ENTOMOLOGY. .575 



notus klemalis and J/e/'i-sus de,strt/.ei(//' are reported as parasites of the 

 Hessian fly. The destructive pea aphis caused serious losses to sweet 

 peas and lield peas at Ottawa and other points. Experiments were 

 conducted in spraying plants Avith the tobacco and soap mixture com- 

 posed of 10 lbs. of tobacco leaves and 2 lbs. of whale-oil soap to the 

 barrel of water. Most of the plant lice were destroyed. Brief notes 

 are given on Crlocerls aspuragl and C. 12-ptinctata. As remedies 

 against these insects the author recommends dusting plants in summer 

 with lime, spraying with arsenites, beating the plants, and the use of 

 trap plants. 



The black violet aphis was ver}^ destructive to violets under glass at 

 Toronto. Fumigation with tobacco is not to be recommended, since 

 violets are usually injured by this substance. The use of hydrocyanic- 

 acid gas for greenhouse fumigation is preferred. Descriptive biolog- 

 ical and economic notes are also given on Bryolna pratensiH^ Phlydum'ta 

 fervKgal !s^ and Lyda ninltisignata. 



The report on the apiary at the Central Experimental Farm is made 

 by J. Fixter. Eighteen colonies of bees were removed from winter 

 quarters on April 1, and were placed in the house apiary, ♦> in the 

 sheltered apiary, and 6 in the exposed apiar3\ It was noted that 

 while the weather was cool with cold winds, ])ees which were sheltered 

 were flying, while those which were exposed did not leave the hive. 

 Brief practical suggestions are given on the management of ])('(>s in 

 summer. 



Some insects of the year 1899, E. H. Petit {Michigan Sta. Bui. 

 180, j)j). lJ7-14-l,Jig-'i. lo). — The red spider is reported as injurious to 

 plum, apple, peach, chestnut, and honey-locust trees. The greatest 

 amount of damage was done to apple, plum, and peach trees. The red 

 spider was observed usually on the underside of the leaves, but on 

 both sides of chestnut leaves. Various distortions were produced in 

 the leaves b}- the attack of these mites. 



The European fruit scale {Asjndiutus ostreceformis) is reported as 

 injurious to soft maple, currant, mountain ash, and apple trees. The 

 natural enemies of this insect observed in Michigan are Smilia misella 

 and Chilocorus hivulnerita. A detailed description is given of this 

 species of scale louse. 



Economic and biological notes are presented on the following species: 

 Ti.'icheria vialifoliella., Loxostege sticticalis^ Si/stena tceniata hlandu., 

 Disonycha triangularis, Epicauta cinerea^ Diahrotica viUata, Typo- 

 'pharus canellus., Euphoria inda,, and Sda7idr!a nihi. 



Brief suggestions are given regarding formulas and the use of the 

 more common insecticides. 



A recent observation on Filaria nocturna in Culex, G. C. Low 

 (British Med. Jour., 1900, A^a W59, pp. lI^oG, 1J/j7, pi. ./).— The 

 author studied the life history of this Filaria in Cultx ciliaris. In 

 13411— No. 6 



