LEONARDIUS LAHILLEI. 



39 



The anal aperture is sheltered by an operculum of a trapezoidal 

 shape provided with a lingula which hardly at all, or only a short 

 distance, projects beyond the posterior margin of the operculum. 



I can state notliing with precision about the antcnnic because in the 

 two female specimens which came into my possession they had been 

 broken off; from the small remainder still intact it seems to me, how- 

 ever, that they are alike in conformation with, or only little dissimilar 

 from, the antennae of other species. 



Color of body brown. Length of body a little more than 1.5 mm. ; 

 length of forewing 2.250 mm. ; width of forewing 1.350 mm. ; length 

 of hind wing 1.920 mm.; width of hind wing 1.120 mm. 



mm. 

 coxa 0. 150 



trochanter . 10 



feinur .450 



tibia .540 



1st tarsal joint .220 



2d tarsal joint .130 



claws .070 



coxa .150 



trochanter .100 



femur .450 



tibia .600 



1st tarsal joint . 230 



2d tarsal joint . 130 



claws .090 



Length (total) of the first yair of legs l.GOO mm. < 



Length ( total ) of the second pair of legs 1.750 mm. • 



Length (total) of the third pair of legs 1.940 mm.< 



coxa .150 



trochanter . 1(X) 



femur .450 



tibia . 700 



1st tarsal joint .300 



2d tarsal joint . 1.50 



claws .090 



Habitat. — Collected in Argentina upon a plant not classified. 



This insect is found attached to the upper surface of the leaves, in 

 colonies more or less numerous, and its presence is readily ascertained 

 because of the accumulation of the long dorsal waxy filaments which 

 are interlaced amongst each other in all directions, thus forming a 

 kind of net whose probable office is the protection of the insects from 

 the enemies which infest it. 



On January 18, 1912, Dr. C. W. Hooker sent from Mayaguez, 

 Porto Rico, specimens of an aleyrodid taken on Phoradendron, 

 parasitic on almond. These insects belong to the genus Lconardius 

 herein' described. They agree closely with the description of lahillei 

 given by Leonardi. Slight differences are, however, noticeable. In 



