Through the kindness of Mr. Rollin H. Baker, Field Biologist for the Texas State Game, Fish, and Oyster Commission, a series of eight armadillos from eastern Texas was provided for helminthological examination. Although the armadillo is almost exclusively insectivorous, and remains of insects of many different kinds were found in the contents of the stomach and intestine, it is remarkable that not a single adult helminth was Tound that is believed to require an arthiropod as an intermediate host. Actually, only two adult helminths were encountered; (1) a fluke, Brachylaemus virginianus, previously recorded in nature only from opossums, which reaches its infective stage in snails (Polygyra and others), and (2) an oxyurid, Aspidodera fasciata, which presumably requires no intermediate host. This dearth of adult helminths requiring arthropod intermediate hosts is in striking contrast to the condition in other mammals living in the same general environment, e.g., opossums and raccoons. According to the host records of the Zoological Division of the U. S. Bureau of Animal Industry, this situation is general for the DASYPODIDAE. The only adult worms presumably requiring ingested arthropod intermediate hosts reported from armadillos are the anoplocephalid tapeworm, Oochoristica surinarmensis, and the acanthocephalan, Travassosia carinii. Stiles and Hassall (1894) report an "Echinorhynchus sp." from Dasypus novemcinctus, collected by Hassall in Texas, and in the collection of the Bureau of Animal Industry. Dr. E. W. Price, in correspondence, reported to the writer that he could find no record of this collection in the catalogue of the Helminthological Society, so it is now uncertain whether this record refers to larval forms of Oncicola, or to an adult worm in the intestine. On the other hand, three worms which presumably require arthropod intermediate hosts-the spiruroid nematodes, Physocephalus and Ascarops, and an acanthocephalan, Oncicola canis-were found as encysted larvae in the mesenteries or cecal walls. The spiruroids are normally parasitic in pigs and reach the infective stage in dung beetles, and Oncicola is normally parasitic in dogs and coyotes, and presumably reaches the infective stage in some arthropod. In this connection it is interesting to note that Cameron (1939) reported finding larval specimens of another spiruroid, Physaloptera sp., in an armadillo in Trinidad. Still another parasite, Porocephalus crotali, has been reported as encysted larvae in armadillos in Brazil. Armadillos in which large numbers of the encysted larvae of spiruroids were found were captured in areas where pigs were allowed to roam. Since it is unlikely that the armadillos are often killed and eaten by pigs, and since many of the encysted worms were dead and often undergoing calcification, it must be concluded that in hog pastures armadillos have a protective effect by picking up infected arthropod hosts and thus sidetracking the larvae that might otherwise eventually be eaten by the pigs.