Published in Proc. ent. Soc. Wash., in 1891, in volume 2, pages 28-37

Published in Proc. ent. Soc. Wash., in 1891, in volume 2, pages 44-46

Published in Proceedings of the Entomological Society of Washington, in 1891, in volume 2, pages 73-77

Published in Proceedings of the Entomological Society of Washington, in 1891, in volume 2, pages 101-105

Published in Proceedings of The Entomological Society of Washington, in 1891, in volume 2, pages 119-123

Published in Proceedings of the Entomological Society of Washington, in 1891, in volume 2, pages 123-124

Published in Proc. Ent. Soc. Wash, in 1891, in volume 2, pages 134-146