HOMCEOSAUEID-T]. 291 



Family HOMCEOSAURIDiE. 



The type family. Body of a normal lacertiform type ; with not 

 more than twenty-six presacral vertebras. Skull comparatively short 

 and wide, with broad facial portion, oval nares, and a distinct post- 

 orbital bar. No tusk-like teeth in premaxilla or mandible. Pha- 

 langeals of fifth digit of pes of the normal Squamate number. 



Genus HOMCEOSAURUS, Meyer \ 



The type genus. Skull short, rounded, and broad, with large 

 orbits. Twenty-three presacral vertebras ; tail long, with 40 

 vertebras. 



Homceosaurus maximiliani, Meyer 2 . 



The type species. Skull very broad ; 17 dorso-lumbar vertebrae ; 

 tail slender ; manus not longer than forearm ; pes short, with slender 

 claws. 



Hab. Europe (Germany). 



39355. Cast of a slab of lithographic limestone containing the nearly 

 entire skeleton. The original was obtained from the 

 Kimeridgian of Kelheim, Bavaria, and is described and 

 figured by Meyer in his ' Fauna der Tor welt — Kept. Lith. 

 Schiefer/ pp. 102, 103, pi. xi. figs. 1-3. Purchased, 1865. 



37012. Slab of lithographic limestone showing the impression or 

 actual bones of the nearly entire skeleton ; from the Kime- 

 ridgian of Soleuhofen, Bavaria. Only an obscure impres- 

 sion of the skull is preserved. Purchased, 1862. 



Genus ARDEOSAURUS, Meyer 3 . 



Distinguished from Homceosaurus by the limbs being shorter in 

 proportion to the length of the body, and apparently by the arrange- 

 ment of the first row of tarsals. 



Ardeosaurus brevipes, Meyer 4 , 

 Syn. Homceosaurus brevipes, Meyer 5 . 



The type species ; of small size. 

 Hab. Europe (Germany). 



1 Neues Jahrb. 1847, p. 182. — Homosatmts. " Loc. cit. 



3 Fauna der Yonvelt— Kept. Iith. Sohief. p. 100 (1600). 



* Neues Jahrb. 1S55, p. ooo. — HomaoMicru-: s Loc. cit. 



