1904.] 



NATURAL SCIENCES OF PHILADELPHIA. 



149 



The liver was divided into four lobes, the gall bladder lying as if 

 in a hole in the cystic fissure.^ The common bile duct passed into the 

 intestine .5 cent, (one-fifth of an inch) from the pylorus, that of the 

 pancreas about an equal distance from the orifice of the bile duct. 



As Tupaia is usually regarded as being in its affinities the most 

 lemurine of the Insectivora, and Tarsius the most insectivoroiis 

 of the lemurs, the alimentary canal of Tarsius spectrum recently 

 dissected by the author (PI. IX, fig. 2) is submitted for comparison 

 with that of Tupaia. It will be observed that in Tarsiiis a distinct 

 coecum is present, though not large, and that the stomach is very 

 small. 



In previous communications made to the Academy, the author called 

 attention to the affinities of Chiromys and the Rodentia,* Galeopithecus 

 and the Chiroptera.^ If the structure of these animals has been cor- 

 rectly interpreted, and it be further admitted that Tarsius stands in 

 a similar relation to the Insectivora, and Loris (Stenops) to the Simiae, 

 the phylum of these various orders would be related to each other 

 somewhat as follows : 



Homo 



Gorilla 



Chimpanzee Pithecanthropus 



Gibbon 



Orang 



CatarrhinsE 



Arctopitheca 



Platyrrhinae 



Rodentia Chiroptera 



.1 I 



Chiromys Galeopithecus Loris 



Insectivora 

 Tarsius 



Lemuravidse 



Adapidse 

 Hyopsodinje 



' Hunter, Essays and Observations on Nat. History, edited by Owen. 

 ^Proc. of Acad. Nat. Sci. Phila., 1900. 

 s Proc. Acad. Nat. Sci. Phila., 1902 



