/\i-/><>r/s (o flic BoarJ of A i^ricultiirc. 23 



nttaikfd l>y scale, were in some insUnces perfectly heallliy ; in others, 

 scale insects ((.\)ccida') weix' caiisinj» disease. 



The attention of ^rowei-s is dniwii to the inuniul ;ii>iK';ir.in( e uf 

 liark and rind of the ditlerenl fruit tifes, as it is not an unconinioii 

 thing to have questions luskeil re}.,'anling the sjnjts pix'sent on the 

 twigs of various fruit trees nntl hushes, which lu-e often, as in the 

 present case, mistaken for scale insects. 



Tlif folK)wing specimens sent may l>o taken as examples of 

 this: — 



A. (Apple; an exceptionally had case of Quiirrenden apple — 

 fourth ye;u-.) 



This s|)ecimen was covered with the Apple-l»;nk Louse or Mussel 

 Scjde (Mi/tild.'ipu'i j>o)iii>n(7n) (Fig. 3, a). 



1>. (Tear, pivsumed to l>e scale of a ditYerent variety, somewhat 

 like l>ark I (listers.) 



This twig wa.s (piite clean ; the small grey spots (Fig. 3, b) are 

 normal hark spots, hut might easily he mistaken for the San Jose 

 Sctile (Aspo/iotiis j^rniciafu^), or the Japanese Fruit Scale {Diaspis 

 ami/tjdali). 



C (Gtjoseheny with scale. This scale in most ca.ses has not 

 l»een noticed to leave a j)rotruded v^ii, trail. Dot's it ? See E.) 



This sj)ecimen contained two specimens of the I'rown CuiT.int 

 Scale {Ltcaniuin ribvi) ; no white protruding egg ma.ss, i.e., no white 

 cottony nest is forme<l .so as to protrude from the .scale in this siHJcies, 

 ns in the White Woolly Currant Scale (Pulvinaria riltesii). The 

 young scales of this si>ecies are much flatter than the old and paler 

 in colour. 



1). (Currant with remnants of " egg trail.") 



Although no .scale is attached to the twig of cumuil .sent ii 

 contained a large cottony mass of eggs and wool. This re.semhles the 

 cottony cushion seen in J'l'lvinaria riftrsii (vide l). 



Tliis .scale can ea.sily l>e told faun L. ribis hy U'ing rai.sed up olV 

 the rind hy a yxid of white wool. 



E. (tn>o.sel»eny with remnant of egg trail, etc.) 



Tliis spmy of g«x>sel»erry had two mature .scales of Lecaniuvx riliU 

 and .several smaller ones; also a nujss of white wtMil with n(» .scale 

 attache<l. Tlie .scales are the .sjime as C. I'ossihly the white wool is 

 due to the .same sjHJcies as I). 



F. (Aj)ple Branch, grey sjx.ts on hark.) 



Tlie grey l«iniacle-like sjM.t-; r't'""-! t'> wv n-i scales or any 

 insect, hut Imrk spots. 



G. (Quince, red sjmts on Iwirk.) 



