19 



ins-froni the numbers infestinp; the bushes, tliey aj)peared to prefer the black currant to 

 either the red or the gooseberry. By the l">th of the month they were well f;rown. and ap- 

 Pj^ ,„ peared as shown in fig. 12, (after Kiley). They are 



then nearly an inch and a quarter long, of a whitish 

 colour with a number of black spots on each ring or 

 segment ; a wide yellow stripe down the back, and 

 another of the same chart'cter along each side, the 

 latter somewhat broken. The underside is white 

 with a slight tinge of pink, also spotted with black, 

 and with a wide yellow stripe down the middle. 



'I'he length of the chrysalis see fig. T , is 

 ibouthalf an inch; it is of a dark reddish brown 

 colour, paler between the segments, appearing under 

 a uiagnilyins glass roughened with minute punc- 

 tures and irregularities of surface ; the abdominal 

 segments are dotted with round punctures of vary- 

 ing sizes, while the terminal one is armed with two 

 ■ihort .'■harp brown spines. By the 2nd or 3rd of 

 July, frc-sh specimens of the moth fig. 13, were on 

 the wing becoming much more abundant about the 

 i;th, when they were observed flying in almost 

 every direction about tiie bushes. '1 he moth when 

 its wings are expanded measures an inch or more 

 acro.«s ; the wings are of a pale yellowish colour 

 with several dusky spots, varying in s ze and foim, 

 and more distinct in some specimens than in others ; sometimes these 

 spots are so arranged as to form one or two irregular bands across 

 the wing.s. About the middle of July, some of these active speci- 

 mens were captured, and one of the females, confined in a box by it- 

 self, laid a large number of eags, HO in all, between the 22iid and 

 23rd of >July. These were laid loose in the box excepting 24 of 

 them which were slightly attached to the sides. The egg when 

 _^ viewed through a micrnscope is a very beautiful object ; its length 



IS nearly i Jijtlis of an inch, width nearly y^oths ; in form it is an elongated oval, rather 

 blunt at each end. Colour dull yellowish grey, sometimes with a bluish tinge with the sur- 

 face honevcombcd with regular depressions, the riilges bordering each cell having several 

 bright minute whiti.^h dots, which irive the egg a very pretty and brilliant ap]iearancc when 

 brouizht under the .strong light of the condenser of the microscope. At the present date, 

 December 1st, these eggs are still unchanircd, excepting slightly in colour, owing to the 

 developing larvae showing through the semi-transparent shell in spots, the larvae in all prob- 

 ability will not emerge until e.irly spring. As there is oidy one brood of this insect with us 

 duiini.; the year, it is never likely to jirove very troublsome ; a seasonable application of helle- 

 bore will in any ca.se keep it within bounds. 



The White-marked Tussock Caterpillar, On/ijia leucostigma. 

 The oriyia caterpillar is always common in our section of Ontario. The clusters of eggs 

 from which the larviv are produced are cjuite numerous in winter en our fruit trees especi- 

 ally those of the apple, pear and plum, they are securely fastened to the tree along with a 

 dead leaf or two by threads of silk. 



Fig 14, (after Riley), represents the full- 

 ^Town cateriiilhir which, when about to change 

 to a chrysalis.sclects a leaf on which to undergo 

 this important transformation, and tliis leaf in 

 such a position that while the chrysalis is 

 firmly attached to it on the one side, if is 

 firmly secured by silken threads to the under 

 side of a br.mch on the other, thus securing 

 the leaf from falling to the ground iu the Au- 



ng, u. 



