I 



Plate 4 

 heads from above — mandibles and other parts 



Fig. 34. Monocesta corijU Say — Head. Dorsal view. 



35. Monocesta coryli Say — Labniin and clypeus. 



36. Monocesta coryli Say — Antenna and ocellus. 



37. TrirMMa canadensis Kirby — Head. 



38. Oalerucella lutrola Miiller — Head. Dorsal view. 



39. Monoxia puncticoUis Say — Head. Dorsal view. 



40. Monoxia consputa LeConte — Head. Dorsal view. 



41. Monoxia consputa LeConte — Labrum, clypeus, ei)istonia, antenna, and 



ocellus. Dorsal view. 



42. Galeruca tanaceti Linnaeus — Head. Dorsal view. 



43. tiermylassa fialensis Linnaeus. — Head. Dorsal view. 



44. Agelastica aim Linnaeus — Head. Dorsal view. 



45. Monocesta coryli Say — Tip of left mandible. 



46. Galerucella luteola Miiller — Left mandible. 



47. Monoxia puncticoUis Say — Two setae, small sclerite, and piece nf dark 

 skin. 



48. Monocesta coryli Say — Left mandible. 



49. Trirhabda canadensis Kirby — Left mandible. 



50. Monoxia puncticoUis Say — Left mandible. 



51. Monoxia consputa LeConte — Left mandible. 



52. Monoxia consputa LeConte — Seta. 



53. Galeruca tanaceti Linnaeus — Left mandible. 



54. Sermylassa halensis Linnaeus — Left mandible. 



55. Agelastica alni Linnaeus — Loft mandible. 



47 



