Mamm. 
ZOOLOGICAL RECORD 
FOR 1885. 
MAMMALIA. 
BY 
W. L, ScLATER, B.A., F.Z.S. 
I.—INTRODUCTION. 
There has been no event in the history of Mammals during the year 
1885 comparable to the discovery of the eggs of Ornithorhynchus in 188L 
This discovery, however, has awakened considerable interest in the 
Class Monotremata, so that there are now to be recorded no less than 
fourteen papers relating to the two known forms of this Class— Ornitho¬ 
rhynchus and Echidna. 
Albrecht has published many interesting and highly original papers on 
various points in Mammalian morphology, on the subject of hare-lip and 
its significance (6), and on the question of the generally accepted homo¬ 
logy of the swim-bladder of Osseous Fishes with the lungs of higher 
Vertebrates (7). 
Bardeleben and Baur (14-17, 20-26) have contributed considerably by 
numerous essays to our knowledge of the carpus and tarsus and their 
component bones. 
Trouessart (320) has published another part of his catalogue of Mam¬ 
mals, containing a complete list of all the species of Creodonta and 
Fissiped Carnivora ; and Thomas (312) has put together all that is known 
of the different forms of Echidnido ?, and reduced the number of species 
to two. 
But it is in Palaeontology that the greatest activity has been shown 
during the past year. Much work has been done and many new 
species have been described by Lydekker, in Europe ; by Cope, in North 
America; and by Ameghino, in South America. 
1885. [vol. xxii.] b 1 
