Plate 4. 

 Labra, Thoraces, and Abdomiua. 



Fig. 37. Cicindela UmbaU.t, thorax, dorsal aspect. 



38. Cicindela Umhalis, thorax, ventral aspect. 



39. Cicindela limbalis, abdomen, dorsal aspect, segments seven to ten. 



40. Cicindela limbalis, fifth abdominal segment. 



41. Amblychila cylindriformis, fifth abdominal segment. 



42. Cicindela limbalis, abdomen, ventral aspect, segments seven to ten. 



43. Tetracha Carolina, fifth abdominal segment. 



44. Omus californicus, fifth abdominal segment. 



45. Omus sequoiarum, labrum, cephalic margin. 



46. Omus californicus, labrum, cephalic margin. 



47. Omus umbipuus. labrum, cephalic margin. 



48. Omus edivardsii, la1)rum, cephalic margin. 



77 



