164 P aviator ia. 



PARLATORIA MYTILASPIFORMIS, sp. nov. 

 (Plate LVIII.) 



Female puparium {fig. 2) brownish fulvous, semi-transparent, paler at 

 margin ; often irregularly veined. Pellicles clear yellow ; anterior margins 

 thickened ; situate at anterior extremity. In fully developed examples the two 

 pellicles together occupy less than half the total length of the scale. Form 

 elongate, somewhat resembling that of Mytilaspis or Chio?taspis, occasionally 

 ovoid. Ventral scale attached a little within the margin of the dorsal scale, and 

 appearing as a ragged whitish sub-marginal zone on the upturned puparium 

 {fig. 3). Length i"5o to 2 mm. Breadth 0*50 to i mm. 



Male puparium {fig. 4) of normal form, elongate, median area depressed. 

 Colour pale fulvous to whitish. Pellicle yellow, with greenish centre. Length 

 I mm. 



Adult female {fig. 5) narrowed in front, broadest across abdominal segments. 

 Median area tumescent, purplish ; margin whitish. Cephalic extremity depressed 

 above, the margin standing up as a thickened border. Pygidium very pale 

 ochreous, tinged with reddish on the thickened median area. Spiracles without 

 parastigmatic glands ; the anterior pair situate very high up, one on each side 

 of rostrum. Lateral margins of abdominal segments with irregularly fimbriate 

 processes. Pygidium {fig. 6) with typical marginal fringe. Lobes elongate and 

 prominent, obscurely trifoliate, projecting beyond the squames. Squames 

 elongate, narrow, fimbriate at extremity ; those between lobes narrow, the others 

 much broader. The two small pointed marginal processes — the rudimentary 

 fourth and fifth lateral lobes— are usually present, but their position is slightly 

 variable ; one or both are sometimes obsolete. The usual semi-lunar marginal 

 pores are large and conspicuous, especially those towards the extremity of the 

 pygidium. Dorsal surface with numerous small oval pores. Circumgenital 

 glands in four groups : number of orifices unusually constant, there being— in 

 every example examined — 6 in the upper laterals, and 5 in the lower lateral 

 groups. Anal considerably below genital aperture. Length 075 to i mm. 

 Breadth about o"5o mm. 



Adult male not known. Male pupa purplish. 



Eggs pale purple, numerous, arranged in two rows beneath the scale {fig. 3). 



Habitat on leaves of Psychotria Thwaitesii j Pundaluoya. The female 

 scales are situate on the upper, the males on the lower surface of the leaves. 

 (Since found on tea plants, in the Udagama district.) 



This species approaches very closely to Parlatoria proteus, Curtis. It may 

 be distinguished by the elongate form of the female puparium, and by the more 

 prominent and elongate lobes of the pygidium. In proteus the pellicle of th? 

 male puparium is said to be black. 



