ECONOMIC ZOOLOGY — ENTOMOLOGY. 159 



Sonie insects injurious to forests. The locust borer, A. I). Hopkins ( U. S. 

 Dept. A (jr., Bur. Hut. Bill. 58, pt. 1, pp. lU, pi. 1, fi(;s. (i). — Attention is called to 

 the unusually serious depredations by this insect upon tlie black locust. In 

 feouje localities the damage has been so great as to be unprofitable to grow tlie 

 tree for sliaile or tiiiii)er. The autlior considers it unadvisable, however, to 

 abandon all attenii)ts to cultivate the locust on account of the presence of the 

 borer. 



Detailed notes are given on tlie liaiiits and life liistory of tliis species and on 

 its distril)uti()u. With regard to tlie control of the locust borer the author sug- 

 gests that infested trees be cut between the first of May and middle of Septem- 

 ber and utilized in sncli a way as to destroy the inunatiu'e forms of the insect 

 in the bark and wood. It may be possible to find localities in which the l>orer 

 is not particularly injurious. The insects may also be readily collected from 

 the flowers of golden-rod. Exiieriments will be conducted to determine whether 

 a resistant race of Idack locust trees cnn l»e pi'opagated. A bibliography of 

 the articles relating to this insect is also given. 



The principal insects injurious to the cocoanut palm, C. S. Banks (PliiUp- 

 pine Jour. <S'C(., 1 {1906). .A"o. >. pp. UiS-KH, pU. 11). — Orijcte^ rhinoceros is 

 most frequently found in heaps of decaying vegetation. The larvje attack the 

 f.oft-growing point of the cocoanut. This pest is described in its various stages. 



The injurious attack of the insect proceeds from above downward. The adult 

 beetle makes burrows for egg laying and for securing food, and nearly all 

 cocoanut trees in the Philippines are eaten somewhat by this pest. Direct 

 remedies are very difficult to apply, liut considerable benefit may be derived 

 from cleaning away all weeds, underbrush, and other rubbish underneath the 

 cocoanut trees. Notes are also given on the habits, life history, and injurious 

 attacks of Rhyncliophorus ferruffiiiciis and other insects which attack the wood 

 of the cocoanut. 



The corn root louse, J. J. Davis (III. A{/r., 10 {1906). Xo. 7, pp. 213-218. figs. 

 6). — The economic importance and distribution of this pest are briefly described 

 and notes are given on the amount of damage which it may cause if left with- 

 out any treatment. The pest is cared for by the common brown ant. Notes are 

 given on the success which has recently been had by the Illinois Experiment 

 Station in combating this pest by thorough cultivation of the soil before planting 

 and late in the fall. 



The cotton worm, It. S. Woglum {X. C. Dept. Agr. Ent. Circ. 16. pp. 8). — 

 The habits, life history, and means of combating this pest are briefly described. 

 As artificial remedies, dusting with Paris green mixed with flour or air-slaked 

 lime, and spraying with Paris green and lime in water are recommended. 



Experiments to control the pea worm, N. S. P>laik (Caiifida E.rpt. Farms 

 Rpts. 190.'). pp. .ill. .?/.M. — Pea vines were sprayed with Paris green at the rate 

 of \ lb. to 40 gal. of water to which a little whale-oil soap was added to make 

 the mixture adhere more thoroughly. In some cases the amount of Paris gi'een 

 was doubled. It appears that the early varieties of peas are much less subject 

 to injury from the pea worm tlian the later varieties. Spraying with Paris 

 green just as the pods are begiiniing to foi'm appears to be not so effective as 

 when the o])eration is done a little later. 



Combating the grain weevil, M. Albrecht {Wclinschr. TierheUk. u. \'ieh- 

 zucht. y.) (1905), Xo. 52. pp. 826, 827). — On account of tlie great destruction 

 which this insect causes to corn and other cereal grain, a number of remedies 

 have been suggested for controlling it. According to the author, if dry sand 

 be mixed with grain infested with the weevil, the insects will crawl out of the 

 grain as soon as possil)le and will not penetrate back into the sand. They may 

 therefore be easily destroyed on the surface of the sand. 



