THE CANADIAN ENTOMOLOGIST 5 



Balms of Gilead than is that species. Attacked trees may have the majority 

 of leaves almost completely veined by the feeding of the adults alone. ' 



Control. 



Natural. — Egg parasites arc numerous, particularly in Z. abnormis. A 

 minute Hymenopterous fly was reared from attacked eggs, which has been 

 determined as a Mymarid. Over 40 per cent, of the eggs of abnormis examined 

 contained various stages of this parasite. 



One specimen of a hymenopterous parasite only was found in large numbers 

 of larva" examined. 



Artificial. — Experiments in spraying infested trees with Lead Arsenate or 

 Paris Green indicated that the latter would prove more successful. It is a 

 more rapid killer, thus reducing oviposition by the females after feeding on it. 



The following spray gave good results; Paris green, 1 oz.; slack lime, 4 oz.; 

 water, 10 gallons. Care must be taken that the spray is directed to the under- 

 side of the leaves, which necessitates the use of an angle nozzle, and the work 

 must be done as soon as the beetles appear in sufficient numbers to indicate 

 that the trees will suffer later in the season. 



It is useless to spray with Paris green when the leaves begin to turn black. 

 The spraying of only a few trees, however well done, in a badly infested area 

 can at best diminish by a small amount the attack on those particular trees. 

 This is due to the flying ability of the beetles. Were the majority of the trees 

 in the district sprayed early in the season most of the beetles would be poisoned 

 while they were feeding on various trees before selecting leaves for oviposition 

 towards the end of June. 



THREE NEW CRANE-FLIES FROM EASTERN CANADA. 



BY DR. W. G. DIETZ, 

 1 Hazleton, Pa. 



Late in the fall of 1917, I received from Dr. A. G. Huntsman, Curator of 

 the Atlantic Biological Station, St. Andrews, N.B., a small collection of crane- 

 flies, taken by him at Eastern Harbour, Cape Breton Island, N.S., and Amherst 

 Island, Magdalen Islands, Que. Aside from the three species here described 

 as new, the following species were represented: — Limnophila inornata O. S., 

 Eastern Harbour, July 1st, 7 o^'s; Limnophila adusta O. S., Eastern Harbour, 

 July 4, 1 9 ; Pachyrina pedunculata Loew, Eastern Harbour, July 1st, 1 cT ; 

 Pachyrina ferruginea Fabr., Amherst Is., July 15; Eastern Harbour, July 20, 

 5 d^'s, 2 9 's; Tipula angulata Loew, Eastern Harbour, July 1st, 1 cf, 2 9 's; 

 Tipnla trivittata Say, Amherst Is., July 15, 1 cf ; Tipula caloptera Loew, Eastern 

 Harbour, July 1st, 1 9 ; Tipula latipennis Loew {ottaivaensis Dietz), Amherst 

 Is.. July 15, 1 cf ; Tipula rohweri Doanc, Amherst Is., July 12, 1 d^ ; Tipula 

 inermis Doane, Amherst Is., July 15, 2 cf ; and Tipula tephrocephala Loew, 

 Eastern Harbour, July 1st, 1 cf , 2 9 's. 



Limnophila magdalena, n. sp.* 



Black with a grayish bloom. Very similar to Limnophila barberi Alex. 



Legs dusky yellow, femora infuscate at apex only. 



*Types of the new species are in the author's collection. 

 January. 1920 



