REPORT OF 

 THE PROSECTOR 



TO THE BOARD OF MANAGERS. 



I 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 : 



Marsupalia 10 Ungulata 2 



Edentata 2 Cetacea 1 



Rodentia 15 Primates 20 



Carnivora 28 Total 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 



