196 



R. NEWSTEAD — SCALE INSECTS (COCCID^e) 



of the rest of the body, with two broad bands of Inrge dorsal pores corre- 

 sponding to those on the free abdominal segments ; anal orifice opposite the 

 distal ends of the dorsal pores ; between the former and the margin are five 

 linear and two oval thickenings of the body-wall. Circumgenital glands 

 absent. Margin of pygidium (fig. 8 a) with three pairs of lobes ; median 

 pair smallest and widely separated, edge faintly dentate near the centre ; 

 second pair bilobed, the inner lobule much the largest, with a strong tooth- 

 like projection on the inner lateral margin, outer lobule somewhat angular 

 ill shape and irregularly and faintly dentate ; third pair of lobes trilobed, 

 the median lobule the largest, lateral lobules distinctly dentate. Squamse 

 long, stout, and simple ; there is one betw^een the median and second pair of 

 lobes, and a pair (one dorsal, the other ventral) immediatel}^ anterior to the 



Fig. 8. — Chionaspis dentilobis, Newst. 



a. Margin of pygidium of adult female. ' 



b. Margin of pygidium of second-stage female. 



second pair of lobes. Spines minute. Rudimentary antennse with 3-4 strong 

 spines^ one of which is much stouter than the' others. 



Length 2-2*25 mm. 



On the slender branches of an unknown shrub ; Botanical Gardens, 

 Entebbe, Uganda Protectorate, 18.xi.lO (C. C. Gowdey, no. 1270). 



The females may be readily distinguished by the curious form of the 

 pygidial lobes. Owing to the non-chitinised character, great difficulty has 

 been experienced in getting satisfactory preparations for microscopical 

 examination. With the younger forms this character is not present. The 

 pygidial fringe of this stage is shown in the accompanying figure and may 

 assist in the future identification of this insect (fig. 8 h). 



