852 EXPEEIMENT STATION RECORD. 



Adia genitalis and Leptohylemyia coarctata, N. V. KuBDf&MOV (Trudy 

 Poltav. Selsk. Khoz. Opytn. StantsU, No. 21 {1914), pp. 43, figs. 27; abs. in Rev. 

 Appl. Ent., 2 (1914), Ser. A, No. 6, pp. 350-353).— X report of studies from the 

 Poltava Station of two dipterous enemies of wheat. 



An investigation into the relationship of the house fly to disease — the 

 special importance of the fly in infant welfare, D. B. Abmsteong (Amer. Jour. 

 Puh. Health, 4 (1914), ^^o. 3, pp. 185-196) .—The author presents the results of 

 preliminary investigations carried on in New York City by the Bureau of 

 Public Health and Hygiene, and in conclusion states that the Bureau is con- 

 vinced of the necessity of continuing the studies on a larger, more compre- 

 hensive, and complete scale for at least one other fly season before definite 

 positive conclusions can be reached. 



Combating elaterid larvae, D. Bobodin (Khutor{anin, No. 12 (1914), p. 382; 

 ais. in Rev. Appl. Ent., 2 (1914), Ser. A, No. 6, p. 3^^).— The author states that 

 elaterid larvae may best be combated by poisoned or other baits, consisting of 

 slices of potatoes, carrots, beets, oil cakes, cabbage stalks, etc., buried in 

 various parts of the field to a depth of 3 or 4 in. " These baits are poisoned 

 by adding to them either Paris green or arsenic, in which case they need no 

 further attention. In case of unpoisoned baits they must be inspected prac- 

 tically every week and the larvae found on them destroyed with boiling water. 

 [The author] also recommends maize baits, prepared as follows: About 0.25 

 lb. of white arsenic and 2.5 lbs. of maize well boiled in about 2.5 gals, of 

 water, care being taken not to inhale the vapor. The baits can be best used 

 in autumn and spring, before sowing or even afterwards, so long as the seed- 

 lings are not too high." 



Orchard bark beetles and pin hole borers, H. A. Gossard (Ohio Sta. Bui. 

 264 (1913), pp. 6S, figs. 22). — This bulletin reports studies carried on in coop- 

 eration with the Bureau of Entomology of this Department, represented by H. F. 

 Wilson, who was stationed in the infested region during the spring, summer, 

 and fall of 1908, a report by whom on the peach bark beetle has been previously 

 noted (E. S. R., 20, p. 955), The investigation was continued by L. L. Scott 

 in the summer of 1909, by R. D. Whitmarsh during the seasons of 1910 and 

 1911, and by J. L. King during the seasons of 1912 and 1913. 



The fruit bark beetle (Eceoptogaster rtigulosus) is first dealt with (pp. 6-30). 

 This pest, often called the shot hole borer, is the most common and attacks 

 nearly all species and varieties of orchard fruits. The peach bark beetle, which 

 ranks second in importance In Ohio, is next taken up at length (pp. 81-59). A 

 few other nearly related species, known as pin hole borers, have somewhat 

 similar habits but are of minor importance. These considered, briefly, are the 

 banded pin hole borer (Monarthrum fasciatum), the apple pin hole borer, or 

 apple strainer (If. mali), and the pear blight beetles Xylehorus dispar and X. 

 pyri. These pin hole borers made their burrows in the heartwood, but the ex- 

 ternal openings through the bark resemble the exit holes of the shot hole 

 beetles, except that they are smaller. The twig borers, namely, the apple twig 

 borer (Aniphicerus bicaudatus) and the red shouldered sinoxylon (Sinoxylon 

 hasilare) are also briefly noted. 



The biologies of the fruit and peach bark beetles are summarized by the 

 author as follows : " There are two broods per season of the fruit bark beetle 

 (E. rtigulosus), the adults of the first brood appearing during the latter half 

 of May, and in maximum numbers during the first half of June, the brood 

 being practically over by that time, though a few females linger for a month 

 longer. Eggs are laid in a few days after the appearance of the females and 

 hatch in three or four days. Each female deposits from 30 to over 100 eggs, 

 with an average of about 75 to 90. The larvae mature in 30 to 36 days after 



