(6) T. formosa (Kirkaldy). 



Ossa formosa Kirkaldy, H. S. P. A. Ent. Bui. I., p. 413. 



The deep emargination of the pronotuni and the presence of 

 apical cross-veins as well as the cross-veins places this species in 

 Tamhinia; it has the head narrowing from front of eyes to apex 

 and conies near to capitata. Width of vertex to length as 1 

 to 1.4. 



(7) T. venusta (Kirkaldy). 



Ossa venusta Kirkaldy, 1. c. 



This species is congeneric with formosa, the head is not 

 gradually narrowed, the length of vertex subequal to width. 



Trichoduchus Bierman. 



The species I add to this genus agrees in its generic char- 

 acteristics with hiermani; there is a small, pointed tubercle in 

 the middle of the clypeus. I follow Bierman in placing this 

 genus in Tropiduchidae, but it is so like Ommatissus that I con- 

 sider they must eventually be placed next to one another. Par- 

 uzelia has a neuration approaching this genus. 



(1) T. hiermani sp. nov. ( 9 ) 



Yellowish, marked with brown. Head and thorax yellowish, 

 clypeus and genae below antennae brown, legs and under side of 

 thorax speckled with brown; abdomen yellowish mottled with brown, 

 a round shiny black spot on pleura of penultimate segment. Tegmen 

 reaching slightly beyond end of abdomen, very irregular, disk convex, 

 the disk of each individual cell somewhat concave, the veins elevated; 

 centrally dark brown to black, with yellow veins, margin lighter 

 brown, colorless at apices of veins; three round vitiline spots, one 

 in each of the first and second median cells and the third over the 

 radia; wings totally absent. 



Last dorsal plate emarginate in middle where anal segment is 

 situated, the sides of emargination projecting as a rounded plate on 

 each side of anal segment. Anal segment short, anus in middle, apex 

 shallowly emarginate; sheaths of ovipositor broad, rounded at apices, 

 which turn slightly upward. 



Length 3.5 mm. ; tegmen 2.50 mm. 



Hal>. ^Macao, China. 



