1907.] 



OF A FEOU OP THE GENUS MEaALOPHRYS. 



349 



lobes. The left is very much the larger of the two, and it is sub- 

 divided into two lobes of unequal size of which the outer, situated 

 more ventrally, is the larger *. In Pelobates fuscus the right half 

 of the liver is the smaller ; the left lobe is also (as in Megalophrys) 

 composed of two very distinct lobes of approximately equal size, the 

 inner however being in this case rather the larger. The pancreas 

 of both Megalophrys and Pelobates differs from that of Rana as 



Text-fi2-. 99. 



Liver and adjacent viscera of Rana gwjppyi. 

 ff.h. Gall-bladder. L. Liver. Lu. Lung. vi. Mesentery attaching liver to lung &c. 



figured by many authors. Its lowest portion is massive in these 

 two genera; but, wdiereas in Pelobates this region of the pancreas 

 is firmly attached to the stomach, it is attached to the duodenum 

 in Megalophrys. The separation of the stomach from the duodenum 



* Dumeril & Bibron, 'Erpetologie Generale,' t. viii. p. 456, remark also (of 

 M. montana) that the right lobe is but slightly developed and that the left is_divided 

 into two. 



Proc. Zool. Soc— 1907, No. XXIY. 24 



