 



Measurements. 



M. 



Length of the head to first vertebr.a 0.028 



Depth of head posteriorly 022 



Length of mandibular ramus 013 



Length to scapula 035 



Length to dorsal fin 050 



Depth at middle of dors.al fin 023 



From the Tertiary shales of Florissant, Colorado. Obtained by my 

 friend Dr. S. H. Scudder, of Boston, collaborator of the United States Geo- 

 logical Survey of the Territories. 



The Triclioplianes foliarum is represented by a much larger individual 

 than the T. hians, but which wants the posterior part of the body, including 

 the caudal and part of the anal fin. The generic and family characters are, 

 however, very clearly visible in the anterior portion of the skeleton. 



Trichophanes hians Cope. 



Proceed. Amer. Philos. Soc, 1872, p. 480. Annual Eeport U. S. Geol. Surv. Terrs., 1872 (1873), p. 642. 



Plate LIX ; fig. 3. 



Vertebrse, D. 9 ; C. 15 ; six between interneural spine of dorsal, and 

 interhaemal of anal fin. Radii, D. II. (?) 6 (soft rays somewhat injured) ; 

 A. II. 7 ; V. and P. not all preserved ; caudal rays numerous, forming a 

 deeply bifurcate tin. The ventrals reach a little over half way to the anal, 



48 C 



