Ornitliosanrlan Gemis Oriiitlioclieirus. 535 



Examples : — 



O. brachyrhinns (Seeley), H. G, Seeley, ' Ornitbosauiia,' 1870, p. 123. 

 0. cuvieri (Bowerbank). Fig. J. S. Bowerbank, Proc. Zool. Soo. 1851, 



p. 15, pi. iv. (lettered longirostvis) ; and E. Owen, Kep. Cret. 



Form. (1851) tab. xxviii. figs. 1-4. 

 O. colorhinus (Seeley). H. G. Seeley, ' Ornithosauria,' 1870, p. 12-4. 

 O. dentatiis (Seeley). H. G. Seeley, ' Oraitho.«auiia,' 1870, p. 119. 

 O. denticulatiia (Seeley). H, G. Seeley, 'Ornithosauria,' 1870, p. 122, 



pi. xii. figs. 8, 9. 

 O. enehorlu/nchus (Seeley). H. G. Seeley, 'Ornithosauria,' 1870, p. 123. 

 O.Jittoni (Owen). II. Owen, Rep. Cret. Form. (1859), Suppl. i. pi. i. 



tigs. 3-5, and eUewhere. 

 O. nasuttis (Seeley). H. G. Seeley, ' Ornithosauria,' 1870, p. 120. 

 O. o.vi/rhmus (Seeley), H. G. Seeley, 'Ornithosauria,' 1870, p. 117. 

 O. polyodon (Seeley). H. G. Seeley, 'Ornithosauria,' 1870, p. 121. 

 O. sedywicki (Owen). R. Owen, Rep. Cret. Form, (1859), Suppl. i. 



pi. i. figs. 1, 2, and elsewhere. 



These are the only specimens that truly come under 

 Seeley's amended definition of the genus Ornitkocheinis^ 

 viz. : — 



I. Teeth prolonged anterior to muzzle. 

 II. Longitudinal ridge on palate. 



To this group, therefore, should be assigned the generic 

 name Ornithocheirns. 



Group No. 2. 



Beaks lanceolate and pointed, compressed laterally and 

 vertically near the tip. Little or no upward curving of the 

 palate. Teeth considerably smaller than in Ornitfiocheirus, 

 uniform in size, and more or less laterally compressed. 

 Moderate rising of alveolar rim, Longitudinal ridge ou 

 palate. 



Examples : — 



O. comp-essirostris (Owen). R. Owen, Rep. Cret. Form. (1851) pi. xxvii. 



fig. 5, and pi. xxviii. figs. 8, 9, 10. 

 O. machaorhi/nchwi (Seeley), H. G. Seeley, ' Ornithosauria,' 1870, 



pi. xii. figs. 1 & 2. 

 O. microdon (Seeley). II. G. Seeley, ' Ornithosauria,' 1870, pi. xii. 



figs. 6, 7. 

 O. ou-etii (Seeley). H. G. Seeley, ' Ornithosauria,' 1870, p. Ho. 

 O. scaphorhynchus (Seeley). H. G. Seeley, ' Ornithosauria,' 1870, p. 119, 

 O. tenuirostris (Seeley). H. G. Seeley, 'Ornithosauria,' 1870, p. 114. 



We suggest that this genus be called honchodectes. 



