68 



Amphibia Anthracosauridce. 



Capita saurus and Metoposaurus occur in the Upper Trias of 

 Stuttgart ; in the former the orbits are elliptical, and approxi- 

 mate to the parietal foramen ; in the latter they are oval, and 

 situated in the anterior half of the skull, and widely separated 

 from one another. (Figs. 88, 89.) 



FIG. 90. Loxomma Allmani (Huxley). Frontal aspect of cranium with the sculpture 

 omitted; from the Carboniferous of Northumberland. About |, PI'', prefrontal. 

 Other letters as in Fig. 86. (After Miall.) 



In the Anthracosauridw, represented by Loxomma, the skull 

 is vaulted with a broad and somewhat spatulate muzzle ; the 

 length of skull being about 14 inches by 9 inches in breadth. 

 In this family the vertebral column is fully ossified in the 

 adult ; the teeth are deeply infolded ; the mucus-canals 

 between the orbits and the nares form a lyre-shaped pattern, 

 known as the lyra ; and the ventral surface of the body typically 

 has a covering of bony scutes. 



In Wall-case 11 is placed a very beautifully preserved 

 skull of a Labyrinthodont from the Coal Measures of Shrop- 

 shire, referred to Loxomma Allmani (Huxley). The specimen is 

 preserved uncrushed and shows the natural contour of the skull 

 and lower jaw, admirably preserved in clay-ironstone. It was 

 presented by George Maw, Esq., F.L.S., F.Gr.S. 



This family comprises Baphetes, from the Carboniferous of 

 Nova Scotia ; Anthracosaurus and Loxomma, from the Lower 

 Carboniferous of Burdiehouse, near Edinburgh, and the Coal 

 Measures of Lanarkshire and Northumberland; Macromerium, 

 from Bohemia; Eosaurus, from Nova Scotia; Nyrania, from 

 Bohemia ; Ichthyerpetum, from Jarrow Colliery, Kilkenny ; Den- 



