91 



on ventral aspect, three small curved spines near middle of dorsal aspect 

 and one smaller spine more distad on right and two on the left side. 



Black or brown ; antennae, carinae of head and thorax lighter, legs 

 brownish with darker longitudinal marks, apical tarsi l)rown, Ijase of 

 abdomen, dorsal aspect and edges of pygofer and a narrow stripe down 

 abdominal dorsum yellowish or light brown. Tegmina hyaline slightly 

 opaque or milky white with slight infuscation over the middle area veins 

 concolorous as membrane with black granules bearing black hairs, a dark 

 mark at apex of clavus and another at apex of costal cell and at apex 

 of cubitus. 



Female. Brachypterous ; length 2.4 nun.; tcgmen 1.7 mm. In color 

 lighter than the male, being light lirown. One female, perhaps imma- 

 ture, being yellow with tegmina immaculate except for the black granules 

 which are \ery small. 



JIa/jtfiit. Ilaleakala, ^laiii, about 7000 feet ehn-atiou (near 

 tlie small crater of Pim Xianiau) on Arfjyroxipliiinn rirctsceii^. 

 (BridweU. August 1918). Described from two males, four 

 females and one nvm])h. The nymph is dark l)r.)\vn, lighter on 

 carinae, at base of abdomen and mottled over tegmiual pad-^. 



This species comes near to /. f('frain(ih)/>ii. 

 I. cyathodis (Kirk.) 



The forms associated under this species are of 'gveat interesr, 

 as among them we have considerable (dirotitic but ])i'actically 

 no phallic differences. Among continental faunae the differ- 

 ences found in such a form as cel-e would be considered as of 

 g(ni(M'ic value, judging b_v some of the EurojX'au and Auk ricaii 

 genera. But as my studies of Hawaiian Delphacidae have 

 been primarily based upon tlie genitalia, and as there is no 

 doubt as to the close affinity of the forms in question, I prefer 

 to associate tliciii undci- ci/afliodis as subspcries and varieties, 



After examining the new material from Maui [ consider 

 fuJlaiL'ayi as of only varietal valu(\ The five forms 1 now- 

 class as follows : 



Uhninla cyathodis (Kirk.) 

 var. fuUawayi (Muir) 

 var. lanaiensis (^^fnir) 

 var. iiinrii)frris Muir 

 suli,-p('('ic> I'clrc M nil'. 



