CESTODE INFECTION IN CHICKENS 237 



than curative measures. Droppings should be cared for and treated 

 with appropriate substances in order to prevent insects from feed- 

 ing on them or developing in them. Experiments by giving lye 

 with food to infested chickens showed satisfactory results in re- 

 moving tapeworms, 



5. The flocks of chickens that were studied showed at times a 

 very heavy infection and nearly every bird examined harbored one 

 or more species of worms. Five species were found in the chickens 

 at Hardy, Nebraska, and three in the birds at the poultry farm at 

 the University of Illinois. The species found in Nebraska are 

 Davainea cesticillus (Molin), Davainea tetragona (Molin), Davainea 

 echinohothrida (Megnin), Hymenolepis carioca (Magalhaes), and 

 Choanotaejiia infundibuliformis (Goeze). At the poultry farm of 

 the University the species Davainea cesticillus (Molin), Davainea 

 echinohothrida (Megnin) and Hymenolepis carioca (Magalhaes) 

 were found. 



6. A full description of the structure of these parasites has 

 been published in the Transactions of The American Microscopical 

 Society, Vol. 35, p. 23-44, PI. 5-8. 



BIBLIOGEAPHY 



Grassi, B. B. and Eovelli, G. 1889. Embryologische Forschungen an Ces- 

 toden. Centralhl. f. BaM. und Parasitenl:, 5:370-377, 401-410. 

 1892. Kicerche embriologiche sui Cestodi. Atti Accad. Gioenia di Set. 

 Nat. in Catania, 4:1-108. 

 PiANA, G. P. 1882. Di una nuova specie di Tenia del gallo domestico (Taenia 

 bothrioplitis) e di un nuova cisticerco delle luniachelle terrestri (Cysti- 

 cercus bothrioplitis). Mem. Accad. Set. Inst. Bologna, 2:387-394. 

 Eansom, B. H. 1900. A new Avian Cestode— Metroliasthes lucida. Trans. 

 Amer. Micr. Soc, 21:213-226. 



1902. On Hymenolepis carioca (Magalhaes) and H. megalops (Nitzsch) 

 with Remarks on the Classification of the Group. Trans. Amer. Micr. 

 Soc., 23: 151-172. 

 1904. The Tapeworms of American Chickens and Turkeys. Bur. An. Ind. 



Ann. Bpt., 21 : 268-285. 



1909. The Taenoid Cestodes of North American Birds. Bull. U. S. Nat 



Mus., 69: 1-141. 



EossETER, T. B. 1891. Sur un Cysticercoide des Ostracodes, capable de se de- 



velopper dans I'intestin du Canard. Bull. Soc. Zool, France, 16: 224-229. 



1892. On a New Cysticercus and a New Tapeworm. Journ. Queckett 



Micr. Club, 4 : 361-366.. 

 1897. On Experimental Infection of Ducks with Cysticercus coronula 

 Mrazek (Rosseter), Cysticercus gracilis (von Linstow), Cysticercus tenui- 

 rostris (Hamann). Journ. Queekett Micr. Club, 6: 397-405. 

 Schmidt, J. E. 1894. Die Entwicklungsgeschiehte und der anatomische Bau 



der' Taenia anatina (Krabbe). Areh. f. Naturg., 1894, 1: 65-112. 

 Stiles, C. W. 1896. Report upon the Present Knowledge of the Tapeworms 



of Poultry. Bur. An. Ind. Bull. No. 12; 78 pp. 

 Tower, W. L. 1900. The Nervous System of the Cestode Monezia Expansa. 



Zool. Jahrb., 13 : 359-384. 

 ZtJRN, F. A. 1882, Die Krankheiteu des Hausgefliigels. 237 pp., 76 figs. 

 Weimar. 



