No. 409.] THREE POLYMELOUS FROGS. 27 
and remain comparatively undeveloped. Should my interpre- 
tation be correct, we have in this frog a hitherto undescribed 
degree of polymely. 
I wish to express my thanks to Dr. C. B. Davenport, under 
whom this work was done. 
HULL ZOOLOGICAL LABORATORY, 
February 17, 1900. 
BIBLIOGRAPHY. 
The author has but one reference to add to those given in Bateson’s 
Materiais for the Study of Variation, p. 555. 
WasHBURN, F. L. A Peculiar Toad. Amer. Nat, Vol. xxxiii. 
pp. 139-141. 1899. 
