18 
INSTRUCTIONS IN LEPIDOPTERA. 
come very freely, and even the Sphingidce (i. e. the genus 
Smerinthus) sometimes make their appearance. To obtain 
moths by light it is advisable to have one light outside the 
room in advance of the window, and one inside the room ; the 
former light bringing the moths within the sphere of attraction 
of the inner light. Those who try this plan will find that all 
nights are not equally successful: sometimes the moth will 
come in perfect sroarms, and all sorts of rare species come 
to the collector, instead of his having to go in search of them; 
at other times, though the weather seems favourable, no 
moths will come, and the collector becomes disheartened 
and declares that light is “ no go.” It is no use to try light 
on a bright moonlight night, but dark and dull nights, with 
not much wind, are generally the best, yet I have known 
moths come freely when a strong vrind has been blowing. 
There are certain flowers that some moths are particular^ 
fond of, and may be readily caught in the evening dusk buz¬ 
zing at them; Silene inflata is a general favourite with mam 
species, and the common red valerian, honeysuckle and tl)f 
lime tree (when in blossom), are also very attractive. 
But besides collecting moths in the perfect state, they mat 
also be collected in the chrysalis or pupa state. Old collector 
in the time of Haworth used to obtain pupae by digging 
them, but latterly this plan had so rarely succeeded, that A 
was generally contemned till the Rev. Joseph Greene sue 
ceeded in reviving the plan, by the success which attended 
his energetic assiduity in this mode of collecting. Mr. Green* 
who is the only authority to be quoted in respect of diggifl? 
for pupae, remarks,* that “ meadows and parks with scatter! 
timber trees are generally the best localities ; next to meado^ 
anil parks come woods, but searching in woods is a tediotf 
and fatiguing affair, and requires some experience : it is 1* 
* 1 rails. Ent. Soc. vol. 2, N. S., Proceedings, pp. 110, 111. 
