396 



MR. F. E. BEDDARD ON HAPALEMUR GR1SEUS. [June 3, 



the colon to the blind extremity was about 3 J inches, the breadth 

 nearly 1| inch. The small csecum of this Lemur recalls that of 

 Arctocebus y , and differs widely from the long tapering caecum of 

 Lemur and the Indrisinae. 



Liver. — The liver of Hapalemur griseus differs somewhat in detail 

 from that of other Lemurs ; the left lateral lobe (fig. 2, L.L.) in most 

 Lemurs appears to be the larger of the four principal lobes ; in 

 Hapalemur griseus it is about the same size as the rest, which are 

 themselves subequal ; the two lateral (L.L., R.L.) lobes are separated 

 by a deep sulcus from the two central lobes (L.C., R.C.); the 



Liver of Hapalemur griseus. 



umbilical fissure (g) extends only about halfway from the free to the 

 attached border of the liver, and the right and left central lobes are 

 almost fused into a single lobe. The Spigelian lobe (S.p.) is large and 

 almost quadrangular in shape ; the caudate lobe (ca) is well developed, 

 and free for three fourths of its extent from the right lateral. 



Viewed from the upper (diaphragmatic) surface the umbilical 

 fissure appears as a notch barely half an inch in length ; the cystic 

 notch is conspicuous, and partially separates off a cystic lobe which is 

 about one third of the size of the right central. The gall-bladder (g.b.) 

 is large and lies in the cystic fissure ; as in Lemur the cystic duct 

 arises from that end of the gall-bladder which is turned towards the 

 free edge of the liver ; the fundus of the gall-bladder lies towards the 

 attached border of the liver, the normal position of the organ being 

 therefore reversed ; the cystic duct is much contorted at its com- 

 mencement. 



This curious position of the gall-bladder is stated by Prof. Flower 2 



1 Huxley, P. Z. S. 1864, p. 29 (fig. 9). 



2 "Lectures on Comparative Anatomy of the Organa of Digestion of the 

 Mammalia," Med. Times and Gazette, 1872. 



