Insect,'^, etc.. Injurious to the Plum. 



393 



previously. The grower wrote later that he had \vati'li('(l fDr them, 

 ami cleaned the trees with sol't soap and quassia. They all fell to 

 the ground, aud he thought they had l.ieen made an end ol', Ijut on 

 the t'olh.iwing day they hail re\'ived, ami A\ei'e all up the trees again. 



The ettect of these Yellow Leat llnjipers nu pluiu and apple is 

 very similar to that of the Ti/ii/i/i'i-i/hu, liut iu nuts they produced a 

 curious split and jagged appearance of the lea\'es (Fig. iJiiii), 



hi life-history they diller from the itretty Ti/jihloi'i/lni. Like the 

 latter, hiiwever, they hilierna.te as adults and nymphs, and in very 

 much the same positions; in fact, they are freipiently hmnd in com- 

 pany during the winter. 



The earliest time they have l.teeii noticed on nuts is the -!nd nf ^lay, 



hut douhtless thev are about hel'ore then. Eggs are laid in dune, and 

 another brood appears in August. Some eggs Avere lirought me 

 as late as tire 23rd of (Jctober, and I saw one or two still uidiatched 

 on the 17th of Novemlier. A single individual \vas seen active early 

 in December, the weather having been particularly open. I fielieve 

 these C'h/orita: have three, not two, broods. The eggs are laid liy the 

 female on the undersides of the leaves, not under the epidermis, as 

 in the former genus. The egg is wdiite, liroadly spindle-shapeil, with 

 prominent ribs running from pi)le to pole. Length 8 mm. 



The ova hatch in August in alx.mt eleven days, and the nymphs 

 at once commence to feed (IX). 



The nymphs have been nbserved to moult live times, and reach 

 maturity in about five weeks, a few in thirty days (1«). "\\dien first 

 hatched they are ver,)' pi»lc, almost white, Imt darken as they grow, 



