PLATE XXVI. 



Fig. 34. — Ocellar area of Notogonia argentata. Note the small, nearly 

 transverse posterior ocelli. 



Fig. 35.— Ocellar area of Tachysphex tarsatus. The posterior ocelli 

 are in a reniform or oblong area. 



Fig. 36. — Ocellar area of Larropsis aurantia. Note the broad ocellar 

 area. 



Fig. 37. — Ocellar area of Lyroda triloba. 



Fig. 38. — Ocellar area of Plenocidus apicalis. 



Fig. 39. — Ocellar area of Tachytes distinctus. Note the long sub- 

 parallel posterior ocelli and the rather narrow ocellar area. 



Fig. 40. — Antenna of Tachytes mandibularis t , to show the convexity 

 of the lower surface of joints 3 to 7. 



Fig. 41. — Antenna of Tachytes distinctus; b, bulb of scape; /, flagel- 

 lum; p, pedicel; s, scape. 



Fig. 42. — Antenna of Tachytes fulviventris ^ , to show the broadened 

 joints 9-11. 



Fig. 43. — Antenna of Plenoculns apicalis ^ . 



Fig. 44. — Basal portion of antenna of Plenoculus apicalis j . 



Fig. 45. — Basal portion of antenna of Plenoculus apicalis j> . 



Fig. 46. — Tip of fore wing of Larropsis psenerugosa ^ (type). 



Fig. 47. — Tip of fore wing of Tachysphex texanus j . 



Fig. 48. — Tip of fore wing of Tachysphex acuta j . 



Fig. 49. — Lateral view of thorax of Notogonia argentata, showing the 

 comparatively long propodeum. 



Fig. 50. — Semidiagrammatic dorsal view of disc of propodeum of 

 Bothynostethus distinctus, showing the character of sculpture. 



Fig. 51. — Lateral view of thorax of Larropsis, showing the compara- 

 tively short propodeum. 



