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twigs were quite covered with a thin coating of the fungicide, this 

 may have in some measure acted as a deterrent to the locusts. I would 

 not like to make the assertion that Bordeaux mixture will deter this 

 insect from oviposition. but the fact observed warrants one in suggest- 

 ing that it will be an interesting experiment to make when opportunity 

 again presents itself. Other orchards near us were very badly 

 punctured by the female insects. 



It occurred to me that it would be an interesting matter to collect 

 data on the various plants chosen by the female insects for deposition 

 of their eggs, consequently I had one of my students follow this 

 matter up quite closely, and he collected the following list of plants, 

 all of which showed the characteristic oviposition of this cicada: 



List of Plants Punctured by the Cicada (Cicada septexdecim). 



1. CoxiFERiE — Pine Family. — Red Cedar (Juniperus virginiana). 



2. Corxace.e — Dogwood Family. — Dogwood (Cornus Florida) . 



3. Ccpuliferje — Oak Family. — Alder (Alnus viridis); Beech (Fagus ferruginseus); 



Birch (Betvla spp. ) ; Chestnut ( Castanea americana); Red Oak ( Qua reus rubrum ) ; 

 White Oak (Q. alba). 



4. Ebexace.e — Ebony Family. — Persimmon (Diospyrus virginiana). 



5. Ericace.e — Heath Family. — Blueberry (Vaecinium spp.); Huckleberry (Gay- 



lussacia spp. ) ; Laurel {Rhododendron maximum). 



6. Hamamelidle — Witchhazel Family. — Gum (Liquidambar styraciflua). 



7. Juglaxdace.e — Walnut Family. — Black Walnut (Juglans nigra) ; Hickory (Carya 



alba). 



8. Legumixos.e — Pulse Family. — Locust (Robinia pseudacacia). 



9. Oleace.e — Olive Family. — Ash ( Fraxinus americana); Lilac {Syringa vulgaris). 



10. Plataxace.e — Plane Tree Family. — Sycamore {Platanus occidental-is). 



11. Rosaceje — Rose Family. — Apple (Pyrus malus)', Blackberry (Rubus occidental is); 



Hawthorn (Crataegus spp.); Peach (Prunus persica); Plum (Primus spp.); 

 Quince (Pyrus cydonia); Raspberry, red (Rubus strigosus) ; Raspberry, black 

 (R. occidentalis); Wild Cherry (Prunus serotina). 



12. Salicace.e — Willow Family. — Poplar (Populus spp. ); Willow (Salix spp.). 



13. Sapixdac.e — Soapberry Family. — Maple (Acer rubrum); Sycamore maple (Acer 



pseudo-pkitanus) . 



14. Tiliace.e — Linden Family. — Basswood (Tilia americana); European Linden 



( T. europsea). 



This list shows that li botanical families, comprising 30 genera and 

 33 species of plants, were used hy the female cicadas as a nidus for 

 their eggs at our place. 



In the discussion of this paper Mr. Schwarz stated that he consid- 

 ered the seventeen-year locust to be one of the most interesting insects 

 we had in this country, and desired that the economic entomologists 

 should bear this in mind in their recommendations for the destruction 

 of the insect. He did not consider the injury done by this species of 

 any particular significance. He thought it to be the duty of economic 

 entomologists to carefully map out the extent and number of broods 



