ZOOLOGY. 241 
Insurrous Insects.—In the last report (1872) on the “ Injurious 
Insects of Mass.,” made to the Board of Agriculture, some facts are 
brought out that may interest entomologists as well as farmers. 
Onion Thrips. 
A grievous pest to the onion crops of Essex county is the Limo- 
thrips tritici of Fitch, who found it on the blossoms of wheat and 
Fig. 42. 
Parasite of Cabbage Caterpillar. 
clover. The insect * occurred in all its stages (Fig. 41, male, and 
end of antenna of male; a, female; b, larva) on the leaves of 
e are indebted to the kindness of Hon. C. L. Flint, Secretary of the Board of 
; il for the loan of t 
AMER. NATURALIST, VOL. vit. “16 
