424 REVIEWS. 
farmers made better acquainted with the habits of insects and the 
best means of combating them. z 
Fig. 83. Then follows an account of the Euro- 
pean saw-fly (Nematus ventricosus, fig. 
88, larva, a, enlarged; 89, a, male; b, 
female) doing so much damage in the 
state. It is stated that June 29th the 
worms of the second brood were spinning 
their cocoons. It might be added that 
in the first and second weeks of August 
the worms were still on the bushes in 
Salem, and the females of the second ` — 
brood were laying eggs for a third brood 
of worms. ‘This destructive saw-fly is 
now pretty well distributed over New 
England. At Fig. 84. 
destructive, and 
ad been so the 
bes tee hence year previous, 
juniperaria, Another very 
destructive insect, the Rape caterpillar, 
Pieris rape, (Fig. 86, male ; 87, female ; 
Fig. 85 85 a, larva, b, chrysalis) 
which annually does two Cedar Bucculatrix. — 
hundred and fifty thousand dollars worth of dam. 
age to the cabbage crop about Quebec alone, 15 is | 
now abundantly distributed over New England, 
and southward as far as New Jersey. : 
the last two years it has been common at Orono, 
Maine. 
A new insect is described as infesting the 
limbs of the apple tree. It is the Leiopus 
of Say (fig. 91). ‘The larva can scarcely be aie 
tinguished from that of a species infesting the 
ckly ash, the L. wanthoryli Shimer re * 
90 a, larva, b upper, and ¢ under side of the head.) A some mewhat 
similar borer which injures the grape vine is noticed. This is 
