ORDER LEPIDOPTERA. 



141 



rudimentary. Moreover, the butterfly needs little food; it 

 only lives long enough to lay its eggs, when it dies. 



By looking at our specimen after the scales have been 

 rubbed off the head, which may be done by a stumpy hair- 



FIG. 169. Butterfly's head, denuded of scales. After Burgess. 



pencil, it will appear somewhat as in Fig. 169 of the 

 Archippus butterfly. This represents a front view of the 

 head: a, a are the antennae; oc, the eyes; d is the front or 

 clypeus, and Ib indicates the upper lip, and md the supposed 

 jaws; ik is the tongue, cut off to show the tube in the 

 middle. How the latter works can be seen by looking at 



ant. 



FIG. 170. Section through the tongue of a butterfly. After Burgess. 



Fig. 170, which represents a cross-view of that of the Da- 

 nais butterfly. The maxillge in some moths, such as the 

 great, green, tailed Luna moth, are short and separate, like 



