96 



through this orifice. A very great number ot the wax-covered skins of this stage 

 occur on the rose twigs and leaves sent us. 



''^^ |./V^-- T ^ 



t. '^ 



J 



Fig. 10. 



h 



-Icerya roses : g, larva, third stage, witli waxy cover iDg; h, same, cast skin ; i, iidult, imniedi- 

 atelv after molt— greatly enlarged (original). 



Adui.t FKMAI.K— Fourth Stage{F\gs. lOi, and 11).— Similar in size to adults of I. pur- 

 chasi, broadly oval in shape and densely covered with a short powdery secretion 



which forms a series of short 

 close plaits around the mar- 

 gin. The waxy secretion has 

 often a yellowish tinge. No 

 distinctive egg-sac was to be 

 found with any of the speci- 

 mens received, and it is prob- 

 able that such is not formed. 

 Removing tbe secretion, the 

 head and thorax are black, 

 margined with red, while 

 the dorsum of the abdomen 

 and entire under side of the 

 body are bright red ; auteu- 

 nae, legs, and eyes black. 

 Surface of the body covered 

 with short hairs, lateral mar- 

 gin with longer hairs, still 

 longer near anal end. Di- 

 visions of segments plainly 

 marked, especially of abdo- 

 men, which has a broad 

 rounded subdorsal ridge. On 

 first issuing from the third 

 stage the adult is only 

 moderately convex, but ad- 

 vanced specimens are much 

 swollen and appear more 

 naked. The antennae are 

 like those of I. purchasi. 



Fig. IX.— Icerya rosce : j, pregnant?, side view ; k, same, ventral 

 Yjew— enlarged ; I, tarsus of same; m, antenna of same — still 

 more enlarged (original). 



