90 



times the width, slightly widened towards the apex which is 

 slightly rounded, base slightly in front of the middle of eye; 

 length of face twice the width, sides slightly curved, median 

 carina simple; antennae reaching slightly helond the liase 

 of clypens, first joint half the length of second. Tegmina 

 reaching base of fifth segment; hind femora considerably 

 longer than tarsi, first tarsus longer than the other two together. 

 Tt is i30ssible that this comes into the same group as I. brid- 

 wclU and I. tetramalopii but there are several distinct differ- 

 ences in structure. 



I. monticola (Kirk.) PI. IV, f. 10. 



Vertex slightly longer than wide, apex slightly and broadly conical ; 

 length of face more than twice the width, median carina simple ; anten- 

 nae reaching to the base of the clypeus or slightly beyond, first joint 

 about half the length of second. 



The genitalia are close to those of I. Icahi (Kirk.) ; the pygofer is 

 slightly narrower, the anal spines large and diverging with a lobe from 

 the anal segment basad of the spines, the genital styles are bent slightly 

 more in the middle than is the case in /. Icahi; aedeagus figured. 



A long series of both sexes and nymphs from Haleakala, 

 Maui, 7000 feet elevation, (BridiveU, August 1918) feeding 

 on Coprosma montana. 



I. rubescens (Kirk.) 



Five males and one female, Haleakala, Maui (Puu Nia- 

 niau) on the phyllodia of Acacia Jroa (B rid well August 1918). 

 I. bridwelli n. sp. PI. Ill, f. 3, PI. IV, f. 20. 



Male. Brachypterous ; length 2 mm. ; tegmen 1.5 mm. Length of 

 vertex nearly double the width (i to 1.9), sides subparallel, apex slightly 

 conical, base well behind the middle of eye ; length of face nearly two 

 and one-half the width (i to 2.4), sides slightly curved, median carina 

 simple; antennae reaching slightly beyond base of clypeus, first joint half 

 the length of second ; hind femora not reaching beyond apex of abdomen, 

 hind tarsi nearly equal in length to the tibiae, first hind tarsus equal to 

 the other two together, tegmen reaching to anal segment. 



Opening of pygofer large, wider than long, sides well rounded, dorsal 

 emargination large, embracing about half the anal segment ; spines on 

 anal segment large, stout, not near together; genital styles flat, broad, 

 widest at apex which is truncate with the lateral angles produced, nar- 

 rowest in middle, (in a flat, lateral view the narrowness is not so great) ; 

 aedeagus flattened laterally, rounded at apex, functional orifice near apex 



