Smith, M. R. 1950c. Order Hymenoptera. Ants. Family Formicidae. Pp. 261-300 in: Weinman, C. J. (ed.) 1950. Pest control technology. Entomological section. New York: National Pest Control Association, vii + 365 + [50] pp.

Smith, M. R. 1951a. [Review of: Creighton, W. S. 1950. The ants of North America. Bulletin of the Museum of Comparative Zoology 104:1-585.]. The Scientific Monthly 72:63.

Smith, M. R. 1949b. A new species of Probolomyrmex from Barro Colorado Island, Canal Zone (Hymenoptera, Formicidae). Proceedings of the Entomological Society of Washington 51:38-40. PDF

Smith, M. R. 1949c. On the status of Cryptocerus Latreille and Cephalotes Latreille (Hymenoptera: Formicidae). Psyche (Cambridge) 56:18-21. PDF

Smith, M. R. 1949d. A new species of Camponotus, subg. Colobopsis from Mexico (Hymenoptera: Formicidae). Journal of the New York Entomological Society 57:177-181. PDF

Smith, M. R. 1949e. A new Leptothorax commonly inhabiting the canyon live oak of California (Hymenoptera: Formicidae). Psyche (Cambridge) 56:112-115. PDF

Smith, M. R. 1950a. On the status of Leptothorax Mayr and some of its subgenera. Psyche (Cambridge) 57:29-30. PDF

Smith, M. R. 1950b. [Review of: Creighton, W. S. 1950. The ants of North America. Bulletin of the Museum of Comparative Zoology 104:1-585.]. Proceedings of the Entomological Society of Washington 52:274-275. PDF

Smith, M. R. 1947h. Notes on Pheidole (Decapheidole) and the description of a new species (Hymenoptera: Formicidae). Revista de Entomologia (Rio de Janeiro) 18:193-196. PDF

Smith, M. R. 1947i. A new genus and species of ant from Guatemala (Hymenoptera, Formicidae). Journal of the New York Entomological Society 55:281-284. PDF

Smith, M. R. 1949a ("1948"). A new genus and species of ant from India (Hymenoptera: Formicidae). Journal of the New York Entomological Society 56:205-208. PDF

Smith, M. R. 1947e. A new species of Megalomyrmex from Barro Colorado Island, Canal Zone (Hymenoptera, Formicidae). Proceedings of the Entomological Society of Washington 49:101-103. PDF

Smith, M. R. 1947f. A generic and subgeneric synopsis of the United States ants, based on the workers. American Midland Naturalist 37:521-647. PDF

Smith, M. R. 1947g. A study of Polyergus in the United States, based on the workers (Hymenoptera: Formicidae). American Midland Naturalist 38:150-161. PDF

Smith, M. R. 1944f. A second species of Glamyromyrmex Wheeler (Hymenoptera: Formicidae). Proceedings of the Entomological Society of Washington 46:254-256. PDF

Smith, M. R. 1947a. Ants of the genus Cryptocerus F., in the United States. Proceedings of the Entomological Society of Washington 49:29-40. PDF

Smith, M. R. 1947b ("1946"). Ants of the genus Apsychomyrmex Wheeler (Hymenoptera: Formicidae). Revista de Entomologia (Rio de Janeiro) 17:468-473. PDF

Smith, M. R. 1947c. A new and extraordinary Pheidole from New Guinea (Hymenoptera, Formicidae). Proceedings of the Entomological Society of Washington 49:73-75. PDF

Smith, M. R. 1947d. A new species of Metapone Forel from New Guinea (Hymenoptera, Formicidae). Proceedings of the Entomological Society of Washington 49:75-77. PDF

Smith, M. R. 1944a. Ants of the genus Cardiocondyla Emery in the United States. Proceedings of the Entomological Society of Washington 46:30-41. PDF

Smith, M. R. 1944b. The ants of the genus Thaumatomyrmex Mayr with the description of a new Panamanian species (Hymenoptera: Formicidae). Proceedings of the Entomological Society of Washington 46:97-99. PDF

Smith, M. R. 1944c. A key to the genus Acanthognathus Mayr, with the description of a new species (Hymenoptera: Formicidae). Proceedings of the Entomological Society of Washington 46:150-152. PDF

Smith, M. R. 1944d. Additional ants recorded from Florida, with descriptions of two new subspecies. Florida Entomologist 27:14-17. PDF

Smith, M. R. 1944e. The genus Lachnomyrmex, with the description of a second species (Hymenoptera: Formicidae). Proceedings of the Entomological Society of Washington 46:225-228. PDF

Smith, M. R. 1943f. A new male legionary ant from the Mojave Desert, California. Lloydia 6:196-197. PDF

Smith, M. R. 1943d. The first record of Leptothorax, subgenus Goniothorax Emery, in the United States, with the description of a new species. Proceedings of the Entomological Society of Washington 45:154-156. PDF

Smith, M. R. 1943e. A generic and subgeneric synopsis of the male ants of the United States. American Midland Naturalist 30:273-321. PDF

Smith, M. R. 1942d. The relationship of ants and other organisms to certain scale insects on coffee in Puerto Rico. Journal of Agriculture of the University of Puerto Rico 26:21-27. PDF

Smith, M. R. 1943a ("1942"). A new North American Solenopsis (Diplorhoptrum) (Hymenoptera: Formicidae). Proceedings of the Entomological Society of Washington 45:209-211. PDF

Smith, M. R. 1943b. Ants of the genus Tetramorium in the United States with the description of a new species. Proceedings of the Entomological Society of Washington 45:1-5. PDF