136 



CATTDATA. 



Genus HELIARCHON, Meyer 1 . 



Tail long ; 13 or 14 presacral vertebrae, of which the characters 

 are unknown : ribs long, with a spine-like posterior projection near 

 the proximal end ; carpus and tarsus unossified. 



Heliarchon furcillatus, Meyer. 



The type and only known species. Length about 0,110 ; skull as 

 long as broad, and pointed anteriorly ; orbits ovoid. 

 Hah. Europe (Germany). 



42731. A split fragment of lignite, showing the impression of the 

 {Fig.) skeleton ; from the Lower Miocene of Rott, near Bonn, 

 Siebengebirge. The type ; figured by Meyer in the ' Pa- 

 laeontographica,' vol. x. pi. ii. figs. 5, 6. 



Van Breda Collection. Purchased, 1871. 



Genus MOLGE, Merrem '\ 



Syn. Triton, Laurenti 3 (non Linn.). 



Skull with a ligamentous or bony fronto-squamosal arch ; tail 

 compressed; carpus and tarsus ossified; ribs without proximal 

 processes ; 5 digits in pes. 



Molge noachica (Goldfuss 4 ). 

 Syn. Triton noachicus, Goldfuss 5 . 



A small and imperfectly known species ; length about 0,064. 

 Hab. Europe (Germany). 



30268. Fragment of lignite, showing the impression of the skeleton ; 

 from the Lower Miocene of Rott, near Bonn, Siebenge- 

 birge. Resembles the specimen figured by Meyer in the 

 * Palaeontographica,' vol. vii. pi. viii. fig. 7. 



Purchased, 1855. 



42759. Fragment of lignite, showing the imperfect impression of the 

 skeleton ; from Rott. Purchased, 1871. 



1 Palaeontographica, vol. x. p. 292 (1863). 



2 Tentamen Systematis Amphib. p. 185 (1820). 



3 Synopsis Eeptilium, p. 37 (1768). 



4 Nova Acta Ac. Cses. Leop.-Car. vol. xv. p. 126 (1831).— Triton. 



5 Loc. cit. 



