360 ARCTURIM. 



ing a distinct genus or subgenus, it will be necessary to 

 employ for them another name, in which case that of 

 Leacia, proposed in 1825 in honour of Dr. Leach, by 

 Dr. G-. Johnston, must be used instead of Arcturus, a 

 step, however, which we by no means considered neces- 

 sary and advisable. 



Mr. Goodsir, who carefully studied the animals of 

 this group, was not acquainted with the characteristics 

 of the male sex in the Arcturi, almost all the speci- 

 mens which he procured having eggs in the marsu- 

 pium, The eggs are pear-shaped and curved, and have 

 a tough external membrane, with a granular white and 

 a light yellow mass towards their centre, which may be 

 of the nature of yelk globules. The ovaries are two 

 elongated white granular bodies on each side and beneath 

 the liver: they open at the third segment of the body, at 

 the extremity of the marsupium. 



