1880.] PROF. FLOWER ON ICTICYON VENATICUS. 73 



only one inch and a half in length, shghtly curved, and with a conical 

 apex. This adds another to the list, given in the notice of the 

 caecum of the Red Wolf, of Canidse with small simple caeca. The 

 liver (figs. 4 and 5) only differs from that of a small Terrier Dog' in 

 a slight variation in the relative size of the lobes, jterhaps not 

 greater than would be met with in comparing this organ in a series 

 of individuals of the same species. 



The anal glands are large, oval, thin-walled sacs, with a muscular 

 covering and smooth lining membrane, each '9 inch in length and 



Fig. 3. 



Caecum of Icticym ; natural size. 



•7 inch wide, and opening by a single orifice, large enough to admit 

 a bristle, at the lateral margin of the anal aperture. 



The brain (figs. 6 and 7, p. 75) is characteristically canine, except 

 that, on the left side, the gyrus immediately surrounding the Sylvian 

 fissure (fig. 6 i\ j')is not marked off by a complete sulcus at its upper 

 curved part from the one above it, and therefore almost reproduces the 

 condition met with in the Felidee, from which form, according to the 

 view of the late Professor Garrod, the canine brain has been derived 

 by complete division of the lower or external gyrus into an outer and 

 inner segment^. Although I have no doubt, after examining a 

 larger number of specimens than were available when attempting a 

 classification and comparison of the cerebral convolutions of the 



.1 SeeP.Z. S. 1879, p. 766. 



2 See " Lectures on the Comparative Anatomy of the Organs of Digestion in 

 the Mammalia," ' Medical Times and Gazette,' June 1, 1872, p. 622, fig. 23. 



^ " Notes on the Visceral Anatomy of Lycaon pic/ns and of Nycfereutes «ro- 

 cyonides," P.Z. S. 1878, p. 377. 



