﻿139 



The genital styles are large and of peculiar form. The oedeagus 

 seems to be double, or at least to have two hook-like processes. 

 The nymph is figured on PI. XI, figs. 3-4. 



2. paclficiis sp. nov. 

 PI. XV, figs. 4-5. 



Pale yellow, a broad whitish median line down the middle 

 from head anteriorly to hind margin of scutellum very narrowly 

 bordered with orange-yellow. Frons, between the rather broad 

 whitish keels, fuscous, this being visible dorsally. Mesopleuron 

 with a black dot. Tegmina hyaline, tinged with yellow, veins 

 pale yellow, fuscous at the apices of the apical veins. Eyes red- 

 brown. Head much shorter than in 5". agamo psyche, dorsally 

 very slightly longer than the pronotum medially. 



Male : pygophor yellow, emarginate ventrally. 



Profile sinuate. Anal tube prominent, with a downwardly 

 directed spine on each side far down. Genital styles contiguous 

 at base, diverging thence, spined apically. Oedeagus elongate, 

 subascendant, with a recurved process near the apex. 



Female: pygophor yellow, ovipositor sheath paler. 



Length (male) 4, (female) 4^8 niill. 



Hab. Viti Levu, Rewa (Mar., M.), Navua (Feb., M.), Ba 

 (Jan., M.), (Muir's Nos. 54 and 140), on Saceharum offlcinarum 

 and grass. 



Saceharosydiie, gen. nov. 



Closely allied to Sfejiocraitiis, but whereas, in the latter the 

 radial vein forks nearer to the base than does the brachial, in 

 Saceharosydiie the reverse is the case, the radial fork in the lat- 

 ter being very short. There are 7 apical cells, the 4th being 

 pedicellate. The head dorsally is very similar to that of Sfeno- 

 craiiits, but is angular in profile, the latter being rounded. In 

 profile, the head is very similar in appearance to that of Tropi- 

 docephala. but the latter is at once separated by the absence of 

 cross keels on the vertex. Tibial spur broad, usual type with 

 many small teeth. Type saecharivora (Westwood). 



I. saecharivora. 



Aphis sacch-ri (p.) Anon., 1833 Mag. Nat. Hist.. VI 407, f. 

 54b. [incorrect] — not described. 



