511 



row of six teeth on a dorso-lateral position, the ventral spines 'lo 

 not proeeed to the left side as in /. nigroceps and there are more 

 spines on the right side at the apex of the ventral row. The genital 

 styles are like those of 7. nigroceps. Head, antennae, legs, abdominal 

 pleura, and middle of tergites light brown or yellow; face, vertex, and 

 genae dark brown between carinae; jironotum. mesonotum, front and 

 middle coxae, abdominal sternites, lateral portions of tergites, pvgofer, 

 and aj)iees of tarsi' dark brown. Tegmina hyaline, light yellow, veins 

 same color, granules minute, sparse, bearing black macrotrichia, a small 

 brown spot at apex of clavus and a minute one at apex of costal cell. 

 Female. Brachypterous; length 3.6 mm.; te'gmen 2.5 mm. Hind 

 femora not reaching to apex of abdomen; tegmina reaching to apex of 

 seventh abdominal tergite. Uniformly light brown or yellow, the spot 

 at the ajiex of costal cell slightlv larger than m the male. 



Ridge south of Tao valley. Maui, elevation 2000 feet, on 

 Diibaiifia planta^'uica {Tinibcrlake, July. 1919). 



This is a ^laui representative of /. ii'r^roceps of Lanai : the 

 lighter color of both sexes as well as the difference of aedeagus 

 and anal spines makes them easy to separate. A figure of the 

 aedeagus of /. nigroceps is given for comparison. Fig. 7. 



Ilburnia nesopele '^l'- n- Fig- 6. a. 



Male. Brachypterous; length 2.4 mm., tegmen 1.6 mm.; length of 

 vertex 1.3 times the width, sides jjarallel, apex slightly curved, subequal 

 to base in w-idth, base slightly anterior to middle of eyes ; length 

 of face twice the width broadest on a])ical half, carinae obscure, 

 median carina simple slightly thickened at base; antennae reaching 

 to mid<lle of clypeus, second .joint l.S times the length of first; 

 tegmina reaching to eigliHi tergite; hind femora reaching slightly 

 beyond apex of abdomen, hind tarsi nearly as long as tibia, first tarsus 

 slightly longer than other two together. Opening of pvgofer slightly 

 longer than wide, mai'gins entire, a slight jirominence on medio-ventral 

 edge, dorsal emargination wide, shallow, not embracing more than half 

 the anal segment ; armature on diaphragm shield-shape, prominent, 

 ridged down the middle, the sides strongly shagreen ; anal spines large, 

 fiat, narrow, bases contiguous, slightly diverging at apex ; genital styles 

 reaching two-thirds to anal segment, broad. Hat, broadest on basal 

 half, apex truncate with angles projecting, the outer one more so than 

 the inner; aedeagus near to that of I. pele (Kirk.) but tlie base larger 

 and the spines on the dorsal aspect continued on to the right side to 

 near base, the ventral spines forming a single row. 



Dark brown; vertex, carinae of face and clypeus, antennae, femora, 

 tibiae and tarsi of front and middle legs, tibiae and tarsi of hind 

 legs, and basal portion of abdomen light brown or yellow. Tegmina 

 hyaline, slightly fuscous, veins slightly darker, a small dark mark at 



