514 



procellarh (Kirk.) but I have not seen the aedeagus of this 

 species. 



Ilbumia blackburni (Muir). 



A series of both sexes and young on Clermontia coerulea 

 Hbd., Kona, Hawaii (Tiinberlake, August, 1919). A long 

 series of both sexes and young from 29 miles, Olaa, Hawaii, 

 feeding on Urcra sandwicensis Wedd. {Giffard, August. 1918). 

 One macropterous male from Crater Road, Kilauea, and one 

 macropterous female from 23 miles, Olaa, Hawaii {Giifard, 

 September, 1919). 



Ilbumia waikamoiensis (Miiir). Fig. 2. 



A series of both sexcrs and young on a species of Cyanca, 

 Haleakala, near Puu-o-luau, Maui, elevation 58CX) feet (Tiinber- 

 lake, July, 1919). The former figure of the aedeagus of this 

 species * is reversed. It is slightly concave ventrally ; the spines 

 on the right side are small and form a row near the ventral 

 aspect, those on the left are larger and towards the apex run 

 on to the dorsal surface. 



Ilbumia boehmeriae sp- "■ Fig- 1-, a. 



In general build and coloration this species is similar to 7. pipturi 

 (Kirk.), but there is a difference in the genital-a which is visible 

 externally. The genital styles are much narrower in tlie middle and 

 the inner apical corner considerably produced; the aedeagus is more 

 curved on the apical third, the basal projection is much smaller and 

 narrower at base and the spines on the right side fewer and form 

 a line ; the anal spines are stouter. 



Length of male 2 mm.; tegmen 1.2 mm.; female 2 mm.; tegmen 

 1.3 mm. 



Makaleha Valley, Oahu, on Boehmeria sp. {Swezex, August, 

 1919). Described from five males, one female, and one young, 

 the latter being uniformly' yellow. 



This is a case of a diiTerent food plant being associated 

 with a small but distinct difference of the genitalia while the 

 external body characters and coloration is apparently the same. 



* Proc. Haw. Ent. Soc. IV. 1. (1919) p. 105. Fig. 8. 



