52 



Omithorhynchus, and burrow. 

 Ortrilborhynchna asleep, Echidna. 



From D. Appleton & Co.'s " Elements of Zoology. Science Series. 



GROUP 57. — family Ornitkorhynchida includes one 

 genus with one species, the wonderful Duck-billed 

 Animal, a view of which is seen here, and specimens in 

 the collection. It has long been suspected that this crea- 

 ture, known to be the lowest form of mammal, or sharing 

 that honor with the next succeeding, not only has bird-like 

 features," but actually does lay eggs. Late investigation 

 proves this to be true. 



Family EcJiidiiidie, has two genera. The ECHIDNA, 

 quite resembling a hedgehog, has similar organization as 

 the preceding, and is with it distinguished as the lowest of 

 mammals in the scale of life. 



ERRATA. 



Page 22, line 3, read Ccrcoleptcs for Cenoloptes. 

 Page 31, line 32, read Mazama for Mamma, 



