886 MR. F. E. BEDDARD ON THE [NoV. 26, 



and the subhyoideus, such as is very obvious in the other two 

 Oriental genera. A fine tendinous seam divides the right and 

 left half of the submaxillaris. This seam also in Pelohates^ as 

 in Xenophrys, bifurcates anteriorly and partitions oS' the sub- 

 mentalis from the submaxillaris, which is therefore not covered 

 by the latter as it is in Megalophrys. 



§ The Trcmsverscdis Muscle to (Esophagus. 



This muscle in its large size, place of origin, and insertion, is 

 apparently peculiar to the Pelobatida?. It becomes therefore of 

 very great importance to ascertain its relations in the genera 



Text-fig. 233. 



oe 



%» 



o.d^ 



OEsophageal muscle and neighbouring structures in Megalophrys montana. 



m. The oesophageal muscle at first separate but towards the centre of the figure 

 indistinguishable from the obliquus externus which lies above it; its 

 posterior attachment to the oesophagus is seen to overlie the sacral vertebra, 

 which latter is seen to be free from the ensuing coccyx, od. Oviduct. 

 ce. Qilsophagus. 



Xenojjhrys and Lei)tohrachium. In Xenophrys the muscle is very 

 obvious, and without further dissection appears to be precisely as 

 in the genus Megalophrys. It occupies the anterior half of the 

 abdominal cavity and has a curved, somewhat excavated posterior 

 border a little in front of the kidney. It seems distinctly thinner 

 in proportion than the same muscle in Megalophrys tnontana 

 (text-fig. 233), a conclusion at which I arrive with greater con- 

 fidence, since the two frogs were of the same size. I can see 



