of the Oraithosdiiruiii U!j;t!npliorliy.ic!m3. '6 



upper j.iw (milt'.ss the latter be broken and deceptive, wliicli 

 seems iinprobiil)le). It bears only seven pairs of teeth, similar 

 to those of the upper jaw. 



The new specimen of Rhamphorhynchan thus sliows that 

 the palate in this <renus is essentially reptilian in all respects, 

 only modified by tlx'. great development of the premaxillary 

 fegion aii.l the small size of the brain-case. It agrees with 

 the palate of the pterodactyl from the Whitby Lias named 

 Scnphotjnathus Pardoni*, so far as the latter can be com- 

 pared. It also sugurests that the so-called undivided poste- 

 rior narial vacuitv describid by Marsh t and Williston J in 

 the Cretaceous Pteranodon is really the fossa into winch th ; 

 actual and normal posterior nares will be found to open as 

 soon as the pteryg(jids and vomers are completely known in 

 that genus. 



II. Rhantphorliynchus loiigiceps^ sp. n. 



(Pi. I. «g. 3.) 



The newly- prepared skull and mandible of a relitively 

 large species of lihamphorhynchix^ in the British Museum 

 exhibit so many difFereitces from the corresponding parti of 

 li. Gemmingi and other known species of this genus that 

 they seem worthy of special description^ They are asso- 

 ciated with a considerable part of the skeleton in a slab of 

 Lithographic Stone from Eichstiidr, Bavaria. The specimen 

 was t-ightly referred to the genus Rhamphorhynchus by 

 Lydekker in 1888 §, but it was at the same time wrono'ly 

 identified with the nw^QxitoiXy known Pterodacty las grandls 

 of Cuvier II, which seems to be a true Pterodactylus or an 

 allied short-tailed genus %. 



The head is exposed irom the right lateral aspect and is 

 shown of the natural size in tig. 3.- The facial region of the 

 skull is seen to be low and much elongated, though its 

 original profile is partly destroyed by crushing from abovt * 

 The rostrum terminates in a sharp point, but its toothless 



* E. T. Newton, " On the Skull, Brain, and Auditory Organ of a new 

 Species of Pterosauriaii (Scaphognathus Furdoni), from' the Upper Li,n 

 near Whitby, Yorkshire,"' Phil. Trans. 1888 B, p. 504, pi. Ixxvii, fig, 4. 



t 0. 0. Marsh, " The Skull of Pteranodou, Amer. Journ. Sci. r:{] 

 vol. xxvii. (I8f<4) p. 424, yl xv. tijr. 3. 



I S. \V. Willi-ston, "On the Skull of Ortu'thostoma," Kansas Uiiiv. 

 Quart, vol. iv. (1^96) p. 197, pi. i. 



§ R. Ivjdekker, Catal. Fobs. Kept. B. M. pt. i. (1888) p. .3.5 (B M 



II (\. Cuvier, O^sem. Foas. ed. L>, vol. v. (182-4) pt. ii. p. 382. 



f K. A. von Zittel. Handb. Palteont. vol. iii. (180U) p. 792; II. G. 

 Seelev, 'Dragons of the .\ir' (1901). p. ItjO. 



1* 



