Injurious and Beneficial Insects. 19 



which are succeeded on each of the other rings by a pair of 

 short, impressed oblique lines. 



It is nearly half an inch (.45) in length. 



It may be readily recognized by the four chitinous patches on 

 the prothoras, and by the very minute clypeus and labrum. 

 The upper side of the prothorax is inclined downward towards 

 the head, but not so much as in Clytus. 



The pupa is white, with the wing-covers reaching to the end 

 of the second abdominal segment. The antennae are not much 

 curved, reaching to the end of the third abdominal segment, and 

 resting above the legs. The prothorax is swollen just behind 

 the middle, and is just as long as broad. The maxillary palpi 

 are long, reaching nearly to the end of the coxae. The labial 

 palpi reach a little beyond the middle of the maxillary palpi. 

 The two anterior pairs of legs are folded at right angles to the 

 body, the third pair oljliquely. The first pair of tarsi reach to 

 the base of the second tarsi ; the second pair of tarsi reach to 

 the coxae of the third pair of legs. It is a third of an inch 

 (.33) in length. 



The beetle itself has a reddish body, with Prussian-blue wing- 

 covers. The prothorax is just as long as broad, with the sides 

 moderately convex, and broadest just behind the middle. The 

 antennfe and tibiae are blackish brown, the tarsi being dull red, 

 the hind pair being darker than the others, and the femora are 

 reddish. The prothorax is distinctly punctured, while the 

 elytra are very coarsely punctured. The scutellum is pale red- 

 dish. It is a quarter of an inch in length. The description of 

 the beetle is taken from a single specimen received from Illinois. 



INSECTS INJURIOUS TO FIELD CROPS. 



The European Cabbage Butterflif. — We have two native kinds 

 of white cabbage butterflies which have never done much harm 

 to our cabbage and turnip crops. The first of these is the com- 

 mon white Northern cabbage butterfly, Pieris oleracea of Harris. 

 Its habits are thus briefly described in the " Guide to the Study 

 of Insects." " We have found the larvae of this species on turnip 

 leaves in the middle of August, at Chamberlain Farm in North- 

 ern Maine. They are of a dull green, and covered with dense 

 hairs. When about to transform they suspend themselves by 



