13LK Observations on Insects. 



13. A species of Coccinella, or May-bug, still more 

 destructive, than either of the two preceding in- 

 sects, to the cacurbitacecs, not contenting itself with 

 the vines and leaves, but also destroying the fruits, 

 in different stages of their growth. 



14. Melolontha multivora, commonly called " Rose- 

 Bug," on account of its ravages upon the petals, 

 &.c, of the garden rose. But this insect proves 

 extremely destructive to many other vegetables, 

 some of which are of much more consequence to 

 us than the rose : such are the apple, the peach, 

 the cherry, different kinds of mulberry, and many 

 others ; for, perhaps, no insect is more strictly en- 

 titled to the appellation of multhora, or multivorous. 



15. Various species of insects which inhabit and de- 

 vour the leaves, &c, of the Common Tobacco, and 

 other plants of the natural order, called Lurid<c, or 

 Solanaccce. In this section, the author's principal at- 

 tention is turned to the common " Tobacco- worm," 

 as it is generally called. 



16. Different species of Gryllus, or Grasshopper, 

 which, in the southern states, devour the young 

 Indigo (Indigofera tinctoria), and in Pennsylvania, 

 New- Jersey, &x., devour the leaves and stems of 

 the Potatoe, to the great injury of the crops. 



The author of the memoir, presented to the Philo- 

 sophical Society, is anxious to render that memoir as 



