104 PROCEEDINGS OF THE NATIONAl. MUSEUM vol. 76, art. IT 



Plate 3 



Fig. 17. Genitalia of T. phyUophacjae, male, aed, aedeagus ; a h, apical hook 

 of the second genital segment ; a I, apical lobe of the aedeagus ; i o, 

 inner clasper ; I p, lateral process of apical portion of aedeagus ; 

 o c, outer clasper. 



18. Genitalia of T. communis, male. 



19. Genitalia of T. vernalis, male. 



20. Genitalia of T. rufoinandlbulata, male. 



21. Mandible of 2'. popilliavora, female, illustrating the type having 



median groove (m g). 



22. Flexor surface of the hind basitarsus of T. popilliavora, female, illus- 



trating the type having longitudinal groove and lanceolate spines 

 with one spine of the same type at the apex. 



23. Flexor surface of the hind basitarsus of T. communis, female, illus- 



trating the type without longitudinal groove, with prickle-shaped 

 spines, and without one of the same type of spines at the apex. 



24. First segment of antenna of T. hicarinata, female, showing the pro- 



nounced angle at the apex, 



Plate 4 



Fig. 25. Portion of wing of T. vernalis, male, illustrating the type in which the 

 radial cell (r) exceeds the second cubital cell {s cu) in apical 

 extension. 



26. Portion of wing of T. communis, male, illustrating the type in which 



the radial cell (r) does not equal the second cubital (s cu) in its 

 apical extension. 



27. Portion of the fifth sternite of T. popilliavora, male, showing the lat- 



eral denticle (d). 



28. Portion of vertex of T. popilliavora, female, showing tlie median series 



of minute punctui'es {m p). 



29. Portion of the dorsal aspect of pronotum of T. vernalis, female, show- 



ing the vestigial median groove {m g) on the impunctate apex. 



30. Portion of a tergite of T. biseculata, female, showing the row ot 



minute vestigial punctures {v p) caudad of the usual large, api 

 cal punctures. 



31. Ventral aspect of first abdominal segment of T. Mscculata, female, 



showing the lateral grooves {I g) of the first sternite. 



32. Pygidium of a female of the type which is punctate on not more than 



the basal three-fifths, and which has a well-defined impunctate 

 emargination of the punctate portion, i a, impunctate apex ; i e, 

 impunctate emargination. 



