INTRODUCTION. 



Ill 



Crepidodera ci/anesccns, Duft. Russia. Aconite. 



alpicola, Ulr. Russia. Aconite. 

 5, rufipes, L. Kentucky, U.S.A. ; Europe. Leaves 



of peach trees; peas. 

 ? , aurata, Marsh. England and Continental Europe. 



Willow. 



erythrojnts, Melsh. North America. Peach trees. 

 ,, costatipennis, Jac. Cameroons. Cacao. 



Epitrix subcrinita, Lec. British Columbia. Tomatoes, potatoes. 

 ,, fuscula, Cr. Concord, U.S.A. Potatoes. 

 ,, cucwmeris, Harr. North America. Potatoes, tomatoes. 

 ,, vigrocenea, Harr. South America. Leaves of potatoes. 

 „ parvula, P. U.S.A. (Virginia, North Carolina, Florida, 

 etc.). Tobacco. 



Systcna blanda, Melsh. North America. Melon, potato, 

 carrot, beet, clover, etc. 



„ tceniata, Say. Virginia. Vegetables generally, par- 

 ticularly maize. 



,, marginalis, 111. North America. Porest and shade 

 trees. 



frontalis, F. Toronto, Canada. Potato, beans, young 

 grapes, asters, chrysanthemums. 



„ hudsonias, Porst. North America. Sugar-beet, po- 

 tato, maize, beans. 

 Haltica engstroni, Sahlberg. N. Eussia, Finland, Sweden. 

 Leaves of Spircea uhnaria. 



,, ampelophaga, Guer. Prance, Spain. Grape-vine. 



„ emcee, |_?F.]. Holland, Eussia. Oak, climbing roses, 

 strawberries. 



,, eupliorbice, P. European Eussia. Flax.* 



,, oleracea. L. European Eussia, England. Cabbages, 

 vines, rape.* 



,, bimarginata, Say. Maine, U.S.A. ; Canada. Alder. 

 ,, foliace^, Lec. Arizona, U.S.A. Foliage of apple and 

 grape. 



,, chalybea^ 111. Ontario, Canada. Grape-vine. 



,, ignita, 111. Canada. Strawberry. 



„ probata, Fall. British Columbia to California. Wild 

 rose, strawberrv. 

 carinata, Germ. South California. Grnpe-vine, and 

 a native plant, (Enothera {Pachylophus) eximius 

 (Desert Primrose), a weed of vineyards. 



* Professor N. M. Kula»in, recording insect's injurious to cultivated food- 

 plants in European Russia in HH4 (Bulletins of the Moscow Entomological 

 Society, i, pp. 136-161, Nov. 1915), includes Haltica eupliorbice, b\, as a pest 

 without actually mentioning the food-plant, but gives as the Russian name of 

 tlie insect the equivalent of "Flax flea-beetle." He also mentions Polygonum 

 avicnlare, L., E-pilohium angusfi folium, L., (Enothera biennis, L., and Ihomex 

 acutus, L., as food-plants of Haltica oleracea, L. 



