MONTHLY LETTER OF THE BUREAU OF ENTOMOLOGY UNITED STATES DEPARTMENT OF AGRICULTURE August, 1927 GIPSY MOTH AND BROWN-TAIL MOTH INVESTIGATIONS A. F. Burgess, Senior Entomologist, In Charge Dr. I. M. Hawley, of Salt Lake City, Utah, J. G. Sanders, of Philadelphia, and Gonzalo Merino, in charge of Pest Control and Plant Quarantine at Manila, Philippine Islands, have recently visited the gipsy moth laboratory. S. A. Rohwer, E, B. O'Leary, and Dr. F. C. Craighead, of W3.shington, have also been in conference at the Melrose office within the month. C. R. Addinall, chemist, of the Harvard Graduate School, has ac-. cepted a temporary appointment to conduct investigations of- the injury caused by the reaction of lead and calcium arsenates on various types of foliage . In the week of August 15 A. F. Burgess attended the annual meet- ings of the Northeastern Entomologists. The meetings included trips through the orchard sections, and visits to the entomological laboratories in southern Pennsylvania, western Maryland, Virginia, and 7/est Virginia. On his return Mr. Burgess stopped for a day at Washington, to confer with Bureau officials. A. F. Burgess, H. L, Blaisdell, E. B. O'Leary, and H. L. McIntyre, Supervisor, Forest Pest Control for the State of New York, held a meeting at Pittsfield, Mass., on August 24 to discuss cooperative plans of gipsy moth work in the State of New York. J. V. Schaffner and C. M. Symonds, of the gipsy moth laboratory, conpleted on August 30 a two week's trip into Ne?/ York State, collecting native larvae to determine the dispersion of an imported gipsy moth para- site, Compsilura concinnata. : Although this tachinid is one of the best of the imported gipsy moth parasites, it is not dependent upon this host alone. It has been recovered from many native insects, and is knovm to be present at least 100 miles west of the gipsy moth dispersion line. Approximately 150 different collections were made. These were obtained from the south- eastern, central, and northeastern parts of the State, along a route v/hich included Monroe, Binghamton, Cortland, Sherburne, Cazenovia, Oneida, Syracuse, Parish, Rome, Pulaski, Watertown, Antwerp, Cgdensburg, Gouverneur, Potsdam, Malone, Paul Smiths, Champlain and Plattsburg. During the fall many parasite records are made from these collections, but in some cases the hosts must be held through the winter to obtain the parasites after hibernation. Number 160 LIBRARY eraTF. PLANT BOARD Ji\PANESE BEETLE IWVESTIGATIOITS Loren 3. Smith., Senior Entomologist, in Chnrge The season Tor the adult Japanese beetle is rapidly dra^7ing to a close. Tile unusual cool weather of Aiigust o.nd the eiiceptional amouirt of rainfall doTing tiie latter part of the month materially reduced the nun- Der of beetles. As a result, many teniporary employees have been relieved of their duties in connection with this laboratory. R. S. Lehman and E, Ching wbo have terminated their sumer work on the parasites of the beetle. Mr. Leiman has talcen a position at the Colorado Agricultural College, and Mr. Woo has returned to his home in Peyeechow, China. C. E. McDonnell, who has been affiliated with the Ehysiologicad Section for the last four summers, has left here to spend a, week in Washington wdth his father, C. C. McDonnell, of the Bureau of Chemistry and soils. On September 9 he v;ill return to Middiet owm. Conn., to re- sume his studies at Yfesleyan University. Mr. McDonnell is the 1927 foot- ball manager for Wesleyan. Lea.ving on August 23, E. R. Van Leeuwen, with 0. G. Aiderson, of uhe romology Department of Furdue University, motored to Michigan. Pro- fessor Anderson has been associated w/ith the Beetle Insecticide Section during the last tw70 months. Uathan Tischler, temporary assistant in the Section of Ecology, has resigned to engage in teonhing. Walter E. Fleming recently visited the plant of the Bal-ier Cantor Oil Co., at Jersey City, U. J., -and that of the Spencer Kellogg Co., at Edgewater, U. J., to obtadn different grades of oil to use in a neu car- bon disulphide solution which seems promising an a soil insecticide. Scouting in the present season has shown that the area in hew Jersey and Pennsylvania in wdiich the Japanese beetle is sufficiently numer- ous to inflict severe damage on economic plants has been somewhat extended. In central Ilew Jersey the area in vdiicli the beetle is continuously dis- triDuted now extends entirely across the State to the ocean, in the read on lylEig north of M^JJ.lica River and between that stream and Tom's River. The observations made this season bear out the previously noted fact that the extension of range of the beetle proceeds most rapidly to- w/ards the east, and that it is relatively slow in other directions, espc- ci.ally toxvai’ds the w/est. The earliest record for this year of tliird-instar grubs of the new/ generation w/as obtained on August 22. The earliest date of this event in pre- vious years w/as August 16, 1926, a fact indicating that the prevailing cool surmei’ has resulted in a slight retardation of the grov.dh of the larv.ae. - 3 - Tipr • . ~ popillia,vora. an iLTOorted parasite of the Japanese beetle, which recovered for the first time last season, has made excellent progress dnering the present season. It has no.w been recovered from tnree oi tne fonr original liberations, and is abt'ndant over an area, of more than three square miles. At the center of the colcip/ it has been destroying as many as 25 Japanese beetle larvae per scpiare yai’d of ground, without seriously depleting the '^mother*' colony, eno'ugli material has been collected for nine new colonizations v/idely scattered over the heavily infested area, C. ?. Clausen plans to leave India, early in October for a visit to the Qnited States. He will bring with him a large consignment of hop! Ilia par'hsites reared in India during the summer months. L. B. Smith and TA E. Fleming spent August 29 in Washington, D. C. , for conferences relative to investigations of soil insecticides. V. I. Safro has been engaged by the Hew eJersey Department of Agri- culture, and assigned to work on the suppression of the Japanese beetle. The plan of organized conmunity control, leading toward a general cairpaign of suppression in the heavily infested area, v/as developed during the past year by the Research staff at the Japanese Beetle Laboratory. TiCCOlTOMI C IITVESTI GATIOHS ■S. A. Sohwer, Senior Entomologist, in Charge A. B. Cahan will go to Europe early in September to stud:/ t:/pes of chalcid and braconid parasites in the collections of various museums. As it is necessary that he be given an opportunity to prepare himself for this trip, he has been relieved of administrative v/ork. Dr. Harold Morrison has been selected to assist in administrative work and to act ill charge in Mr. Rohwrer’s a.bsence. Dr. E. A. Chapin reports that the Dimmock notes, described in the Monthly ..^etter for J^one, have been placed in order in temporary binders, and are now available for anyone v/ho wishes to consult them. Miss Kathleen Doering, of the University of Kanse.s, visited the Division recently and SToent some time examining types of Cercopidae and other Hemiptera in the collections. Dr. T. Y. Ramalcrishna Ayyar, of the Madras Agricultural Depart- ment, CoimDato.re. , S. Ixidia, spent August 4- studying the collection of chalcids with I'^br. Gahan. Gonzalo Merino, of the Bureau of Agriculture, Manila, P. I., vis- ited the Division August 1 to meet the specialists and observe the methods of preserving specimens. Mr. Merino v/as especially interested in coleop- terous larvae, and spent considerable time in consultation v/ith Dr. Boving TRIJCIC-CHOP INSECT INVESTIGATIONS J. E. Graf, Senior Entomologist, in' Cliarge B. L. Bayden, of the Tampa, ' Ela. , laboratory, attended the sixth annual meeting of farmers and fruit growers at Gainesville, Ela,, Aug^rst 8 to 13, where he presented a paper on the sweet potato weevil. J. E. Graf visited Edverton, N. J, , on August 9, where tests in trapping and controlling the Japanese beetle v/ere under way at the Jap- anese Bootle Laboratory. H. E. Howard, of the Columbus, Ohio, Mexican bean beetle labora- tory, attended the meetings of the Northeastern Entomologists held at Gettysburg, Pa., and other points, Aughst 17 to 19. Before returning to Colurab'us he visited Washington for conference, W. H. White visited the Chadbourn, N.. C. , laboratory August 13 to 23, to discuss with W. A, Thomas research on the strawberry root louse, and other problems 'onder way there. Serious losses to strav/berry plant- ings have occurred in the Chadbourn section, and the cause has not been definitely determined. The indications are, however, that the strawberry root louse is a factor, and experiments will be inaugurated shortly to determine the extent of its responsibility. The temporary appointment of Dr. Clay G. luoff, who was appointed to undertake an investigation of the effect of bacteria on the development of the seed corn roaggot at the Chadbourn, N. C., laboratory, wa,s terminated on August 22. Dr. Huff will now be associated with the Zoological Depart- ment of the University of Georgia, at A.thens. C. E. Henderson, Agent, who sisent several months in the Argentine Republic, studying the natural enemies- of the s''ogar-beet leafhopper, re- turned to the United States via New Yora in the early part of August. En route to Berkeley, Calif., where he 'vvill continri.e his investige,tions on the sugar-beet leafhopper, he stopped off at Washington and discussed with some of the entomologists the results of his survey. He T/as unable to locate the sugar-beet leafhopper in Argentina. K. L. Cockerhan, of Biloxi, Miss., reports that E. Mortensen, As- sistant Entomologist, representing the Commonwealth of Australia, paid his staoion a visit on August 24. Mr. Mortensen is engaged in investigations on the prickly pear, and has spent some time in this country collecting specimens. S. E. Crumb, of Clarksville, Tenn. , and E. S. Charnberlin, of Quincy, Ela. , are now temporarily located at Tampa, Ela, , v/here they are conducting experiments on vacuum fumigation for the control of the cigarette beetle. o Messrs. Street, Wolcott, Olney, and Thorne, of the ITew fork Ag,vi~ cnltnral Corrimittee of the National Canners Association, visited the Geneva, IT. Y. , laooratorj^ in the latter part of Arignst, and discussed the Mexican Dean beetle insecticide tests with Rodney Cecil. R. E. Campbell, of Alhambra, Calif., reports that Dr. Demetrio D. de Torres, Agricultural Engineer, of the national Museum of Natural Sci- ences, Madrid, Spain, visited his laboratory in the early part of' August. TROPICAL AMD SU3TR0PIC.AL PLANT INSECT INVESTIGATIONS A. C. Baker, Senior Entomologist, in Charge James Zetek, of the field station at Ancon, Canal Zone, recently spent several weeks in the Rio Grande Valley of Texas, investigating conditions with respect to possible infestation by the Mexican fruit worm. In the last week in August he left for Tojapico, Mexico, to deter- mine the fitness of this locality as a site for a research laboratory on the fruit worm. After visiting Tampico he Till return to his laboratory in the Canal Zone. Miss B. M. Broadbent left Washington on Ar^ust 20 for Santa Cruz, Calif., T/here she will spend some time assisting Dr. Cole in his work on bulb pests. She will then proceed to New Orlecons, v/here she will conduct studies on ornamentals at the laboratory there. About the middle of August Dr. C. A. Weigel visited the Long Island bulb region and inaugurated a number of experiments on hot-water sterilization of narcissus bulbs. During the second week in August Dr. Bliss, of the New Orleans laboratory, made a trip throijgh the Gulf region, stopping at Bay St. Louis, Gulfport and Biloxi, Miss., in the interest of the camphor scale investigations. He improved this opportunity to visit the men at the Truck Crop laboratories at Gulfport and Biloxi. E. D, Hcldaway, of Australia, and Demetrio Delgado de Torres y de Q,uiros, of Madrid, Spain, were visitors at the New Orleans laboratory in August. E. H, Bliss, of Sandusky, Ohio, has been given a temporary ap- pointment as Eield Assistant at the New Orleans laboratory for the latter part of the summer. FOREST IFSECT IMESTIGATIOITS F. C. Craifghead, Senior Entomologist, in Cliarge Dr. F. C. Craighead spent the early part of Angust inspecting the Forest Service control y;ork on the Colorado National Forest, and confe^?- ring with Dr. M. V/. Blackman, v;hO is condncting Biological studies there on the Black Hills beetle. In the latter part of Atigust he spent a week reviewing the work on tv/o projects in the Few' England States — the white pine whevil and the bronse birch borer,. William Middleton attended the meetings and field trip of the Northeastern Economic Entomologists, leaving Washington Aogust 17 and re- turning August 19. ' On July 10 Stanley Garthside, Forest Entomologist, from Sydney, Australia, arrived in Asheville and spent a few' days at the Bent Creek Laboratory to note whak entomological investigative projects w;ere being conaucted there. Mr. Gs-rthside is traveling 'tinder the auspices of the Australian Government, and expects to visit stations in various parts of the United States, Canada, and Europe, before returning to. Australia in 19fc/8. Ho has just completed some studies at Cornell University, and ex- pects to attend the University of Minnesota this fall, to continue his studies. . ■ On July 14 J . A. Beal, H. E. Balch, and H. A. St. George, in com- pany with Dr, C. F. Eorstian, Dr. and Mrs. Kessel.man, from Roumania, and Dr. R. M. Nelson, visited the release cutting poplar plots located at the foot of Lookingglass Rock in the Pisgah National Forest. The poplar w'as looking especially promising, as \7ell as the black locust. The latter spe- cies W'as protected by hardw/oods for several ' years , and now/ occupies the upper story and is free from borers. Practically all of the locust ob- served grov/ing in the open and not protected by shade is severely dam.aged by locust borers. T/iese observations reaffirm Dr. Craighead's conclusions thak shade is an important factor in protecting yo’jng locust trees from injury by borers. On July 15, 17, and 18 an outbreak of the hickory barkbeetle, (Eccopto.aaster quadr i spin o sus ) \'/as discovered at Sw/annanoa, N. C. It has been in progress since the fall of 1925, w;hen severe drought weakened many hardw/oods and conifers. The outbreak w/as rapidly increasing in sise, and if it had not been checked v/ould undoiibtedly have killed a.11 of the hick- ories in its vicinity w/ithin the next tw/o or three years. The southern pine beetle (Dendroctonus frontalis Zimin, ) v/hich has been rather inactive since spring, w/as discovered in numbers in the last tv/o or three weeks. - 7 - BISE CULTURE lEVESTTC-ATIOES James 1. PlamlDleton, Apiculturist , in Charge Dr. A. E. Lundie, formerly connected 7/ith the Division of Dee Cul- ture Investigations, and no-v Apiculturist of the Union of South Africa, reports in a recent letter that about five and one-half times more bee- keeping equipment was sold in South Africa in 1926 than in 1923. This lact is excellent indication of the progress Doctor Lundie is making in promoting apiculture. He also says tliaf the two films on beekeeping from the United States Department of Asriculture v/ere shown in connection with the UitT;atersrand Agricultural Society Show in Johannesburg. iiyhile on an extended trip through a number of the Eastern States Dr. E. E. Phillips visited the Bee Culture Laboratory for several days in August . Senor Demetrio D. de Torres Y de Quiros, Ingeniero Agronomo, Del Musea Hacional de Ciencias ITat'orales, Madrid, Spain, who has just finished graduate T/ork in economic entomology at Cornell University, recently con- sulted ?/ixh various members of the Bee Culture staff in regard to apicul- tural work in this country, A large and successful interstate beekeepers* meeting was held at Hamilton, 111., August 9, 10 and 11. C. P. Dadant, editor of the American Bee Journal, and one of the pioneer beekeepers in this country, and his sons, were hosts to many of those who attended. The Department of Agricul- ture was represented by Jas. I. Hambleton. E. L. Sechrist judged the bee and honey odiibit at the Ohio State Eair^ on Aiigust 29 and 30. This fair has Oxie of the largest and best bee and noney exhibits in the United States. The exhibit tliis year was one of unusual interest because of the fact that the premium lists on honey were based on the United States standard grades for honey, which have just been announced. There are indications that the United States standard grades for honey are attracting considerable attention in a number of foreign coun- tries. The follo?;ing paragraph in recent correspondence with a domestic firm indicates the receptive manner in which these grades are considered by the trade: ''We appreciate very much indeed the work the U. .3. Department of Agriculture has done in inaugurating uniform methods for grading honey, be- cause heretofore you never knew what you received when you bought a certain quantity of honey; the opinions as regards color differed too much. We are no?/ buying honey from the producers on basis of Department of Agricul- ture certificate final, and we are trying to make oiur European customers agree to the same terms." - 8 - COTTON INSECT INVESTIGATIONS INVESTIGATIONS OE INSECTS AFFECTING MAI ATE AIIMALS J. L. V/eto, Associate Entomologist, Acting in Chc.rge Demetrio D. de Torres, of Spain, paid a short visit to the Dallas, Tex., Laboratory in. August,- and E. G. Holdar-ay, of the Australian Council for Scientific and Industrial Research,, also spent tv/o days at Dallas, after which he visited the field. Islooratories at Uvalde and Sonora. Both men were interested in the poultry parasite investiga.tions , and Mr. Holdaway was especially interested in the studies of the screw worm fly and other blow flies, on account of a somewhat similar problem which is serious with the sheep raisers, of Australia. A nev/ dusting airplane was p-orchased for the Cotton Insect field station at Tallulah, La., from the Keystone Aircraft Corporation, Bristol, Pa. R. L. Mitchell, adrplane pilot stationed at Tallulah, flew the plane from. Bristol to TalDAah. -J. K. V, Stewart, a terajporary field assistant stationed at Tallu- resigned on August ,10. LI3RA.RY Mabel Colcord, Librarian NEW : BOOKS • hgricult'oral insecticide and fungicide manufacturers* association. Bulletin No. 6, 35 p. Philadelphia, Pa., May, 1927. Anoreux, P. J. Notice des insectes de la France r^putds venimeux. 302 p. Paris, Rue et Hotel Serpente, 1789. Bait sell, G. A, Manual of biological forms. Rev. ed. 411 p. New York, Macmillan Co., 1927. Bouvier, ^E. L. Etiide Gur les Ce rat o camp ides de la collection Charles Oberth^or. Innales des Sciences Naturelles. Zoologie, v. 10, fasc. 2, p. 233-286, pi. I-III, 1927. Box, H. E, Notas sobre dos insectos perjudiciales a las matas de cafe en Venezuela. *19 p. , 10 fig. Caracas, Empresa et Cojo, 1927. British Museum (Na,tural History), Catalogue of the type specimens of Lepidoptera Rhopalocera in the Britisli Museum. Pt, III, Nymphalidae, by A. G. Gabriel. 128 p, London, British Museum (Natural History), 1927. Brittain, W. H. The cabbage maggot, 53 p. (inc. 3 pi.), 15 tab. (Nova Scotia Dept, of Nat. Res. Bulletin No. 11.) Nova Scotia, Dept, of Nat. Res. 1927. - 9 - Cassino, S. E., The naturalists’ directory. 315 p, Sanrael E. Cassino, Salem, Mass. , 1927. ' * ' • ' Combes, Marguerite, Sur la "Hdpugnance des fourniis a se laisser choir” etudi^e par Sir John Lubbock. Annales des Sciences Faturelles. Zoologie, V. 10, fasc. 2, p. 223-231, 1927. Congresso Brasileiro de Hygiene, 3d, Sao Paulo, 1926. Terceiro congresso brasileiro de hygiene, Sao Paulo, 4al2 noyembro de 1926, 86 p. Sao Paulo, Brasil, 1927. France. Departement des Deuk-Sevres. Direction des Services .Agricoles. ...Le doryphore dans les Deux-Sevres en 1925. 15 p. Eennes, Imprimeries Pennies (Societe cooperative) ■ 1925. Carman, ' Philip, The Odonata or dragonflies of Connecticut. 331 p. , 67 fig., 22 pi. Hartford, State Geol. & Hat. Hist. Sui'vey, 1927. [Conn. State Geol. & Hak. Hist. Survey Bu.1. 39 (Guide to the Insects of Connec- ticut, Pt. V).] Ghosh, C. C. Instructions on beekeeping. 8 p. , 11 figs. Rangoon, Supt. Govt. Printing and Stationery, Burma, 1926. (Dept. Lgr. Burma, Bulletin 17.) Ghosh, C. C. Instructions on silk-v;orm rearing. 20 p. , 19 figs. (Dept. Agr. Burma, Bulletin 21.) Rangoon, Supt. Govt. Printing and Stationery, Burma, 1926. Gimmerthal, B. A. ...Beitrag zu einer kmftig zu bearbeitenden Dipterologie Russ- lands, IJos. 1-3, 1845-1847. Hardenburg, E. 7. Bean cultui'e, 238 p. , illus. Hew York, Macmillan Co., 1927. (Chapter X, Insects and their control, p. 100-H3, ) Houlbert, C. Thysanoures-Dermapteres et Orthopteres de Prance et de la Paune Ei.iropdenne , v. 2. 357 p. Paris, Gaston Doin et Cie, 1927. (Encyclopedie scientif ique. ) Huff el, G. Econom.ie forestiere. Ed. 2, v. 1, pt. 1. 342 p. Paris, Lucien Laveur, 1910. International Cotton Congress. Official report of the International Cotton Congress held in EgJ'P^i 1927, by the International Federation of Master Cotton Spinners' and Manufacturers' Associations. Under the high patron- age of H. M. Fouad I, King of Egypt. 263 p. , illus. 1927. (Williams, C, B., Destruction of pink boll-worm, p. 49-52.) Kniphofio, I. H. De Pediculis inguinalibus insect! s et verminibus homini molestis. 51 p. , 3 tab. Erfvrti Stanno Heringiano, Acad. Typogr. 1759. Lefort, G. Le doryphore de la pomme de terre. 16 p. 1926(?). 10 - Lindner , Ervdn . Die Eliegen der palaearktisohen Eegion. Lfgs. 16-19, Trypetidae, p. 1-221, Taf. 1-17* Stuttgart, E. Schy/eizerLart, 1927. London School of Tropical Medicipe. Researches in , Polynesia and -.Melanesia. , . in 1924, 1925. Farts I-IV (relating principally to medical entomology). By P. A. Buxton and G. H., E. Hopkins. 260 p, , 12 pi. 89 tab. 43 figs. London, School of Tropical Medicine, 1927. Bibliography: p.232- 256, “ Louisiana Planter and Sugar Manufacturer Co., Inc. The reference book of the sugar industry of the world. ^ V. 5, Ho. 5, July, 1927. McCoui'tie, W. B. ■Eiere and how to sell manuscripts; a direcfory for writers. Ed. 4, 482 p. .■ .Springfield, , Mass. , The Home Correspondence School, [circa 1927] . MacLeod, Julius. The quantitative method in biology. Ed. 2. 228 p. Her; York, Longmans, Green & Co., 1926. Malpighi, .Marcelli. . . . .Dissertatio epistolica de Bombyce. 100 p,, 12 pi. Londini, Joannemi Martyn & Jacobium Allestry, 1669. Hew.-York Academy of Sciences, . - ■ Scientific survey of Porto Rico and the Virgin Islands, v. 9, Ho. 1, Mammals of Porto Rico living and extinct - Ghiroptera and Insectivora. By H. E. Anthony. 96 p. , 28 fig., 15 pi. Academy of Hatural Sciences, New York, 1925, . ■ New York State Department of Health. , Standard methods of the Division of Laboratories and Research of the New York State Department of Health. 704 p. , illus. Baltimore.r Vvilliams & Nilkins Co., 1927. Ontario Department of Agriculture. Eifty-‘seventh annual report of the Entomological Society of Ontario, 1926. .63 p. Toronto, Yne United Press, 1927. Parsons, J. K. An introduction to the study of colour vision. Ed. 2. 323 p., 94 fig., col. pi., Cambridge, University Press, 1924. (Cambridge psychological librai-y. ) Pawlowsk^", E. N. and Stein, A. K. Experimentelle Untersuchung uber die Giftv/irkung von Paederus fuscipes Curt. (Coleoptera, Staphylinidae) auf den Menschen. Archiv flir Schiffs-und Tropen-Hygiene, v. 31, heft 6, p. 271- 282-, 4 fig., 1927, Saint-Hilaire, K. Ilisto-physiologische Studien uber die Spinndrusen der Tenthredini- denlarven. Seits. f. Wissenschaf tliche Biologie. Abt. B (Zeits. f. Zellf orsch■l^ng und raikroskopische Anatomiie) v. 5, heft 4, p. 449-494, 89 fig., 1927. 11 S chnl z e , Paul . Siologis der Tiere Deutschlands. . . Lfg. 25* (Tell 18: Pseudo- scorpiones, von A. Kastner; Tell 40; Ipidae, von Heinrich E. I^iclimann; Lampyrinae von R. Vogel.) p, 1-58; 347-391, Berlin, CTehrilder Borntraeger, 1927. Senguerdii, Wolferdi. Tractatus physicus de Tarantu]..a. 87 p. . Lvgdvni , Bat. GaaeBeeckios, 1668. Sklenar, 0. G. Mein Eienenniiiitterchen seine Zucht und Pflege. 171 p. 1922. Smeathmann, Heinrich. ...Ueher die.^Bermiten Afrikas ujid anderer heissen Klimate. 112 p., 2 pi., Gottingen, Johann Christian Dieterich, 1789. South London Entomological and ITatural History Society. Proceedings, 1926-27. 155 p. , 11 pi. London, Puh. at the So- ciety's Rooms, 1927. Stichel, Wolfgang. Illustrierte Bestirnmungs-Tabellen der deutschen Wanzen (Hemiptera- Heteroptera) , Lfg. 5 ser. Anonychia Reuter (Eorsetzung) . p. 121-146, fig. 318-381. Berlin-Hermsdorf , W. Stichel, 1927. Strickland, E. H. Wireworras of Alherta (a preliminary report). 18 p. Edmonton, Univ. of Alherta, 1927, (Univ. of Alherta. College of hgr. Research hul. no. 2.) Trautmann, W. Die Goldv/espen Euxopas. Weimar, G. Uschma.nn, 1927(?). 194 p. 4 pi. (2 col. ) . 'i^heeler, IL M, Les societes d' insectes. 463 p. , 61 fig. Paris, Gaston Doin et Cie, 1926. (Inden hihliographique , p. 399-444.-,) Wilder, J. J. Wilder's system of beekeeping. 93 p., illus, Waycross, Georgia, 1927.' Zander, Enoch. Bienen und Bienenzucht. 102 p., 41 fig. Leipzig, B. G. Beuhner, 1919. Zander , Enoch , Ohs than und Bienenzucht. 48 p. , 22 fig. Stuttgart, Eugen Ulmer, 1922 . Ziegler, A., and Branscheidt, P. Pollenphysiologische Untersuchj^gen an Kern und Steinohstsorten in Bayern -und ihre Bedeutung fur den Ohsthau, 104 p., 4 pi. Berlin, Paul Parey, 1927. ■ iiii