PROC. ENTOMOL. SOC. WASH. 80(2), 1978, pp. 264-295 LECTOTYPE DESIGNATIONS OF CERTAIN SPECIES OF THRIPS DESCRIBED BY J. D. HOOD AND NOTES ON HIS COLLECTION (THYSANOPTERA) B. R. Pitkin Abstract. — Corrections to the published lists of J. D. Hood's papers and list of new names are given. Lectotypes are designated for 100 species described by Hood. Lectotypes designated by other authors for Hood's species are listed. Notes on Hood's collections and published papers are given. J. Douglas Hood described 1,038 new species and three new varieties of thrips or Thysanoptera. This represents about 20% of the presently esti-mated 5,000 described species. Hood also erected 138 new genera and subgenera and proposed three new specific names including Thrips illicii for Thrips ahjsii Hood. Thirteen of the new species and four of the new genera were described in collaboration with C. B. Williams, (Hood and WilHams, 1915; Hood and WilHams in Hood, 1925 (54)). Bibliographies of Hood's scientific papers and lists of the new names proposed in them have been pubHshed by Bailey (1949) for 1908-1942 and O'Neill (1974) for 1948-1960. No papers by Hood were published between 1943-1947, due no doubt to the second World War. Hood (1948) also published a list of the papers he had had pubHshed up to that time. Both Hood (1948) and O'Neill (1974) numbered Hood's publications and I have used these numbers in parentheses after date of publication through-out this note. Unfortunately Hood 1948 (133) gave the same number. Hood 1909 (4), to two different papers (referred to by Bailey (1949) as Hood 1909a and 1909b) and omitted one paper (referred to by Bailey (1949) as Hood, 1915g). The paper by Hood, 1937 (104), concerns new genera and species from Africa not America (Hood, 1948 (133)). O'Neill (1977) omitted Hood, 1958 (174), from her list of Hood's papers and omitted Helionothrips compressus Hood, 1954 (153): 192-193, from Formosa from the hst of Hood's new names. Unfortunately Hood, 1948 (133), did not publish a Hst of names, and Bailey (1949) very occasionally cited the date of publication of Hood's papers incorrectly. Thus Hood 1924d was not pubHshed until January 1925 (51); Hood 1927i in January 1928 (71); Hood 1929 in January 1930 (73); Hood 1933b in January 1934 (86); Hood 1933e in Febmaiy 1934 (87); Hood 1938] in January 1939 (121); and Hood 1941b in January 1942 (132). In addition Cordijlothrips penivianus was described by Hood in 1937 (110) not in 1927, and Hyidiothrips atomarius was described by Hood in 1938 (116) not in 1948. Moreover Bailey misspelled a few specific names