DESCRIPTIONS OF LAVxVM 



MEMORANDA OF THEm METAMOEPHOSES, 



HABITS, ETC. 



Galeruca sp. 



Larvai of nearly full size of G. viUata ? or gelatinarice ? Fabr., or of an 

 allied species, found abundantly on Ambrosia elatlor, July 30, 1845. They 

 live on the upper surface of the leaves and devour the cuticle and paren- 

 chyma above, leaving the lower cuticle untouched. They are sluggish in 

 their motions, and rest extended longitudinally along the ribs of the leaves. 

 They are of a dirty, yellowish Avhite color, blotched at the sides around the 

 upper row of lateral tubercles, and in two rows along the back with 

 pale, bistre black. The head is wax yellow, the last joint of the legs is 

 black, and there is a black spot on the anterior side of 

 the coxae. They have six legs and an anal proleg. The ^, 

 body is somewhat flattened, or broader than thick, and 60-^ 

 tapers at each end. On each se<iment there are two 



Xi" Off 



lateral, papillose tubercles, one above and the other be- 

 low the spiracle, and on the back each segment has two transverse folds 

 beset with minute tubercles. All the tubercles are setiferous. The bristles 

 ai*e wjiitisli, and come out double, being apparently united and slightly 

 enlarged at the tip, so as to form a looj) conspicuous at this part. Length 

 one fourth inch. 



Haltica alni Ilarr. mss. 



In travelling from Centre Harbor, N. H., to Conway, on the second of 

 August, 1854, and from Conway to Upper Bartlett, and subsequently to 

 Jackson, I saw the alders (Alnus serrulata) everywhere ravaged by insects 

 which had destroyed their leaves in the manner of oanker worms. Upon 

 examination the spoilers were found not to be all dispei'sed, and several 



