THE CANADIAN ENTOMOLOGIST 219 



plants and infested Althea blossoms and Ampelopsis foliage further 

 away. Alfalfa, corn, tomatoes, pears in adjoining fields and cow- 

 peas and pole beans in the nursery were uninfested, although the 

 beans were close to the infested weeds. Smartweed in the midst 

 of the cowpeas and tomatoes was badly eaten. The insects were 

 found occasionally resting on other plants such as Tamarix africana 

 in the nursery and corn silk in the field, but no feeding could be 

 detected. 



When disturbed during the neat of the day, the beetles would 

 partly fall and fiy ofif in a clumsy manner with a slight buzzing 

 sound. On the whole they were quite active. Late in the day 

 they were less active and would fall to the ground when disturbed. 

 A number were noted in the attitude of copulation, but very few 

 were found in copulo. 



Mr. C. H. Uchida was kind enough to translate accounts of 

 this insect as given in two Japanese text books. The first one is 

 that given by S. Matsumura in his "Japanese Insect Pests," part 

 2, p. 247. He states that the beetles do considerable damage to 

 string beans, grapes and certain wild beans; that the adults emerge 

 in June and remain until September; that they are attracted by 

 lights and controlled by hand picking and spring and fall plow- 

 ing. The other account is that given by A. Fukatani in "Practical 

 Methods of Destroying Insects on Horticultural Plants," p. 325. 

 Mr. Fukatani gives the following account: The species feeds on 

 string beans, peas, grapes and peanuts, the larvae being found in 

 the soil on the roots. The eggs are milky white, elliptical and about 

 one-sixteenth of an inch in length. The larva is a characteristic 

 white grub about three-fourths of an inch long, milky white, with 

 a yellowish brown head. The pupa is about one-half inch in 

 length, yellowish, covered with short hairs. The larva winters in 

 the soil and pupates in May or June, the beetles emerging in July. 

 Eggs are deposited singly in the soil and the larvae moult several 

 times before winter, the complete life cycle requiring one year. 

 He also states that control is effected by jarring the beetles off 

 the plants into a dish of oil and water; by jarring them from trees 

 to a cloth spread below; by spraying with Paris green, lime and 

 water; Paris green and Bordeaux mixture and by the use of Vaporite 



