136 
THE SUBSTITUTE. 
Edivardsii of Stephens, and was 
the first that pointed it out as a 
new genus. I find tluit I have 
now to find out nearly a hundred 
new species that are quite su’aug- 
ers to me. If there is any thing 
to be found in this neighbourhood 
that you can point out, either in 
the 'Coleoptera or Lepidoptera, I 
shall he obliged. — In. 
Structure and Habit . — I ven- 
ture to differ with the author of 
the leading article in the ‘ Substi- 
tute’ of December 20th. I hardly 
think that the expression of M. 
Guenee will strictly bear the in- 
terpretation there put upon it. The 
words in the original text are, 
“ Les chenilles de la seconde 
serie, ou Nonagrides, ont des 
incurs particulieres qui entrainent 
des modifications dans leur organi- 
sation.” — Vol. V. p. 65. 'I'he word 
entrainent., if translated literally, 
would signify “ drag with them,” 
or “bring with them” modifica- 
tions in their organization, — cer- 
tainly not “ necessitate.” The clear 
meaning, however, of the passage, 
which cannot perhaps be translated 
literally into English, is that “ the 
peculiar habits of the Nonagrida; 
require mollification in their or- 
ganization.” Even the translation, 
as you have given it, will not bear 
the construction you intimate in 
the subsequent remarks : to bear 
out this supposed meaning of M. 
Guenee, the word “necessitate” 
ought to be “cause” or “pro- 
duce,” for it is quite clear that 
if the manners or habits of the 
caterpillars necessitate modifica- 
tions in their organization, the 
design of the organs was simul- 
taneous with the manners or 
habits; in other words, the pas- 
sage may be fairly read, “The 
habits of the larvae of the Nona- 
grida, differing from those of the 
rest of the family Leucanida, re- 
quire that they should be provided 
with an organization modified to 
suit their different mode of living.” 
— C. R. Bree, Stricklands, S tow- 
market ; December 24, lSo6. 
[We had not the original, but 
only the translation (by another 
hand), before us when we wrote 
the article in question. We are 
glad there was a lapsus calami, 
and thankful it has been pointed 
out. Independently of the quota- 
tion, however, we think our views 
are sound, and the article may do 
good in inducing some persons to 
think about the subject who never 
thought about it before.] 
Aporia Cratcegi . — Through the 
liberality of my friends I possess 
a sufficient number of Aporia 
Cratagi, having taken only one 
myself. One fine July morning 
1 tried Mr. Stainton’s recipe, an 
early walk, and reached Knock 
Wood not long after the suit had 
risen (he is no sluggard at that 
time of year). While preparing 
my net for work a beautiful Cra- 
toegi floated gracefully down from 
its airy height, and alighted ou 
the bloom of a tall thistle, not two 
yards from where I was standing ; 
the beauty was speedily transferred 
to my collecting-box. I have never 
taken another, nor has one been 
seen, to my knowledge, in this 
immediate neighbourhood. The 
species appears to be very local, 
as my friends inform me that it is 
abundant in some parts of Kent, 
not far from Tenterden. What is 
the cause of this fastidiousness, as 
it seems to us ? the food-plants 
of its larva are surely common 
enough. How little we know about 
