300 Forty-second Report on the State Museum. [158] 



The scale insect is Chionaspis furfurus (Fitch). The washes named 

 should have destroyed it ; in all probability they aided largely. Lye, 

 soda, and potash washes are valued as very effective against the scale 

 insects of California. Formulas for two of the washes are given. 

 "Heavy oil" from W. Virginia recommended for scales. Some of the 

 lady-bugs are very efficient in destroying them, as Chilocorus bivulnerus, 

 C. cacti, and species of Scymnus. Entomological knowledge would be 

 needed for their collection in sufficient quantities for the purpose. 



[Injurious Fruit Insects of the Vicinity of New York.] (Proceedings 

 of the New York Farmers: 1886-87, pp. 52-59.) Published March, 

 1888. 



Following some remarks on the aid that may be given to agriculture 

 by economic entomology, its consequent importance, its commencement 

 within recent times, its progress, and the high position it has attained ; 

 also, on the great increase of fruit insects and the causes therefor — 

 the following insects are noticed and best remedies for them 

 given : The apple-maggot (Trypeta pomonella) ; the apple-worm of the 

 codling-moth ; apple-tree aphis ; bark-borers {Xyleborus pyri, and Sco- 

 lytus rugulosiis and S. obesus) ; plum-curculio ; peach-tree borer ; eight- 

 spotted Alypia on' grapevines ; currant-worm ; cabbage-butterfly {Pieris 

 rapce) ; and the Colorado potato-beetle. 



Sulphur for the Elm Beetle. (Country Gentleman, for March 15, 1888, 

 liii, p. 209, c. 2-3—30 cm.) 



A notice in the New York Sun (copied) states that Mr. Dodd, of Orange, 

 N. J., claims to have demonstrated that the attack of the elm-leaf beetle 

 on elm trees can be thwarted by placing sulphur in one-inch augur holes 

 bored in the sap wood five inches apart around the tree. Comment on 

 this is made that the inefficacy of this method of protecting foliage, first 

 announced sixty-six years ago, has often been shown. Sulphur could 

 only be taken in the circulation when dissolved, and it is not soluble in 

 sap. It has been found, unaltered, in plugged cavities of trees five years 

 after insertion. It is doubtful if sulphur, if dissolved, would prove inju- 

 rious to insects. Some experiments made by Dr. Fitch (given) indicate 

 that it promotes their vigor and growth. [See page 240 of this Keport.] 



The Pea Weevil. (Country Gentleman, for March 22, 1888, liii, p. 229, 

 c. 1-3 — 68 cm.) 



The operations of the grub in the pea are described. It is a true weevil, 

 belonging to the Chrysomelidce. Description of the beetle is given, and 

 its distribution in the United States and Europe stated. It has been 

 very abundant in Canada. The eggs of the beetle are deposited on the 

 pod, through which the larva burrows to reach the peas. Green peas 

 containing the young larvae may be safely eaten. Eemedies and pre- 

 ventives are these : Keep the peas in a warm place, when the beetles will 

 prematurely emerge in autumn, and die before they can oviposit the fol- 

 lowing season. They may be killed by dropping the peas in hot water for 

 a minute, or by exposing them to camphor or kerosene, or by bisulphide 



