DESCRIPTIONS OF LARVAE 



MEMORANDA OF THEIR METAMORPHOSES, 



HABITS, ETC. 



Galeruca sp. 



Larva of nearly full size of G. viltata ? or gelatinarice ? Fabr., or of an 

 allied species, found abundantly on Ambrosia elatior, 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 white color, blotched at the sides around the 

 upper row of lateral tubercles, and ia 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 

 tapers at each end. On each segment there are two 



Trio" ' 



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 

 are whitish, and come out double, being apparently united and slightly 

 enlai-ged at the tip, so as to form a loop conspicuous at this part. Length 

 one fourth inch. 



* 



Haltica alni Harr. 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 serrulatd) 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 dispersed, and several 



