376 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.51. 



oulum cordate, apex pointing cephalad. Posterior margin incurved; 

 lateral margins dark and wavy. The operculum extends nearly the 

 whole length of the orifice, but is somewhat narrower. Color dark 

 gray. Lingula oyUndrical; it projects to the posterior edge of the 

 vasiform orifioe; end almost flat. Only the part which projects 

 beyond the operculum can be made out; color gray. Antennae, 

 length 0.5 mm. Formula (3, 6), (2, 4, 5), 7, 1. Joint 1, short, flat; 

 joint 2, subpyriform, about twice length of joint 1; joints 3 and 6, 

 equal m length, each about twice the length of joint 2; joints 4 

 and 5, each equal in length to joint 2; joint 7, short, thin, and tapering 

 to a point, about one-third length of joint 6, 



Adult male. — Length, 1.7 mm.; wing, 1.5 mm by 0.77 mm. 



Color, etc., much as in the female. The antennae, however, are 

 enormously developed, being proportionately about twice as long as 

 those in the female. Length, 0.9 mm. Formula, 5, 3, (6, 7,) 2, 4, 1. 

 Joint 5 is very long, being nearly equal to all the others together. 

 Joint 1, short, flat; joint 2, subpyriform, twice length of joint 1; 

 joint 3, fairly long, one and a half times length of joint 2; joint 4, 

 short, less than half the length of joint 3; joint 5, long, ahnost equal 

 to all the other joints together; joints 6 and 7 equal, together about 

 equal to joints 3 and 4. The antennae are heavily ringed, and it is 

 extremely difficult to make out the joints. The under surface of the 

 abdomen covered with a large quantity of white fluff. 



This species occurs in great abundance on the Simul tree {Bombyx 

 malaharicum) in Calcutta. The leaves are thickly covered with the 

 insect. They become yellow and spotted wherever an insect is 

 attached and are ultimately killed. Superficially the insect some- 

 what resembles A. eugeniae Maskell. There are the same radiating 

 dorsal patches and the dorsum is similarly striated. They differ, 

 however, in the shape of the pupa case and the shape of the vasiform 

 orifice. A. simula has a slight marginal fringe and there are four 

 setae on the margin. The radiating dorsal patches are quite different 

 in the two insects. In A. simula these patches are not formed by 

 closely apposed pores, but are yellow bands striated with gray. The 

 thoracic radial patches are also true ridges, being elevated above the 

 surface of the dorsum. All three patches in this species end not in a 

 single aperture or pore opening dorsally, but in five stout brown 

 horizontal pores, which secrete a small quantity of fluffy brown wax. 

 The dorsum in this species is covered with a large number of ex- 

 tremely minute circular pores; the margin is also broad and clearly 

 defined. 



Mr. Maskell was mistaken in assmning that the three radial patches 

 were sufficient evidence to prove the close relationship of A. eugeniae 

 and A. eugeniae, var. aurantii. As a matter of fact, many of the 

 Indian Aleurodidae possess this characteristic, however widely differ- 

 ent they may otherwise be. (Peal.) 



