Published in Transactions of The American Entomological Society, in 1891, in volume 18, pages 1-31

Published in Transactions of The American Entomological Society, in 1891, in volume 18, pages 32-48

Published in Transactions of The American Entomological Society, in 1891, in volume 18, pages 49-66

Published in Trans. Amer. Ent. Soc, in 1891, in volume 18, pages 67-91

Published in Transactions of The American Entomological Society, in 1891, in volume 18, pages 103-135

Published in Transactions of The American Entomological Society, in 1891, in volume 18, pages 277-336

Published in Transactions of The American Entomological Society, in 1891, in volume 18, pages 337-348

Published in Transactions of the American Entomological Society (1890-), in 1891, in volume 18, issue 2/3, pages 177-276