ATE Ci ee 
THe Anatomy oF AN AustTRaLIAN Lanp Pranartan, By Antuur Denpy, M.Sc., 
F.L.8., Demonstrator anp Assistant Lecturer in Bronoay, in THE UNIVERSITY 
oF Mexsourne. (With plates vil, vi, ix, x.) 
(Read Thursday, August 8th, 1889.) 
CONTENTS. 
PAGE. 
INTRODUCTION .. aye ie as a0 so Od) 
HAsBits.. SO ae fe ar es .. 52 
EXTERNAL CHARACTERS .. ae Sa Fe we. 104 
INTERNAL ANATOMY AND Histonocy i ae oe 
A.—TuHE EPIDERMIS a an a Nod 
B.—THE BasrEMeNT MEMBRANE i Me 50 (OY) 
C.—Tue Muscunar System fo eA oo BY) 
D.—TxHE ALIMENTARY CANAL an oF an (8B 
f.—TxHe GENERAL CoNNECTIVE TissuE or THE Bopy.. 70 
F.—Tur Mucous Guanps .. ae tke ae 
G.—TuE Rop-u1kE Bopres (RHABpDITES) a oa U8 
H.—Txsrt Nervous System .. ae re -. 76 
I.—Tue Hyers Ba of 00 Hid oo |S) 
K.—Tut REPpRoDucTIVE ORGANS O6 ia oa ty 
List or LitpratuRE REFERRED TO Pie ea .. 90 
DESCRIPTION OF PLATES .. a0 ae ae ae gill 
(N.B.—The numbers inserted in brackets throughout the letterpress refer to the ‘‘ List of Literature Referred to.”’) 
INTRODUCTION. 
During the Easter vacation of 1888 Professor W. Baldwin Spencer obtained a few 
specimens of a fine land Planarian, remarkable from the intense blue colour of the 
ventral surface, in the neighbourhood of McMahon’s Creek on the Upper Yarra, 
Victoria. These specimens he kindly placed at my disposal for minute investigation, 
and for this, and for much help and advice during the progress of my work, I desire 
to record my indebtedness to him. 
As the original supply of material proved insufficient for the elucidation of all 
the questions connected with the anatomy and histology of the animal in question, 
I made an expedition myself, about the end of August, 1888, to McMahon’s Creek, to 
search for more specimens. I succeeded in obtaining about half a dozen of the 
worms on this occasion, and later on, in December, I obtained yet more specimens at 
Warburton, also on the Upper Yarra. I was thus enabled to study the animal in its 
living condition, and to investigate its habits, which proved very advantageous in my 
subsequent work. 
