tow.] APPENDIX III. 79 J 



brown in color, helpless, with eyes closed. The nest is in a hole 

 lined with grass. The female suckles the young for six weeks, and 

 is assisted in rearing them by the male. 



Delphinapterus catadon, L. White Porpoise. 



Coition takes place under water. The two animals, with a noise as 

 if they were rubbing hard against each other, rise to the water 

 until nearly the whole body is visible, then come in sudden con- 

 tact, and fall asunder. The time of mating is about the middle of 

 June, and the young, one to two in number, are born towards the 

 end of July, when they are from two to four feet long, of a lead 

 color, very active, with open eyes. The female suckles them for 

 at least three months. 



