SI THIRD ANNUAL REPORT OF 



Such, in brief, is the history of this common beetle, as far as I have 

 been able to trace it. It doubtless has natural enemies, and ants are 

 so fond of the helpless pupre that the (Jolaspis never occurs on the 

 roots where they abound. The evil effects of its work are more ap- 

 parent on young and newly set plants than on older ones, and the 

 only way to prevent the ravages of the worm, which we yet know of, 

 is to so protect newly set plants that the beetles will not get access 

 to them. I have had no opportunity to make experiments, but it may 

 turn out that some application to the ground or to the plant, such as 

 ashes, soot, lime, or salt, will ward off the perfect beetle, and I shall 

 be glad to hear reports from those who are troubled with the pest. 

 The same remedies used in killing the Colorado Potato-beetle would 

 also kill this species. 



CoLAsns flavida, Say- — Larva, (Fig. 3S) — Color dingy yellowish; uniformly covered with 

 sparse stiff yellowish hairs. Having the general appearance of a Laraellicorn larva. Slightly 

 arched but capable of stretching out tolerably straight. Narrowest in middle of body, the tho- 

 racic and anal joints being slightly swollen. The joints with about three dorsal wrinkles to each. 

 Head honey-yellow, rounded, flattened in front ; epistoma and labrum of same color ; jaws darker. 

 Legs pale, setous, and terminating in a brown claw. Spiracles scarcely perceptible, the first 

 sub-ventral between joints 1 and 2, the others placed on a lateral series of swellings commencing 

 with joint 4. Joints 4-11 inclusive, each with a pair of soft ventral leg-like appendages, ending 

 in two or more stiff hairs. Anal joint somewhat horny below (Fig. 38, b) but with no trace of 

 prolegs. Length 0.25—0.30 inch. Described from two rather poor alcoholic specimens. 



THE GRAPE-LEAF GALL-LOUSE— Phylloxera vitifolice* Fitch. 



(Homoptera, Aphida;.) 



Here we have an insect, the life-history of which is as interesting 

 to the entomologist as its devastations are alarming to the grape- 

 L Fi s- 39 d grower. I have given it consid- 



;|# erable attention the past summer, 



and though it is a difficult task 

 to present definite and satisfac- 

 tory information from the multi- 

 tude of facts obtained, yet I shall 

 -, i J endeavor to give a comprehen- 



e account of this little louse, 

 far as my present knowledge 

 of it will permit. In doing so I 

 am made painfully aware that 

 . •' there is much room left for fur- 

 "<: " ; ther observations, and he who 



will patiently and persistently 

 devote his time for a few years to 

 its study, and will with candor and accuracy give to the world the re- 



