1941. Host-parasite relations of _Moniliformis dubius_ (Acanthocephala) in albino rats, and the environmental nature of resistance to single and superimposed infections with this parasite. Amer. Journ. Hyg., vol. 33, sect. D, pp. 1-21. BURR, M. 1898. Orthoptera collected in South-Eastern Europe. Ent. Rec. and Journ. Var., vol. 10, pp. 1-5. 1899. Mimicry in Orthoptera. Ent. Rec. and Journ. Var., vol. 11, pp. 48-50. 1899a. Parasites of Orthoptera. Ent. Rec. and Journ. Var., vol. 11, pp. 186-187. 1899b. Local Orthoptera in 1899. Ent. Rec. and Journ. Var., vol. 11, p. 333. 1900. On the British Orthoptera in the Hope Museum, Oxford. Ent. Rec. and Journ. Var., vol. 12, pp. 97-99. 1908. Orthoptera in east Kent. Ent. Rec. and Journ. Var., vol. 20, pp. 275-278. 1911. Orthoptera in the Canary Islands. Ent. Rec. and Journ. Var., vol. 23, pp. 92-95, 175-178, 193-195. 1913. Collecting Orthoptera in the Caucasus and Transcaucasus. Ent. Rec. and Journ. Var., vol. 25, pp. 12-15, 37-41. 1923. A contribution to our knowledge of the Orthoptera of Macedonia. Trans. Ent. Soc. London, 1923, pp. 110-130. 1926. In Northeast Siberia. Ent. Rec. and Journ. Var., vol. 38, pp. 97-101. 1937. _Periplaneta orientalis_ L. in the open. Ent. Rec. and Journ. Var., vol. 49, p. 115. 1939. The insect legion. 321 pp. London. BÜTSCHLI, O. 1871. Untersuchungen über die beiden Nematoden der _Periplaneta_ (_Blatta_) _orientalis_ L. Zeitschr. Wiss. Zool., vol. 21, pp. 252-293, 2 pls. 1878. Beiträge zur Kenntniss der Flagellaten und einiger verwandten Organismen. Zeitschr. Wiss. Zool., vol. 30, pp. 205-281, 5 pls. 1881. Kleine Beiträge zur Kenntnis der Gregarinen. Zeitschr. Wiss. Zool., vol. 35, pp. 384-409, 2 pls. BUXTON, P. A. 1914. British Blattidae. Ent. Rec. and Journ. Var., vol. 26, p. 185. 1955. The natural history of tse-tse flies. London School Hyg. Trop. Med., Mem. No. 10, 816 pp. CALLAN, E. MCC. 1942. A note on _Timulla_ (_Timulla_) _eriphyla_ Mickel (Hym., Mutillidae), a parasite of _Tachysphex blatticidus_ F. X. Williams (Hym., Larridae), from Trinidad, B. W. I. Proc. Roy. Ent. Soc. London, ser. A, vol. 17, p. 18. 1950. Observations on tropical wasps in Trinidad. Proc. 8th Internat. Congr. Ent., Stockholm, 1948, pp. 204-206. CALVERT, AMELIA S., and CALVERT, P. P. 1917. A year of Costa Rican natural history. 577 pp. New York. CALVERT, P. P. 1910. Zoological researches in Costa Rica. Old Penn Weekly Rev., Univ. Pennsylvania, vol. 9, pp. 165-170. CAMERANO, L. 1893. Sur quelques gordiens nouveaux ou peu connus. Bull. Soc. Zool. France, vol. 18, pp. 213-216. 1897. Monografia dei Gordii. Mem. Reale Accad. Sci., Torino, ser. 2, vol. 47, pp. 339-419. CAMERON, EWEN.