14 ORlSTITHOSAirEIA. 



It is probable that this form is identical with one of the preced- 

 ing species. 



Hab. Europe (England). 



39418. The distal extremity of the ulnar metacarpal ; from the 

 (Fig.) Middle Chalk of Kent. This specimen is the type, and is 



figured by Owen in the ' Trans. Geol. Soc' ser. 2, vol. vi. 



pi. xxxix. fig. 2 (as a bird-bone) ; in his ' British Fossil 



Mammals and Birds,' p. 545, fig. 230 (as Cimoliornis) ; 



and in his ' Cretaceous Reptilia' (Mon. Pal. Soc), pi. xxxii. 



fig. 4. Bowerbanh Collection. Purchased, 1865. 



** Ornithochirus hlavatschi (Fritsch x ). 

 Syn. Cretornis hlavatschi, Fritsch 2 . 



The type of Cretornis. Of medium size ; known by the humerus ; 

 may be identical with one of the preceding. 

 Hab. Europe (Bohemia). 



R. 1031. Cast of the left humerus and some imperfect metacarpals 

 and phalangeals of the wing. The originals, which are 

 the types, were obtained from the Upper Chalk (Iser- 

 schichten) of Zarecka Lhota, near Chotzen, Bohemia ; and 

 are described by Fritsch in the ' Sitz. k. bohm. Ges. Wiss.' 

 for 1880, pp. 275-6, as belonging to a Bird. The hume- 

 rus (described by Fritsch as a coracoid) has a length of 

 0,074 ; and, though somewhat smaller, closely resembles 

 the Wealden specimen No. 2353. 



Presented by Dr. Anton Fritsch, 1887. 



Specifically undetermined specimens from the Chalk. 



41638. The distal extremity of the ulnar metacarpal ; from the 

 (Fig.) Middle Chalk of Kent. Figured in the ' Quart. Journ. 

 Geol. Soc' vol. iv. pi. ii. figs. 4, 5 ; and in Owen's ' Cre- 

 taceous Beptilia' (Mon. Pal. Soc.) pi. xxxii. fig. 5. 



Toidmin-Smith Collection. Purchased, 1869. 



39417. An homologous fragment ; from the same horizon. 



Bowerbanh Collection. Purchased, 1865. 



49005. Part of shaft of a long-bone (? femur) ; from the Lower 



(Fig.) Chalk of Burham, Kent. Figured by Owen, op. cit. pi. 



xxxii. fig. 3. Smith Collection. Purchased, 1878. 



1 Sitz. k. bohm. Ccs. Wiss. for 1880, p. 27f> (1881).— Cretornis. ~ hoc. cit. 



