72 Aonidia. 



AON ID I A BULLATA, sp. nov. 

 (Plate XVIII.) 



Female puparium {figs. 4, 5, and 6) consisting apparently of the second 

 pellicle only, without any supplementary secretional matter. An empty detached 

 scale, seen from below, has exactly the form of a ladle with a short, broad, 

 handle. Anterior portion widest, broadly rounded, very convex, hemispherical, 

 with marginal area slightly flatter ; posterior half abruptly narrowed and flat- 

 tened ; the terminal portion curiously and symmetrically sculptured {fig. 4). 

 Colour very dark brown — almost black, a large diffused reddish-brown space 

 towards the posterior extremity. Ventral scale very thin and delicate, ruptured 

 on removal of puparium ; persisting only as a narrow sub-marginal zone of 

 whitish secretion {fig. 5). No trace of the first pellicle can be distinguished, 

 even after prolonged maceration ; the paler coloured space near the posterior 

 extremity being slightly depressed and more or less definitely circumscribed, 

 may be mistaken for the missing pellicle, but, upon closer examination, this 

 resemblance is seen to be delusive. It is probable that the lar\'al skin is 

 dislodged during the excessive development of the anterior part of the scale. 

 Posterior margin minutely and regularly indented ( fig. 9). Length 075 mm. 

 Greatest breadth 0*50 mm. 



Male puparium {fig. i) irregularly circular, thin and delicate, silvery white; 

 pellicle placed towards anterior margin, rather large, purplish black, bearing 

 on its centre a conspicuous ball of closely felted white cottony secretion. A 

 tangled mass of delicate white curling filaments proceeds from the posterior 

 part of the pellicle and falls on to the scale behind {fig. i). These appendages 

 are easily dislodged, and are consequently absent in many specimens, leaving 

 the black pellicle completely exposed. Under surface with a shallow groove 

 for reception of the insect, bounded by the remnants of the delicate ventral 

 scale {fig. 2). Diameter about i mm. 



Adult female occupying the anterior part of the cavity of the puparium 

 {fig- 5) ; abdominal segments shrunken and withdrawn into the thoracic region ; 

 dorsum very convex and rounded to fit the hollow of the puparium ; colour 

 reddish purple, abdominal segments yellowish white. I have not been able 

 to examine the living female before gestation, but macerated specimens show 

 an elongated and narrowed abdominal region {fig. 7) in correspondence with 

 the form of the puparium. Rostral apparatus comparatively large, very near 

 the anterior extremity. A pair of minute antennal papilla; on the anterior 

 margin. The pygidial area is not well defined ; there are no grouped glands ; 

 the extremity is squarely truncate, bearing eight very small rounded lobes, with 

 two or three minute marginal points in each space {fig. 8) ; there is a slightly 

 thickened short cylindrical tube leading inwards and upwards from the anal 

 aperture. Length of distended specimen o"6o mm. Breadth 0*45 mm. 



