379 



of Wisconsin, the long drought having dried up their natural breeding- 

 places, with the result that they migrated to grain and hay fields 

 The best poison bait proved to be bran, arsenic, salt and banana oil. 

 The corn ear worm [Heliothis obsoleta] was very numerous and destruc- 

 tive, and no specific remedy is known for it. The climatic conditions 

 w^ere so favourable to the northern tobacco or tomato worm [Protoparce 

 ■celens] that a second generation appeared in late August and September. 

 An effective remedy consisted of a dust of 1 part lead arsenate to 

 8 parts air-slaked lime, or a spray of 2 lb. lead arsenate to 50 U.S. gals. 

 of water. 



Cherry trees were so heavily infested with black cherry aphis [Myziis 

 cerasi] that many lost their foliage and the fruit was bitter and under- 

 sized. The correct treatment has not been determined, but tests are 

 being made of 1 part nicotine sulphate to 1,000 parts water, with 2 lb. 

 soap to each 50 U.S. gals, of spray. The cultivation of peas has con- 

 siderably decreased owing to the ravages of the pea moth [Cydia 

 nigricana]. Sowing should be as early as soil conditions permit, and 

 peas should not be planted two years in succession. As the prevaihng 

 wind is generally northerly during che time of flight, it has been found 

 that fields south, or even west or east, of the previous year's plantings 

 suffer less than those to the north. 



The potato leaf-hopper [Empoasca mail] destroys whole fields of 

 early potatoes by the hopperburn that it causes. The remedies advo- 

 cated by Dudley are quoted [R.A.E., A, ix, 31]. It has been found 

 that musk melons are also susceptible. 



The effect of nicotine dust on various insects is described. The 

 indications are that, given a higher nicotine content, and a machine 

 that will throw the dust out in a cloud, these dusts are of great value 

 against many chewing and sucking insects, but cannot be used to 

 replace arsenicals against such insects as Colorado potato beetle 

 [Leptirwtarsa decemlineatd] and cabbage worms \_Pieris\. 



CocKEKELL (T. D. A.). Some Coccidae found on Orchids (Horn.). 



■ — Ent. News, Philadelphia, Pa., xxxiii, no. 5, May 1922, p. 149. 



The Coccids recorded are Aonidia pseudaspidiotiis, Lind., on stems 

 of Vanda teres ; Chrysomphalus dictyospermi, Morg., on Coelogyne 

 cristata ; and Diaspis boisdiivali. Sign., on Laeliocattleya victoriae and 

 Odontoglossum rossi. These records are all from Colorado. 



Hayes (W. P.). The External Morphology of Lachnosterna crassis- 

 sima, Blanch. (Scarabaeidae, Coleop.). — Trans. Amer. Micr. Soc, 

 Menasha, Wisco}isin, xli, no. 1, January 1922, pp. 1-28, 9 plates. 



The contents of this paper are indicated by its title. 



Section on Apiculture. — Jl. Econ. Ent., Geneva, N.Y., xv, no. 2, 

 April 1922, pp. 121-146. 



The series of papers in this section dealing with apicultural problems 

 comprises : Essentials of Apiary Practice and Management, by M. 

 Pettit ; The Correlation between some Physical Characters of the 

 Bee and its Honey-storing Abilities, by J. H. Merrill ; Time and 

 Labor Factors involved in gathering Pollen and Nectar, by W. Park ; 

 The Cost of Poor Queens, by F. B. Paddock ; Factors affecting the 

 Success of American Foulbrood Campaigns, by S. B. Fracker ; and 

 Relation of Climate to Beekeeping ]\Ianipulations, by H. F. Wilson. 



