REPORT OF 
THE PROSECTOR 
TO THE BOARD OF MANAGERS. 
BEG to submit the following Report covering the operations 
of the Prosector’s Department for the period from March 
15, 1919 to March 15, 1920. 
The material received from the Society’s Collections con- 
sisted of seventy-eight mammals distributed as follows: 
Marsupaliias (22.ta.cias.n. LOmeUmonlatan 2s eee 2, 
HM GenbAatai BER 6 Boe oa soe Dh ar© CLAG CAR inieh of. os oer ae i 
ROGe mba Tso ok kk oe LWP BIMateS hig ces ase 20 
Carnivioraiem . 26 obi). oe 28 MOA nate Ai She at toisseeeee 78 
Among these the specimen of the newly born pigmy hippopo- 
tamus (Choeropsis liberiensis) proved of especial scientific in- 
terest. Its perfect state of preservation when received and its 
small size made it possible, after the prliminary vascular injec- 
tion, to make a complete and most satisfactory morphological ex- 
amination and record of this rare and important form. Some of 
the more significant results may be tabulated as follows: 
1. The presence of a distinct submaxillary salivary gland 
and of a reduced lesser sublingual complex. 
2. The corrosion of the bronchial system and of the pul- 
monary artery showed a bilaterally symmetrical eparterial sys- 
tem, a condition not heretofore recorded in the Artiodactyl sub- 
order, and of great significance in interpreting the effect of adap- 
tation to aquatic life on the pulmonary architectonics of this 
specialized ungulate. 
3. The gastro-intestinal and reproductive tracts contri- 
buted several new details to the anatomy of the Hippopotamus 
