162 EXPERIMENT STATION RECORD. 



Poisoning the potato beetle, F. H. Hall, W. H. Jordan, et al. (New York 

 State Sta. Bui. 267, popular ed., pp. 11, Jigs. 2). — A popular summary of Bulletin 267 

 of thf station noted above. 



The bulb mite, R. S. Macdougall (Jour. B<l. Agr. [London], 11 (1905), No. 12, 

 pp. 748-751, figs. 2). — Rhizoglyphus echinopus feeds on the underground stems and 

 roots of tulips, hyacinths, onions, and on potatoes and other plants. The insect is 

 described in its different stages and notes are given on means of combating it. 



In cases of bad infestation it is stated that the best way of controlling the mite is to 

 burn infested bulbs and thoroughly sterilize infested soil. The mite may also be 

 destroyed by spraying bulbs with kerosene, washing them in a solution of sulphid 

 of potassium at the rate of 1 oz. to 3 gal. of water, or fumigating with bisulphid of 

 carbon. 



Cabbage root maggot. Poisoned bran for cutworm, W. 8. Blair (Canada 

 Expt. Farms Rpls. 1904, pp. 362-364) .—Cabbage was treated for root maggot with 

 hellebore, kerosene emulsion, Paris green, and tar paper disks. Hellebore gave the 

 best results (2 to 4 oz. to the gallon of water). 



Paragrotis ochrogaster in gardens was easily controlled by the use of a poisoned bait 

 containing 3 oz. Paris green per 10 lbs. bran. 



The imported cabbage worm, F. H. Chittenden ( U. S. Dept. Agr., Bur. Ent. Circ. 

 60, pp. 8, figs. 6).—Pontia rapse is described in its various stages and notes are given 

 on its life history. The species was introduced about 50 years ago, and is far more 

 injurious than the native species. It is a serious pest from Canada to the Gulf 

 region. 



The imported cabbage butterfly feeds on all crucifers and various ornamental 

 plants such as mignonette, Cleome, etc. Numerous parasites and predaceous insects 

 help to keep the pest in check. The best remedy is spraying with arsenicals. 

 Poisoned bran mash, hot water, kerosene emulsion, pyrethrum, clean cultivation, 

 hellebore, and other remedies have been tried with more or less benefit. 



The cabbage hair-worm, F. H. Chittenden ( U. S. Dept. Agr., Bur. Ent. Circ. 

 62, pp. 6, fig. 1). — Mermis albicans, a species of hair-worm, was found in heads of 

 cabbage in certain Southern States in 1903. Exaggerated stories were circulated 

 regarding its poisonous properties. These were shown to be without foundation. 

 Repeated experiments showed that the worm is not poisonous. It lives as a parasite 

 in the body of grasshoppers, codling moth, and other insects. The life history of 

 the worm is discussed, and miscellaneous information presented concerning it. 



The biology and systematic position of Otiorhynchus turca, A. A. Ssilantiew 

 (Zool. Jahrb., Alt. System. Geogr. u. Biol. Thiere, 21 (1905), Xo. 7 ', pp. 491-502, Jigs. 

 8).— This pest of the grape vine has been known since 1843. The insect is carefully 

 described with particular reference to anatomical details and to its life history. The 

 hibernating beetles attack the buds and young leaves in early spring. The eggs are 

 laid about the middle of June. The author reports that all the beetles which he 

 collected from June to September were females and he was unable to explain this 

 fact. 



Insect injuries to forest products, A. D. Hopkins ( U. S. Dept. Agr. Yearbook 

 1904, pp- 381-398, figs. 14).— An account is presented of the injuries caused by 

 ambrosia beetles, round-headed borers, flat-headed borers, timber worms, powder 

 post borers, white ants, carpenter bees, etc. The conditions which are favorable to 

 insect injury of this sort are also outlined. 



The nut weevils, F. H. Chittenden ( U. S. Dept. Agr. Yearbook 1904, pp. 299- 

 310, pis. 3, figs. 10). — A detailed discussion is presented on Balaninus proboxciaeus, B. 

 rectus, B. caryx, and B. obtusus. The first two species affect chestnuts, the third 

 pecans, and the last hazelnuts. Successful remedies against chestnut weevils are 

 bisulphid of carbon, scalding and drying, dry heat or cold storage. Hogs may be 

 allowed in pecan orchards to destroy infested nuts. 



