452 



bins. The remedy is to clean out granaries and grain bins every few 

 months ; thorough fumigation with carbon bisulphide or hydrocyanic 

 acid gas should be given when necessary. Barypeithcs pellucidus, Boh. , 

 is a recentlv introduced weevil, found feeding upon dead leaves in an 

 apple orchard. It is said to attack strawberry plants in Europe. 

 Diestramwena marmorata, Haan (Japanese spotted camel cricket) is 

 nocturnal in habit, living under logs and stones and in moist woodlands. 

 These insects are said to be almost omnivorous, readily eating meat, 

 fruit and vegetables. If injury from them should become serious, 

 Kansas bait should be used to destroy them. 



Carbon tetrachloride was tested as a museum fumigant with very 

 satisfactory results. It was used at the rate of approximately one- 

 eighth pint to 2| cub. ft. of space. The insecticide was placed in a 

 series of several watch-glasses so as to secure a maximum evaporating 

 surface, and the case was tightly closed for 2 or more days. This 

 fumigation killed beetles and larvae^ but was apparently ineffective 

 against the eggs of Attagenus jnceiis, Oliv. (black carpet beetle). It 

 is a much safer fumigant than carbon bisulphide. 



This bulletin also contains a lengthy appendix which constitutes 

 Part V of the author's valuable monograph on gall midges. 



WoRSHAM (E. L.). Twentieth Annual Report of the State Entomologist 

 for 1917. — Georgia State Bd. Entom., Atlanta, Bull. no. 51, 

 JanuaiT 1918, 44 pp., 3 figs. [Received 19th August 1918.] 



Damage to cotton by Anthonomvs gmndis, Boh. (Mexican cotton boll 

 weevil) has on the whole been considerably less than in 1916. Research 

 work on this pest includes studies in hibernation, longevity, food- 

 plants, general biology and control. Dusting with arsenate of lead 

 and sulphur was tried, but more extensive experiments are necessary 

 before definite conclusions can be reached. The quarantine regulations 

 against this weevil are stringent. 



Dusting experiments against apple insects, which were compared 

 with liquid spray treatments, indicated the superiority of the former 

 method as regards codling moth {Cijdia 'pomonella). Dusting also 

 proved eft'ective on peach trees for the control of peach curcuUo 

 [Conotrachelus nenuphar]. The dilution of the active elements of 

 the dust spray with a cheap filler would considerably reduce the expense 

 of the mixture to the grower ; further experiments to determine the 

 extent of this dilution are desirable. 



The work on pecan insects begun in 1916 has been continued [see 

 this Review, Ser. A, v, p. 483]. Acrobasis nehidella (pecan-leaf case- 

 bearer) continues to be the most serious pecan pest in the State, and 

 has received considerable attention. Several new parasites have been 

 reared, bvit are as yet unidentified. The greatest mortality seems to 

 occur at the time of autumn migration, at emergence after hibernation, 

 and at the earliest feeding of the larvae in the spring. The total 

 annual mortality for the species is over 90 per cent. Spraying with 

 arsenate of lead and lime, as previously recommended \Joc. cit.\ con- 

 tinues to be beneficial ; in order to obtain the greatest advantage 

 an angled disc-nozzle should be used on one line of hose and a Bordeaux 

 nozzle on the other, one person dealing with the lower portion of the 

 tree and another with the top. Indications point to the fact that 



