Maskell. — On Psyllidte in Nexo Zealand. 16o 



AnteiinaB and feet hyaline. Genitalia yellow, with brown 

 extremities. Length of body -^^in. ; expanse of wings about 

 ■J-yin. Head broader than long, very slightly depressed in 

 front, and prolonged beneath into two short conical processes. 

 Thorax considerably elevated. Eyes exceptionally prominent 

 projecting at each side nearly half the width of the head, and 

 somewhat recurved posteriorly, the anterior portion with rather 

 large facets, the hinder part smooth. AntennaB of ten joints — 

 the first two short, rather thick, equal and smooth, the rest 

 slender ; the third rather longer than the two first together, 

 the others subequal, and about half as long as the third ; all 

 except the two first are numerously ringed, and the last bears 

 two unequal spines. Forewings very short, scarcely extending 

 beyond the genitalia ; margins slightly and regularly convex, 

 ends rounded ; length of wing two-and-a-half times the breadth. 

 All the veins are nearly straight, being very slightly convex 

 towards the costal margin ; primary stalk of veins rather short, 

 about one-ninth of the length of the wing ; stalk of the cubitus 

 not quite twice as long as the stalk of the subcosta, and only 

 a little longer than the primary stalk ; the first furcation of 

 the cubitus forks again close to the dorsal margin, with one 

 short branch and one long ; the upper secondary branch of 

 the second furcation reaches the margin a very little below the 

 apex ; the clavus is somewhat strong ; stigma existing, and 

 filling the area between the margin and the longer secondary 

 branch of the subcosta, but very faint. Wing sparsely 

 punctate. Hindwing rounded, punctate. Feet presenting no 

 special features. Genitalia, viewed dorsally, apparently end- 

 ing in a single acute point ; viewed sideways, after slight pres- 

 sure, they exhibit four very acute valves, of which two have 

 serratulate margins, and also bear some short hairs. 



Adult male similar in general form and colour to the 

 female, but the elytra are rather longer, extending a little 

 beyond the genitalia. Genital plate broadly rounded pos- 

 teriorly, and tapering to a bluntly-rounded tip with a few short 

 hairs ; posterior processes cylindrical, about three-quarters the 

 length of the genital plate, and bearing several strong, longish 

 hairs, and a great number of black, thick, tubercular papilla?, 

 like strong teeth, arranged in three longitudinal rows. 



Pupa usually stationary, but capable of motion ; whitish 

 and somewhat translucent, the abdomen exhibiting a faint 

 yellow patch ; eyes red ; wing-cases, antennae, and feet white. 

 Length about xein. Head rounded, slightly produced in front ; 

 eyes scarcely prominent ; ocelli two. AntennjE of eight short, 

 rather thick, subequal joints, the last black, conical, and 

 bearing two unequal spines. Eudimentary wing-covers reach- 

 ing only to the second segment of the abdomen. Feet normal, 

 with a pulvillus and two tarsal digitules. Abdomen elongate- 



