OF THE UGANDA PROTECTORATE. 197 



Chionaspis subs tr lata, sp. n. 



Pupariam of female satiny-white ; transversely striate, the striae equi- 

 distant and well defined ; sides sub-parallel behind the pellicles ; highly 

 convex in the mid region, posterior margin flattened and generally produced. 

 Pellicles yellow ; the posterior margin o£ the 2nd generally nude and some- 

 times tinged with pale orange-yellow. 



Length 1-50-2 mm. 



Female^ adult, — Cephalic region much narrowed ; pygidium broadly 

 rounded ; derm soft and as flexible as that of the rest of the body, line of 

 demarcation between free abdominal segments not clearly defined. Proboscis 

 placed quite close to the anterior margin. Margin of pygidium (fig. 9) 

 with three pairs of very short serrated lobes ; the second pair duplex ; all 

 the lobes are more or less rudimentary, and, owing to the flaccid nature of 

 the body-wall which has a constant tendency to fold or project, the lobes in 

 a large percentage of specimens are rendered either perfectly obsolete 



•iy;^' 



Fig. 9. — Chionaspis substriata, Newst. ; margin of pygidium of adii't female. 



or appear only as minute and faintly serrated projections. Squamge large 

 and spine-like ; there are usually 3-4 on either side of the median lobes. 

 Dorsal glands, with very short subcutaneous tubes, occur all along the margin, 

 and there are a few similar ones indicating the articulations of the 

 segments. Circumgenital glands absent. 



Puparium of male * satiny white, with the median keel distinct on the 

 posterior half only ; pellicle yellow. 



On palms ; Botanic Gardens^ Entebbe, Uganda Protectorate, 29.iii.09 

 (C. C. Gowdey, no. 304). 



The distinguishing features of this well marked species are the serrated 

 lobes and the forward position of the proboscis. In the sculpturing of the 

 female puparium this species very closely resembles Chionaspis striata ; but 

 the female of the latter species has grouped circumgenital glands, the puparium 

 is thinner and more glossy, and the lobes are not serrated. 



* The male puparia are for the most part incomplete, and in this condition very easily 

 pass for those of Mytilaspis. 



