Mouths of Insects. 



117 



65, e) and lower or labium. The lower (/) represents 



the second pair of max- 



illae in the lobster and 



crayfish, which here are 



united together, but 



sometimes as in cock- 



roaches (fig. 64) and 



locusts remaining sepa- 



rate. The labium bears a 



pair of feelers called labial 



palps (k). Between the 



and the labium Under side of mouth of Cockroach. 



f . maxillary palp ; i, ligula ; * para- 



are tWO pairs Of ja\VS gloss* ; k, labial palp ; i, cardo of 



placed vertically, so that 



FIG. 65. 



hinge ; 2. stipes ; 5, maxilla ; 6, galea, 

 or sensitive process of maxilla. 



FIG. 66. 



Upper side of head of Cockroach. 



I, epicranium, or top of the head ; d, clypeus; 



e, labrum ; f, mandibles : A, antennae. 



Mouth of Flea. 

 Showing the slender style- 

 like labrum between the 

 long mandibles medially, 

 and the labial and max. 

 illary palps laterally. 



in acting they move in a horizontal plane. The uppei 



