196 



bifurcate prong with a small short spine below; on right side there 

 are four spines in a small curved row; the dorsal surface, except the 

 basal fourth, is membranous. 



Length 2.9 mm. ; tegmen 2.2 mm. 



$ In structure the same as male; in coloration difficult to sepa- 

 rate from wailupensis. 



Length 3.7 mm. ; tegmen 2.3 mm. 



Hab. Oahn, Pnnahni (Swezey, Jnne, September) ; Kan- 

 mnohona (Mnir). 



This species is named after Dr. David Sharp, whose work 

 on the ''Fauna Hawaiiensis" has placed all Hawaiian ento- 

 mologists nnder a del)t of gratitude. 



PI. 3, figs. 53 a-b; PI. 4, lig, 65. 



28. N. rochi sp. n. 



^ Brachypterous, tegmina not quite reaching apex of abdomen; 

 frontal carina forking about one-third from apex; antennae reach- 

 ing beyond base of clypeus, first joint more than half the length of 

 second. 



Brown, basal half of clypeus lighter than apical portion, carinae 

 of head light brown or yellowish, pro and mesonotum light brown, 

 carinae and lateral portions of pronotum fuscous, pro and meso- 

 pleura dark extending on to coxae, a round mark on metapleura; 

 abdomen brown, base and mark down dorsum lighter, legs light 

 brown, tegmina light brown or yellowish, a dark mark at end of 

 costal cell and end of clavus, basal portion of claval margin dark, 

 veins fuscous with minute granules bearing black hairs. 



Pygophor ovate; anal segment short, without spines; styles in 

 lateral view bent nearly at right angle a little above middle, narrow, 

 truncate at apex; aedeagus forming a boat-shaped trough, the left edge 

 higher than right with five spines near apex and two about middle, 

 right edge without spines, a series of spines forming irregular rows 

 across ventral surface. 



Length 3 mm. ; tegmen 2 mm. 

 2 Slightly lighter in color than male. 

 Length 3.3 mm.; tegmen 2.1 mm. 



Hab. Konahuanni, Oahn (Swezey, February) ; also one 

 9 from Palolo Valley, Oahn (Swezey, January), which agrees 

 in structure but is much lighter in color. 



This species is named after Mr. J. F. Rock, whose work 

 on Hawaiian trees has been a great assistance to Hawaiian 

 entomology. 



PL 3, fig. 56; PI. 4, figs. 71, a-b. 



