The GraspedosoTriatidse of North America. 95 



Scoterpes copei. 



Fig. 12. — Genitalia of male, after Packard. 



Fig. 13. — Same, less magnified; also ninth legs, after Packaid. 



Zygonopus virhitei. 



Fig. 14.— Antenna, X 27. 



Fig. 15.— First leg of male, X 50. 



Fig. 16. — Second leg of male, X 50. 



PLATE II. 

 Zygonopus -wliitei. 



Fig. 17. — Fonrth legs of male, X 50. 

 Fig. 18.— Sixth legs of male, X 50. 

 Fig. 19.— Twelfth leg of male, X 50. 

 Fig. 20. — Genitalia of male, anterior face. 

 Fig. 21. — Same, posterior face, also ninth legs. 



Trichopetalum album. 



Fig. 22. — Antennse of male, X 105. 

 Fig. 23.— First leg of male, X 105. 

 Fig. 23a. — Second leg of male, X 105. 

 Fig. 24.— Third leg of male, X 105. 

 Fig. 25.— Fourth leg of male, X 105. 

 Fig. 26.— Fifth leg of male, X 105. 

 Fig. 27.— Seventh leg of male, X 105. 

 Fig. 28.— Tenth leg of male, X 105. 

 Fig. 29. — Norma] leg of male, X 105. 



PLATE III. 

 Trichopetalum ocellatum. 



Fig. 30. — Head and three segments, after Packard. 



Fig. 31. — Antenna, after Packard. 



Fig. 32. — Eye, after Packard. 



Fig. 33. — Segments, lateral view, after Packard. 



Fig. 34. — Segments, dorsal view, after Packard. 



Fig. 35. — Last six segments, lateral view, after Packard. 



Trichopetalum album. 



Figs. 36 (X 312), 37 (X 250), 38, 39, 40 (X 312), 41.— Apices of male geni- 

 talia, diiSerent views, from different specimens. 



Fig. 42. — Male genitalia, anterior face, X 187. 



Fig. 43. — Same, posterior view, also ninth legs. 



Fig. 44. — Distal portion of gnathochilarium X 160. 



Fig. 45. — Eye. 



Trichopetalum comutum. 



Figs. 46, 47 (X294), 48 (X 333).— Apices of male genitalia, different 

 specimens and views. 



Fig. 49. — Male genitalium, lateral view. 



