ON THE MyoLoGy OF NOTORYCTES TYPHLOPS, 
WITH COMPARATIVE NOTES. 
By J. T. Witson, M.B., Edin., Professor of Anatomy, 
University of Sydney, N.S. W. 
Priares If. to XV. 
Pane 1. 
Out of the very limited number of specimens of this interesting 
marsupial which had come into his possession Dr. E. C. Stirling 
very kindly placed one at my disposal for the purpose of investi- 
gating its myology. The specimen thus obtained measured 
115 mm. from the tip of the snout to the tip of the tail, the 
measurement being taken along the slight curve of the back. It 
was of the female sex. The abdominal viscera had been removed 
through an incision in the anterior abdominal wall. 
Dr. Stirling was also good enough to afford me an opportunity 
of studying the partially disarticulated skeleton (imperfect) of 
another specimen, and this along with his own excellent descrip- 
tions and figures enabled me to acquire the necessary familiarity 
with the osseous system. 
More recently I have been greatly indebted to Professor 
Baldwin Spencer, of the University of Melbourne, for permission 
to examine the greater part of the muscular system of another 
(male) specimen, a permission generously granted at the kind 
suggestion of my colleague, Professor W. A. Haswell. 
More recently still Professor Spencer has placed another 
specimen at my disposal for the purpose of following out the 
peripheral nerves more satisfactorily than has been possible in the 
single complete specimen from which the following descriptions 
and figures have been chiefly drawn. The results of such a 
further examination I hope to embody in a future contribution. 
I take this opportunity of thanking Mr. J. J. Fletcher for his 
kindness in giving me access to anumber of papers and specimens 
in his possession, and Dr. J. Lorrain Smith, of Cambridge, for 
specimens kindly procured for me in England. 
I also wish to express my indebtedness to Mr. G. H. Barrow, 
lately of the Australian Museum, Sydney, for the care and 
intelligence with which he has executed the drawings from which 
this paper is illustrated. The drawing to an accurately enlarged 
scale of dissections, which were often so minute as to require the 
constant aid of a lens, was by no means an easy task. 
Incidentally, I may mention that I carefully examined the 
marsupium of my specimen. Its hinder limit was 8 mm. in front 
