Published in Proceedings of the Entomological Society of Philadelphia, in 1865, in volume 4, pages 242-313
Published in Proceedings of the Entomological Society of Philadelphia, in 1865, in volume 4, pages 381-384
Published in Proceedings of the Entomological Society of Philadelphia, in 1865, in volume 4, pages 208-212
On phytophagic varieties and phytophagic species, with remarks on the unity of coloration in insects
Published in Proceedings of the Entomological Society of Philadelphia, in 1865, in volume 5, pages 194-215
Published in Proceedings of the Entomological Society of Philadelphia, in 1865, in volume 3, pages 443-504
Published in Proceedings of the Entomological Society of Philadelphia, in 1865, in volume 5, pages 133-147
Published in Proceedings of the Entomological Society of Philadelphia, in 1865, in volume 4, pages 1-200
Published in Proceedings of the Entomological Society of Philadelphia, in 1865, in volume 4, pages 224-242
Published in ] Proceedings of the Entomological Society of Philadelphia, in 1865, in volume 4, pages 426-488