XXX 



INTRODUCTION. 



Sylvian gyri (i, i') may be incomplete, as was found to be the case on 

 one side of a brain of Icticyon venations, as here figured, and sometimes 

 the sagittal gyrus is longitudinally grooved on its dorsum (as on one 

 side in the figure) or on its inner side. The olfactory lobes are very 

 large, as might be expected in animals with so acute a power of smell. 



Fig. 15. 



Fig. 16. 



Fig. 15. Brain of Icticyon venaticus, nat. size (after Flower). Dorsum : C, crucial 

 sulcus ; s, sagittal gyrus ; 7n, parietal gyrus ; i, second gyrus. 



Fig. 16. Brain of Icticyon venaticus, nat. size (after Flower). Lateral view : C, crucial 

 sulcus; S, Sylvian fissure; i', first gyrus; ?', second gyrus; m, parietal 

 gyrus ; s, sagittal gyrus. 



The generative organs are remarkable for their salient prostate, and 

 for not possessing Cowper's glands. The ossicle is of considerable size, 

 straight and grooved. 



The ovum is spindle-shaped at an early period, as is also the umbi- 

 lical vesicle. 



The placenta has the form and structure normal in the Carnivora, but 

 its maternal portion cannot be so well defined and separated as in the 

 Felidce.- 



For further anatomical details, to describe which would be foreign to 



