620 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 50. 



Plate 8. 



Fig. 7. Achorutes tigrina, eyes of right side, X 285. 



8. Achorutes tigrina, left fore foot, X 450. 



9. Achorutes tigrina, dens and mucro of right side, X 450. 



10. Achorutes copiosus, left mid foot, X 350. 



11. Achorutes copiosus, left mucro, X 840. 



12. Achorutes copiosus, right mucro, X 840. 



13. Achorutes copiosus, anal spine, X 200. 



14. Achorutes copiosus, dorsal setae of metathorax, X 220. 



15. Achorutes maturus, right postantennal organ, X 840. 



16. Achorutes maturus, sense organ of third antennal segment of right side, X 840. 



17. Achorutes maturus, left hind foot, X 840. 



18. Achorutes maturus, left mucro, X 840. 



19. Achorutes maturus, right mucro, X 840. 



20. Achorutes maturus, anal spine, X 840. 



21. Achorutes maturus, dorsal setae of first abdominal segment, X 2(10. 



Plate 9. 



Fig. 22. Achorutes hrevispinus, right postantennal organ, X 1640. 



23. Achorutes hrevispinus, right postantennal organ, X 1120. 



24. Achorutes hrevispinus, left fore foot, X 422. 



25. Achorutes hrevispinus, right mucro, X 1120. 

 20. Achorutes hrevispinus, right mucro, X 1120. 



27. Achorutes hrevispinus, anal spine, X 504. 



28. Achorutes hrevispinus, dorsal setae, X 346. 



29. Achorutes packardi, right postantennal organ, X 1120. 



30. Achorutes packardi, right hind foot, X 520. 



31. Achorutes packardi, left dens and mucro, X 520. 



32. Achorutes packardi, left anal spine, X 386. 



33. Achorutes packardi, dorsal setae of first abdominal segment, X 386. 



Plate 10. 



Fig. 34. Achorutes packardi, var. dentatus, left hijid foot, X 290. 



35. Achorutes packardi, var. dentatus, lateral aspect of left mucro, X 390. 



36. Achorutes packardi, var. dentatus, lateral aspect of left mucro, X 390. 



37. Achorutes packardi, var. dentatus, lateral aspect of left mucro, X 390. 



38. Achorutes packardi, var. dentatus, dorso-lateral aspect of right mucro, X 390. 



39. Achorutes packardi, var. dentatus, dorsal aspect of right mucro, X 390. 



40. Achorutes packardi, var. dentatus, left anal spine, X 82. 



41. Achorutes packardi, var. dentatus, dorsal setae of first abdominal segment, X 



110. 



42. Achorutes socialis, eyes of left side, X 200. 



43. Achorutes socialis, right postantennal organ, X 840. 



44. Achorutes sodxilis, olfactory hairs of fourth antcnual segment of right side, X 



200. 



45. Achorutes socialis, sense organ of tliird antermal segment of left side, X 840. 



46. Achorutes socialis, right hind foot, X 5S0. 



