RHAMPHORHYNCHID^. 



29 



fig. 4) was obtained from the Kimeridgian of Bavaria, and 

 is preserved in the Museum at Bonn. It is figured bj 

 Goldfuss in the ' Nova Acta Ac. Caes. Leop.-Car.' vol. xv. 

 pt. i. pis. 7-9 ; by Buckland in his Mineralogy and 

 Geology (Bridgewater Treatise), pi. xxii. ; by Meyer in the 

 ' Fauna der Yorwelt — Rept. Lith. Schiefer,' pi. v. figs, 1, 

 2 ; and by Owen in his ' Cretaceous Reptilia ' (Mon. Pal. 

 Soc), pi. xxvii. Presented by K. Murchison, Esq., 1872. 



43437. Cast showing the left side of the skull of the preceding 

 specimen. Figured by Meyer, op. cit. pi. v. fig. 3. The 

 symphysis of the mandible shows a median descending 

 ridge on the ventral surface. Same history. 



Genus RHAMPHORHYNCHUS, Meyer 1 . 



Teeth usually not extending to the extremities of the jaws ; those 

 of the mandible subequal in size, and all inclined forwards ; nares 

 moderate, and separated by a broad bar from preorbital vacuity ; 

 alveolar border of premaxilla concave, and of mandible convex, and 

 inferior border of latter concave ; scapula and coracoid separate or 

 anchylosed ; neck thick, and of moderate length ; proximal tarsals 

 usually distinct, but anchylosed to the tibia in R. grandis ; either 

 four or five functional digits in pes, the fifth digit having two 

 phalangeals. Pubis narrow, elongated, and bent, and uniting in a 

 bony symphysis ; ischium anchylosed to ilium ; sacrum with from 

 three to five vertebras. Hind limb usually comparatively weak ; and 

 the long tail with a terminal membranous expansion (fig. 5), and 

 the vertebras bound together by ossified tendons. 



Rhamphorhynchus longicauda(Miinster 2 ). 



Syn. Pterodactylus longicaudus, Miinster 3 . 



Ornithocephalus longicaudatns, Wagner 4 . 

 Rhamphorhynchus longicaudatus, Amnion 5 . 



The type species. Of small size, and perhaps without an eden- 

 tulous interval at the extremity of the upper jaw. The length of the 

 cranium is 0,043 ; and the scapula and coracoid are distinct, and 

 approximate in structure to those of Pterodactylus. 



Bab. Europe (Germany). 



1 Neues Jabrb. 1846, p. 463. 



2 Ibid. 1839, p. 677. — Pterodactylus. 



3 Loc. cit. 



4 Abh. k.-bay. Ak. Wiss. vol. vi. pt. i. p. 190(1851). 



5 Corr.-blatt. Nat. Ver. Regensburg, vol. xxxviii. p. 155 (1884). 



