xv, 2 Crawford: Jumping Plant Lice 147 



the head and abdomen including the genitalia are mutilated 

 beyond recognition of characters. The venation is very similar 

 but not quite identical. In the Indian species the medial vein 

 forks just about midway between the cubitus and radius, while 

 in the Pacific form the furcation of the media is nearer to the 

 radius. It is possible that an unmutilated specimen would show 

 other differences of specific value. 



Tenimber Islands, Larat (Muir), 1 specimen of somewhat 

 doubtful identity, tentatively included here. 



Genus LEPTYNOPTERA novum 



Head deflexed, rather short, vertex broader than long, an- 

 terior angles typically produced over base of antennae; genae 

 scarcely produced into cones; frons not covered by genae. An- 

 tennae rather short, second segment not barrel-shaped but pro- 

 duced distally on lower side. Thorax well arched. Legs long. 

 Forewings membranous, broad distad, cubital petiole and first 

 marginal cell both wanting, the cubitus reaching margin un- 

 forked. Hind wings nearly wanting, exceedingly short. 



Type of the genus, Leptynoptera sulfurea sp. nov. 



The position of this genus is a little doubtful, since it bears 

 similarities to both Trioza and Pauropsylla. The shape of head, 

 exposure of frons, shape of forewing, and some venational char- 

 acters indicate a closer relationship to Pauropsylla than to 

 Trioza. The absence of cubital petiole appears to be not ex- 

 clusively a character of Triozinae, as several unmistakable 

 examples indicate. The unforked cubitus is a characteristic 

 approached more or less closely by several species of Paur- 

 opsylla, suggesting that that vein of the forewing is subject to 

 considerable variation. On the other hand, the same vein in 

 Triozinae appears to be more constant than many other char- 

 acters of the body. The aborted hind wings are characteristic 

 not only of this genus but also of a few species of Trioza, and 

 to a lesser degree of species of Pauropsylla and several other 

 specialized genera. There appears to be a more or less wide 

 tendency in the entire family toward reduction of the hind wings 

 in function, strength, and size. 



Leptynoptera sulfurea sp. nov. Plate I, figs. 5 and 6. 



Length of body, 1.7 millimeters; forewing, 2.6. General color 

 bright sulphur yellow, with four narrow, inconspicuous, brown 

 stripes on mesonotum ; abdominal tergites with white transverse 

 bands; eyes pale whitish; legs pale, femora whitish; antennal 

 segments 1 and 2 yellow, remainder whitish with three black 



