4 OEJS'ITHOSAURIA. 



vacuity apparently not separated ; cervical vertebrae comparatively 

 short. 



Ptenodracon brevirostris (Sommerring ] ). 



Syn. Ornithocephalus brevirostris, Sommerring ' 2 . 

 Pterodactylus meyeri, Miinster 3 . 

 Ornithocephalus meyeri, Wagner 4 . 



Zittel (' Palseontographica,' vol. xxix. p. 79) suggests that the 

 so-called P. meyeri is not distinct from the present species, which 

 is fully confirmed by a comparison of the type specimens of the 

 latter with his figure. The species is the only known example of 

 the genus, and is about the size of a sparrow ; the length of the 

 cranium being 0,028. 



Hah. Europe (Germany). 



42736. A slab of lithographic limestone, containing the greater 

 (Fig.) part of the skeleton ; from the Kimeridgian of Kelheim, 

 Bavaria. Figured by von Meyer in the ' Fauna der 

 Yorwelt — R,ept. Lith. Schief.' pi. iv. fig. 2, as Ptero- 

 dactylus meyeri, of which it is the type. 



Van Breda Collection. Purchased, 1871. 

 39352. Cast of the preceding specimen. Purchased, 1865. 



Genus PTERODACTYLUS, Cuvier 5 . 



Syn. Onithocephalus, Sommerring 6 . 

 Macrotrachelus, Giebel 7 . 

 Diopecephalus, Seeley 8 . 



Skull slender and elongated into a narrow rostrum,, of which the 

 alveolar margins are straight ; teeth placed vertically, and none 

 extending behind the middle of the narial aperture; cervical 

 vertebrse frequently much elongated ; scapula and coracoid separate ; 

 pubis 9 short and rounded, without bony symphysis ; pes with four 

 functional digits, and frequently an aborted fifth digit with only 

 one phalangeal 10 . None of the species attain a very large size. 



1 Denkschr. k. Ak. Munchen, vol. vi. p. 89 (1820). — Ornithocephalus. (Bead 

 1816.) * Loc. cit. 



3 Neues Jahrb. 1842, p. 35. 



4 Abh. k.-bay. Ak. Wiss. vol. vi. pt. i. p. 167 (1851). 



5 Ann. d. Museum, vol. xiii. p. 424 (1809). — Tterodaetyle. 



6 Denkschr. k. Ak. Miinchen, vol. iii. p. 126 (1812). 



7 Allgemeine Palaontologie, p. 231 (1852). 



» Ann. Mag. Nat. Hist. ser. 4, vol. vii. p. 35 (1871). 



n Prepubis, or epipubis of some writers. 



10 Zittel, ' Palacontographica,' vol. xxix. p. 62 (1882). 



