Rhvnehart — Life- History and Bionomics of the Flax Flea-Beetle. 541 



Fig. 



28. Eight antenna of larva ; dorsal view, (x 600.) 1, 2, 3, segments ; 



spr, sensory projections. 



29. Eight mandible ; inside view, (x 600.) abd, abductor muscle; add, ad- 



ductor muscle ; cd, condyle. 



30. Left mandible ; inside view, (x 600.) Similar lettering. 



31. Eight maxilla ; ventral view. (x600.) m, cardo ; ^^a/, galea ; tec, laeinia ; 



mp, maxillary palp ; p/m, maxillary palpifer ; st, stipes. 



32. Hypopharynx and maxillae ; inside view, (x 375.) 



33. Left maxilla ; inside view, (x 600.) gal, galea ; hyp, hypopharynx ; 



lac, lacinia ; mp, maxillary palp ; p/m, maxillary palpifer. 



34. Labrum and clypeus ; dorsal view, (x 520.) cl, elypeus ; pi, punctures 



with minute bristles. 



35. Clypeal punctures and bristles. (Very highly magnified.) 



36. Epipharynx. (x 520.) 



37. Labium; ventral view, (x 600.) hyp, ti^ of hypopharynx; %, ligula; 



12), labial palp; pfl, labial palpifer; me, mentum ; sm, submentum. 



Plate XIX. 



38. Female pupa; ventral view, (x 65.) 



39. „ „ ; dorsal „ (x 65.) 



40. „ „ ; lateral „ (x 65.) 



41. A 

 42. 

 43. 

 44. 

 45. 



lal segments of female pupa; ventral view, (x 125.) 



„ male „ ; dorsal „ (x 125.) 



„ male ,, ; lateral „ (x 125. 



„ male „ ; ventral „ (x 125. 



„ female „ ; lateral „ (x 125.) 



